diff --git a/.gitignore b/.gitignore
index 1c8cdd1..7bd1000 100644
--- a/.gitignore
+++ b/.gitignore
@@ -40,3 +40,6 @@ jspm_packages
 yarn.lock
 package-lock.json
 npm-shrinkwrap.json
+
+
+out.html
diff --git a/README.md b/README.md
index 24cafe4..f32bf3c 100644
--- a/README.md
+++ b/README.md
@@ -1,19 +1,169 @@
 Intl.NumberFormat Unified API Proposal
 ======================================
 
-## Motivation
+This proposal adds **measurement units**, **compact decimal notation**, and other localized number formatting features to Intl.NumberFormat.
 
-There are many requests for adding number-formatting-related features to ECMA 402.  A few of them include:
+[TC39 Stage 2 Proposal](https://docs.google.com/presentation/d/1_1D15PWniTlbLu1BOU9aDf5H87Ecq85i0CuLl5KA4DE/edit?usp=sharing)
 
-- tc39/ecma402#200
-- tc39/ecma402#186
-- tc39/ecma402#164
-- tc39/ecma402#163
-- tc39/ecma402#95
-- tc39/ecma402#91
-- tc39/ecma402#37
-- tc39/ecma402#32
+[TC39 Stage 3 Proposal](https://docs.google.com/presentation/d/1BljVP4ENAqJt3CLXKapq_39Gr5RG6f1h9SQ_tsP7V8Y/edit?usp=sharing)
 
-Rather than complicate `Intl` with more subclasses with heavilly overlapping functionality, this proposal is to restructure the spec of `Intl.NumberFormat` to make it more easilly support additional features in a "unified" way.
+[View Spec](https://tc39.github.io/proposal-unified-intl-numberformat/)
+
+## Background / Motivation
+
+There are many requests for adding number-formatting-related features to ECMA-402 (the JavaScript Intl standard library). These include:
+
+- [Expose narrow currency symbol](https://github.com/tc39/ecma402/issues/200) -- Section I
+- [Clarification on behavior of SetNumberFormatDigitOptions](https://github.com/tc39/ecma402/issues/244) -- Section I
+- [Add measure unit formatting](https://github.com/tc39/ecma402/issues/32) -- Section II
+- [Add compact decimal notation](https://github.com/tc39/ecma402/issues/37) -- Section III
+- [Add scientific notation](https://github.com/tc39/ecma402/issues/164) -- Section III
+- [Add currency accounting format](https://github.com/tc39/ecma402/issues/186) -- Section IV
+- [Add option to force sign](https://github.com/tc39/ecma402/issues/163) -- Section IV
+
+These features are important to both end users and to Google.  Since most of these features require carrying along large amounts of locale data for proper i18n support, exposing these features via a JavaScript API reduces bandwidth and lowers the barrier to entry for i18n best practices.
+
+Rather than complicate `Intl` with more constructors with heavilly overlapping functionality, this proposal is to restructure the spec of `Intl.NumberFormat` to make it more easilly support additional features in a "unified" way.
+
+Additional background: [prior discussion](https://github.com/tc39/ecma402/issues/215)
+
+## I. Units
+
+Units of measurement can be formatted as follows:
+
+```javascript
+(299792458).toLocaleString("en-US", {
+    style: "unit",
+    unit: "meter-per-second",
+    unitDisplay: "short"
+});
+// ==> "299,792,458 m/s"
+```
+
+The syntax was discussed in #3.
+
+- `style` receives the string value "unit"
+- `unit` receives a string core unit identifier, defined in [UTS #35, Part 2, Section 6](http://unicode.org/reports/tr35/tr35-general.html#Unit_Elements).  See also the [full list of unit identifiers](https://github.com/unicode-org/cldr/blob/master/common/validity/unit.xml).
+- `unitDisplay`, named after the corresponding setting for currencies, `currencyDisplay`, takes either "narrow", "short", or "long".
+
+## II. Scientific and Compact Notation
+
+Scientific and compact notation are represented by the new option `notation` and can be formatted as follows:
+
+```javascript
+(987654321).toLocaleString("en-US", {
+    notation: "scientific"
+});
+// ==> 9.877E8
+
+(987654321).toLocaleString("en-US", {
+    notation: "engineering"
+});
+// ==> 987.7E6
+
+(987654321).toLocaleString("en-US", {
+    notation: "compact",
+    compactDisplay: "long"
+});
+// ==> 987.7 million
+```
+
+The syntax was discussed in #5.
+
+- `notation` takes either "scientific", "engineering", "compact", or "plain"
+- `compactDisplay`, used only when `notation` is "compact", takes either "short" or "long"
+
+Rounding-related settings (min/max integer/fraction digits) are applied after the number is scaled according to the chosen notation.
+
+When `notation` is "compact" and there are no user-specified rounding options, a special compact notation rounding strategy is used: round to the nearest integer, but always keep 2 significant digits.  For example, 123.4K rounds to 123K, and 1.234K rounds to 1.2K.  The user can determine that the compact rounding strategy is being used in the *resolvedOptions* if `notation` is "compact" *and* none of the rounding settings are present.
+
+Notation styles are allowed to be combined with other options:
+
+```javascript
+(299792458).toLocaleString("en-US", {
+    notation: "scientific",
+    minimumFractionDigits: 2,
+    maximumFractionDigits: 2,
+    style: "unit",
+    unit: "meter-per-second"
+});
+// ==> 3.00E8 m/s
+```
+
+## III. Sign Display
+
+The sign can be displayed on positive numbers:
+
+```javascript
+(55).toLocaleString("en-US", {
+    signDisplay: "always"
+});
+// ==> +55
+```
+
+Currency accounting sign display is also supported via a new option. In many locales, accounting format means to wrap the number with parentheses instead of
+appending a minus sign.  For example:
+
+```javascript
+(-100).toLocaleString("bn", {
+    style: "currency",
+    currency: "EUR",
+    currencySign: "accounting"
+});
+// ==> (১০০.০০€)
+```
+
+The syntax was discussed in #6:
+
+- `signDisplay`: "auto" (default), "always", "never", "exceptZero"
+  - See examples below.
+- `currencySign`: "standard" (default), "accounting"
+  - "accounting" enables the accounting format on currency values, as shown in the example above.  "standard", the default value, disables accounting formats.
+
+Examples of signDisplay choices with Latin digits:
+
+signDisplay | -1  | -0  | 0   | 1
+----------- | --- | --- | --- | ---
+auto        | -1  | -0  | 0   | 1
+always      | -1  | -0  | +0  | +1
+never       | 1   | 0   | 0   | 1
+exceptZero  | -1  | -0  | 0   | +1
+
+Examples of signDisplay choices with Latin digits when `currencySign` is "accounting":
+
+signDisplay | -1     | -0     | 0      | 1
+----------- | ------ | ------ | ------ | ------
+auto        | ($1.00) | ($0.00) | $0.00   | $1.00
+always      | ($1.00) | ($0.00) | +$0.00  | +$1.00
+never       | $1.00   | $0.00   | $0.00   | $1.00
+exceptZero  | ($1.00) | ($0.00) | $0.00   | +$1.00
+
+As usual, this may be combined with other options.
+
+```javascript
+(0.55).toLocaleString("en-US", {
+    style: "percent",
+    signDisplay: "exceptZero"
+});
+// ==> +55%
+```
+
+## IV. Spec Cleanup
+
+Certain sections of the spec have been refactored with the following objectives:
+
+- Fix https://github.com/tc39/ecma402/issues/238 (currency long name has dependency on plural form, and the currency long name pattern has dependency on currencyWidth).
+- Move pattern resolution out of the constructor to keep all internal fields of NumberFormat locale-agnostic, making it easier to reason about behavior in the format method.
+- Fix https://github.com/tc39/proposal-unified-intl-numberformat/issues/2, to allow minimumIntegerDigits to control integer digit count when significant digits are used.
+
+In addition, one missing option is added to the existing `currencyDisplay` setting: "narrowSymbol", which uses the CLDR narrow-format symbol:
+
+```javascript
+(100).toLocaleString("en-CA", {
+    style: "currency",
+    currency: "USD",
+    currencyDisplay: "narrowSymbol"
+});
+// ==> "$100" (rather than "US$100")
+```
 
-Background: tc39/ecma402#215
diff --git a/index.html b/index.html
index ed4de39..7388218 100644
--- a/index.html
+++ b/index.html
@@ -1,1822 +1,21 @@
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-<link rel="stylesheet" href="./spec.css">
-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/styles/github.min.css">
-<script src="./spec.js"></script>
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-  
-  this.loadBiblio();
-  
-  document.addEventListener('keydown', this.documentKeydown.bind(this));
-  
-  this.$searchBox.addEventListener('keydown', debounce(this.searchBoxKeydown.bind(this), { stopPropagation: true }));
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-Search.prototype.loadBiblio = function () {
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-    this.menu.show();
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-
-  this.$searchBox.focus();
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-  
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-
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-
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-  }
-  
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-}
-Search.prototype.hideSearch = function () {
-  this.$search.classList.remove('active');
-}
-
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-}
-
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-  var $first = this.$searchResults.querySelector('li:first-child a');
-
-  if ($first) {
-    document.location = $first.getAttribute('href');
-  }
-  
-  this.$searchBox.value = '';
-  this.$searchBox.blur();
-  this.displayResults([]);
-  this.hideSearch();
-
-  if (this._closeAfterSearch) {
-    this.menu.hide();
-  }
-}
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-
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-
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-  } else {
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-
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-function Menu() {
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-  
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-
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-Menu.prototype.isVisible = function() {
-  return this.$menu.classList.contains('active');
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-  this.$pins.classList.add('active');
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-  this.$pins.classList.remove('active');
-}
-
-Menu.prototype.addPinEntry = function (id) {
-  var entry = this.search.biblio.byId[id];
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-    // id was deleted after pin (or something) so remove it
-    delete this._pinnedIds[id];
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-  opts = opts || {};
-  var timeout;
-  return function(e) {
-    if (opts.stopPropagation) {
-      e.stopPropagation();
-    }
-    var args = arguments;
-    if (timeout) {
-      clearTimeout(timeout);
-    }
-    timeout = setTimeout(function() {
-      timeout = null;
-      fn.apply(this, args);
-    }.bind(this), 150);
-  }
-}
-
-var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
-function findLocalReferences ($elem) {
-  var name = $elem.innerHTML;
-  var references = [];
-
-  var parentClause = $elem.parentNode;
-  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
-    parentClause = parentClause.parentNode;
-  }
-
-  if(!parentClause) return;
-
-  var vars = parentClause.querySelectorAll('var');
-
-  for (var i = 0; i < vars.length; i++) {
-    var $var = vars[i];
-
-    if ($var.innerHTML === name) {
-      references.push($var);
-    }
-  }
-
-  return references;
-}
-
-function toggleFindLocalReferences($elem) {
-  var references = findLocalReferences($elem);
-  if ($elem.classList.contains('referenced')) {
-    references.forEach(function ($reference) {
-      $reference.classList.remove('referenced');
-    });
-  } else {
-    references.forEach(function ($reference) {
-      $reference.classList.add('referenced');
-    });
-  }
-}
-
-function installFindLocalReferences () {
-  document.addEventListener('click', function (e) {
-    if (e.target.nodeName === 'VAR') {
-      toggleFindLocalReferences(e.target);
-    }
-  });
-}
-
-document.addEventListener('DOMContentLoaded', installFindLocalReferences);
-
-
-
-
-// The following license applies to the fuzzysearch function
-// The MIT License (MIT)
-// Copyright © 2015 Nicolas Bevacqua
-// Copyright © 2016 Brian Terlson
-// Permission is hereby granted, free of charge, to any person obtaining a copy of
-// this software and associated documentation files (the "Software"), to deal in
-// the Software without restriction, including without limitation the rights to
-// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-// the Software, and to permit persons to whom the Software is furnished to do so,
-// subject to the following conditions:
-
-// The above copyright notice and this permission notice shall be included in all
-// copies or substantial portions of the Software.
-
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-function fuzzysearch (searchString, haystack, caseInsensitive) {
-  var tlen = haystack.length;
-  var qlen = searchString.length;
-  var chunks = 1;
-  var finding = false;
-  var prefix = true;
-  
-  if (qlen > tlen) {
-    return false;
-  }
-  
-  if (qlen === tlen) {
-    if (searchString === haystack) {
-      return { caseMatch: true, chunks: 1, prefix: true };
-    } else if (searchString.toLowerCase() === haystack.toLowerCase()) {
-      return { caseMatch: false, chunks: 1, prefix: true };
-    } else {
-      return false;
-    }
-  }
-  
-  outer: for (var i = 0, j = 0; i < qlen; i++) {
-    var nch = searchString[i];
-    while (j < tlen) {
-      var targetChar = haystack[j++];
-      if (targetChar === nch) {
-        finding = true;
-        continue outer;
-      }
-      if (finding) {
-        chunks++;
-        finding = false;
-      }
-    }
-    
-    if (caseInsensitive) { return false }
-    
-    return fuzzysearch(searchString.toLowerCase(), haystack.toLowerCase(), true);
-  }
-  
-  return { caseMatch: !caseInsensitive, chunks: chunks, prefix: j <= qlen };
-}
-
-var Toolbox = {
-  init: function () {
-    this.$container = document.createElement('div');
-    this.$container.classList.add('toolbox');
-    this.$permalink = document.createElement('a');
-    this.$permalink.textContent = 'Permalink';
-    this.$pinLink = document.createElement('a');
-    this.$pinLink.textContent = 'Pin';
-    this.$pinLink.setAttribute('href', '#');
-    this.$pinLink.addEventListener('click', function (e) {
-      e.preventDefault();
-      e.stopPropagation();
-      menu.togglePinEntry(this.entry.id);
-    }.bind(this));
-
-    this.$refsLink = document.createElement('a');
-    this.$refsLink.setAttribute('href', '#');
-    this.$refsLink.addEventListener('click', function (e) {
-      e.preventDefault();
-      e.stopPropagation();
-      referencePane.showReferencesFor(this.entry);
-    }.bind(this));
-    this.$container.appendChild(this.$permalink);
-    this.$container.appendChild(this.$pinLink);
-    this.$container.appendChild(this.$refsLink);
-    document.body.appendChild(this.$container);
-  },
-
-  activate: function (el, entry, target) {
-    if (el === this._activeEl) return;
-    this.active = true;
-    this.entry = entry;
-    this.$container.classList.add('active');
-    this.top = el.offsetTop - this.$container.offsetHeight - 10;
-    this.left = el.offsetLeft;
-    this.$container.setAttribute('style', 'left: ' + this.left + 'px; top: ' + this.top + 'px');
-    this.updatePermalink();
-    this.updateReferences();
-    this._activeEl = el;
-    if (this.top < document.body.scrollTop && el === target) {
-      // don't scroll unless it's a small thing (< 200px)
-      this.$container.scrollIntoView();
-    }
-  },
-
-  updatePermalink: function () {
-    this.$permalink.setAttribute('href', '#' + this.entry.id);
-  },
-
-  updateReferences: function () {
-    this.$refsLink.textContent = 'References (' + this.entry.referencingIds.length + ')';
-  },
-
-  activateIfMouseOver: function (e) {
-    var ref = this.findReferenceUnder(e.target);
-    if (ref && (!this.active || e.pageY > this._activeEl.offsetTop)) {
-      var entry = menu.search.biblio.byId[ref.id];
-      this.activate(ref.element, entry, e.target);
-    } else if (this.active && ((e.pageY < this.top) || e.pageY > (this._activeEl.offsetTop + this._activeEl.offsetHeight))) {
-      this.deactivate();
-    }
-  },
-
-  findReferenceUnder: function (el) {
-    while (el) {
-      var parent = el.parentNode;
-      if (el.nodeName === 'H1' && parent.nodeName.match(/EMU-CLAUSE|EMU-ANNEX|EMU-INTRO/) && parent.id) {
-        return { element: el, id: parent.id };
-      } else if (el.nodeName.match(/EMU-(?!CLAUSE|XREF|ANNEX|INTRO)|DFN/) &&
-                el.id && el.id[0] !== '_') {
-        if (el.nodeName === 'EMU-FIGURE' || el.nodeName === 'EMU-TABLE' || el.nodeName === 'EMU-EXAMPLE') {
-          // return the figcaption element
-          return { element: el.children[0].children[0], id: el.id };
-        } else if (el.nodeName === 'EMU-PRODUCTION') {
-          // return the LHS non-terminal element
-          return { element: el.children[0], id: el.id };
-        } else {
-          return { element: el, id: el.id };
-        }
-      }
-      el = parent;
-    }
-  },
-
-  deactivate: function () {
-    this.$container.classList.remove('active');
-    this._activeEl = null;
-    this.activeElBounds = null;
-    this.active = false;
-  }
-}
-
-var referencePane = {
-  init: function() {
-    this.$container = document.createElement('div');
-    this.$container.setAttribute('id', 'references-pane-container');
-
-    var $spacer = document.createElement('div');
-    $spacer.setAttribute('id', 'references-pane-spacer');
-
-    this.$pane = document.createElement('div');
-    this.$pane.setAttribute('id', 'references-pane');
-
-    this.$container.appendChild($spacer);
-    this.$container.appendChild(this.$pane);
-
-    this.$header = document.createElement('div');
-    this.$header.classList.add('menu-pane-header');
-    this.$header.textContent = 'References to ';
-    this.$headerRefId = document.createElement('a');
-    this.$header.appendChild(this.$headerRefId);
-    this.$closeButton = document.createElement('span');
-    this.$closeButton.setAttribute('id', 'references-pane-close');
-    this.$closeButton.addEventListener('click', function (e) {
-      this.deactivate();
-    }.bind(this));
-    this.$header.appendChild(this.$closeButton);
-
-    this.$pane.appendChild(this.$header);
-    var tableContainer = document.createElement('div');
-    tableContainer.setAttribute('id', 'references-pane-table-container');
-
-    this.$table = document.createElement('table');
-    this.$table.setAttribute('id', 'references-pane-table');
-
-    this.$tableBody = this.$table.createTBody();
-
-    tableContainer.appendChild(this.$table);
-    this.$pane.appendChild(tableContainer);
-
-    menu.$specContainer.appendChild(this.$container);
-  },
-
-  activate: function () {
-    this.$container.classList.add('active');
-  },
-
-  deactivate: function () {
-    this.$container.classList.remove('active');
-  },
-
-  showReferencesFor(entry) {
-    this.activate();
-    var newBody = document.createElement('tbody');
-    var previousId;
-    var previousCell;
-    var dupCount = 0;
-    this.$headerRefId.textContent = '#' + entry.id;
-    this.$headerRefId.setAttribute('href', '#' + entry.id);
-    entry.referencingIds.map(function (id) {
-      var target = document.getElementById(id);
-      var cid = findParentClauseId(target);
-      var clause = menu.search.biblio.byId[cid];
-      var dupCount = 0;
-      return { id: id, clause: clause }
-    }).sort(function (a, b) {
-      return sortByClauseNumber(a.clause, b.clause);
-    }).forEach(function (record, i) {
-      if (previousId === record.clause.id) {
-        previousCell.innerHTML += ' (<a href="#' + record.id + '">' + (dupCount + 2) + '</a>)';
-        dupCount++;
-      } else {
-        var row = newBody.insertRow();
-        var cell = row.insertCell();
-        cell.innerHTML = record.clause.number;
-        cell = row.insertCell();
-        cell.innerHTML = '<a href="#' + record.id + '">' + record.clause.titleHTML + '</a>';
-        previousCell = cell;
-        previousId = record.clause.id;
-        dupCount = 0;
-      }
-    }, this);
-    this.$table.removeChild(this.$tableBody);
-    this.$tableBody = newBody;
-    this.$table.appendChild(this.$tableBody);
-  }
-}
-function findParentClauseId(node) {
-  while (node && node.nodeName !== 'EMU-CLAUSE' && node.nodeName !== 'EMU-INTRO' && node.nodeName !== 'EMU-ANNEX') {
-    node = node.parentNode;
-  }
-  if (!node) return null;
-  return node.getAttribute('id');
-}
-
-function sortByClauseNumber(c1, c2) {
-  var c1c = c1.number.split('.');
-  var c2c = c2.number.split('.');
-
-  for (var i = 0; i < c1c.length; i++) {
-    if (i >= c2c.length) {
-      return 1;
-    }
-    
-    var c1 = c1c[i];
-    var c2 = c2c[i];
-    var c1cn = Number(c1);
-    var c2cn = Number(c2);
-
-    if (Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
-      if (c1 > c2) {
-        return 1;
-      } else if (c1 < c2) {
-        return -1;
-      }
-    } else if (!Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
-      return -1;
-    } else if (Number.isNaN(c1cn) && !Number.isNaN(c2cn)) {
-      return 1;
-    } else if(c1cn > c2cn) {
-      return 1;
-    } else if (c1cn < c2cn) {
-      return -1;
-    }
-  }
-
-  if (c1c.length === c2c.length) {
-    return 0;
-  }
-  return -1;
-}
-
-document.addEventListener('DOMContentLoaded', function () {
-  Toolbox.init();
-  referencePane.init();
-})
-var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
-function findLocalReferences ($elem) {
-  var name = $elem.innerHTML;
-  var references = [];
-
-  var parentClause = $elem.parentNode;
-  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
-    parentClause = parentClause.parentNode;
-  }
-
-  if(!parentClause) return;
-
-  var vars = parentClause.querySelectorAll('var');
-
-  for (var i = 0; i < vars.length; i++) {
-    var $var = vars[i];
-
-    if ($var.innerHTML === name) {
-      references.push($var);
-    }
-  }
-
-  return references;
-}
-
-function toggleFindLocalReferences($elem) {
-  var references = findLocalReferences($elem);
-  if ($elem.classList.contains('referenced')) {
-    references.forEach(function ($reference) {
-      $reference.classList.remove('referenced');
-    });
-  } else {
-    references.forEach(function ($reference) {
-      $reference.classList.add('referenced');
-    });
-  }
-}
-
-function installFindLocalReferences () {
-  document.addEventListener('click', function (e) {
-    if (e.target.nodeName === 'VAR') {
-      toggleFindLocalReferences(e.target);
-    }
-  });
-}
-
-document.addEventListener('DOMContentLoaded', installFindLocalReferences);
-</script><style>body {
-  display: flex;
-  font-size: 18px;
-  line-height: 1.5;
-  font-family: Cambria, Palatino Linotype, Palatino, Liberation Serif, serif;
-  padding: 0;
-  margin: 0;
-  color: #111;
-}
-
-#spec-container {
-  padding: 0 20px;
-  flex-grow: 1;
-  flex-basis: 66%;
-  box-sizing: border-box;
-  overflow: hidden;
-}
-
-body.oldtoc {
-  margin: 0 auto;
-}
-
-a {
-    text-decoration: none;
-    color: #206ca7;
-}
-
-a:visited {
-  color: #206ca7;
-}
-
-a:hover {
-    text-decoration: underline;
-    color: #239dee;
-}
-
-
-code {
-    font-weight: bold;
-    font-family: Consolas, Monaco, monospace;
-    white-space: pre;
-}
-
-pre code {
-  font-weight: inherit;
-}
-
-pre code.hljs {
-  background-color: #fff;
-  margin: 0;
-  padding: 0;
-}
-
-ol.toc {
-    list-style: none;
-    padding-left: 0;
-}
-
-ol.toc ol.toc {
-    padding-left: 2ex;
-    list-style: none;
-}
-
-var {
-  color: #2aa198;
-  transition: background-color 0.25s ease;
-  cursor: pointer;
-}
-
-var.referenced {
-  background-color: #ffff33;
-}
-
-emu-const {
-  font-family: sans-serif;
-}
-
-emu-val {
-  font-weight: bold;
-}
-emu-alg ol, emu-alg ol ol ol ol {
-    list-style-type: decimal;
-}
-
-emu-alg ol ol, emu-alg ol ol ol ol ol {
-    list-style-type: lower-alpha;
-}
-
-emu-alg ol ol ol, ol ol ol ol ol ol {
-    list-style-type: lower-roman;
-}
-
-emu-eqn {
-  display: block;
-  margin-left: 4em;
-}
-
-emu-eqn.inline {
-  display: inline;
-  margin: 0;
-}
-
-emu-eqn div:first-child {
-  margin-left: -2em;
-}
-
-emu-note {
-    margin: 1em 0;
-    color: #666;
-    border-left: 5px solid #ccc;
-    display: flex;
-    flex-direction: row;
-}
-
-emu-note > span.note {
-    flex-basis: 100px;
-    min-width: 100px;
-    flex-grow: 0;
-    flex-shrink: 1;
-    text-transform: uppercase;
-    padding-left: 5px;
-}
-
-emu-note[type=editor] {
-  border-left-color: #faa;
-}
-
-emu-note > div.note-contents {
-  flex-grow: 1;
-  flex-shrink: 1;
-}
-
-emu-note > div.note-contents > p:first-child {
-  margin-top: 0;
-}
-
-emu-note > div.note-contents > p:last-child {
-  margin-bottom: 0;
-}
-
-emu-figure {
-  display: block;
-}
-
-emu-example {
-  display: block;
-  margin: 1em 3em;
-}
-
-emu-example figure figcaption {
-  margin-top: 0.5em;
-  text-align: left;
-}
-
-emu-figure figure,
-emu-example figure,
-emu-table figure {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-}
-
-emu-production {
-    display: block;
-    margin-top: 1em;
-    margin-bottom: 1em;
-    margin-left: 5ex;
-}
-
-emu-grammar.inline, emu-production.inline,
-emu-grammar.inline emu-production emu-rhs, emu-production.inline emu-rhs,
-emu-grammar[collapsed] emu-production emu-rhs, emu-production[collapsed] emu-rhs {
-    display: inline;
-    padding-left: 1ex;
-    margin-left: 0;
-}
-
-emu-grammar[collapsed] emu-production, emu-production[collapsed] {
-    margin: 0;
-}
-
-emu-constraints {
-    font-size: .75em;
-    margin-right: 1ex;
-}
-
-emu-gann {
-    margin-right: 1ex;
-}
-
-emu-gann emu-t:last-child,
-emu-gann emu-nt:last-child {
-    margin-right: 0;
-}
-
-emu-geq {
-    margin-left: 1ex;
-    font-weight: bold;
-}
-
-emu-oneof {
-    font-weight: bold;
-    margin-left: 1ex;
-}
-
-emu-nt {
-    display: inline-block;
-    font-style: italic;
-    white-space: nowrap;
-    text-indent: 0;
-}
-
-emu-nt a, emu-nt a:visited {
-  color: #333;
-}
-
-emu-rhs emu-nt {
-    margin-right: 1ex;
-}
-
-emu-t {
-    display: inline-block;
-    font-family: monospace;
-    font-weight: bold;
-    white-space: nowrap;
-    text-indent: 0;
-}
-
-emu-production emu-t {
-    margin-right: 1ex;
-}
-
-emu-rhs {
-    display: block;
-    padding-left: 75px;
-    text-indent: -25px;
-}
-
-emu-mods {
-    font-size: .85em;
-    vertical-align: sub;
-    font-style: normal;
-    font-weight: normal;
-}
-
-emu-production[collapsed] emu-mods {
-  display: none;
-}
-
-emu-params, emu-opt {
-  margin-right: 1ex;
-  font-family: monospace;
-}
-
-emu-params, emu-constraints {
-  color: #2aa198;
-}
-
-emu-opt {
-  color: #b58900;
-}
-
-emu-gprose {
-    font-size: 0.9em;
-    font-family: Helvetica, Arial, sans-serif;
-}
-
-h1.shortname {
-  color: #f60;
-  font-size: 1.5em;
-  margin: 0;
-}
-
-h1.version {
-  color: #f60;
-  font-size: 1.5em;
-  margin: 0;
-}
-
-h1.title {
-  margin-top: 0;
-  color: #f60;
-}
-
-h1.first {
-  margin-top: 0;
-}
-
-h1, h2, h3, h4, h5, h6 {
-    position: relative;
-}
-
-h1 .secnum {
-  text-decoration: none;
-  margin-right: 10px;
-}
-
-h1 span.title {
-  order: 2;
-}
-
-
-h1 { font-size: 2.67em; margin-top: 2em; margin-bottom: 0; line-height: 1em;}
-h2 { font-size: 2em; }
-h3 { font-size: 1.56em; }
-h4 { font-size: 1.25em; }
-h5 { font-size: 1.11em; }
-h6 { font-size: 1em; }
-
-h1:hover span.utils {
-  display: block;
-}
-
-span.utils {
-  font-size: 18px;
-  line-height: 18px;
-  display: none;
-  position: absolute;
-  top: 100%;
-  left: 0;
-  right: 0;
-  font-weight: normal;
-}
-
-span.utils:before {
-    content: "⤷";
-    display: inline-block;
-    padding: 0 5px;
-}
-
-span.utils > * {
-  display: inline-block;
-  margin-right: 20px;
-}
-
-h1 span.utils span.anchor a,
-h2 span.utils span.anchor a,
-h3 span.utils span.anchor a,
-h4 span.utils span.anchor a,
-h5 span.utils span.anchor a,
-h6 span.utils span.anchor a {
-  text-decoration: none;
-  font-variant: small-caps;
-}
-
-h1 span.utils span.anchor a:hover,
-h2 span.utils span.anchor a:hover,
-h3 span.utils span.anchor a:hover,
-h4 span.utils span.anchor a:hover,
-h5 span.utils span.anchor a:hover,
-h6 span.utils span.anchor a:hover {
-  color: #333;
-}
-
-emu-intro h1, emu-clause h1, emu-annex h1 { font-size: 2em; }
-emu-intro h2, emu-clause h2, emu-annex h2 { font-size: 1.56em; }
-emu-intro h3, emu-clause h3, emu-annex h3 { font-size: 1.25em; }
-emu-intro h4, emu-clause h4, emu-annex h4 { font-size: 1.11em; }
-emu-intro h5, emu-clause h5, emu-annex h5 { font-size: 1em; }
-emu-intro h6, emu-clause h6, emu-annex h6 { font-size: 0.9em; }
-emu-intro emu-intro h1, emu-clause emu-clause h1, emu-annex emu-annex h1 { font-size: 1.56em; }
-emu-intro emu-intro h2, emu-clause emu-clause h2, emu-annex emu-annex h2 { font-size: 1.25em; }
-emu-intro emu-intro h3, emu-clause emu-clause h3, emu-annex emu-annex h3 { font-size: 1.11em; }
-emu-intro emu-intro h4, emu-clause emu-clause h4, emu-annex emu-annex h4 { font-size: 1em; }
-emu-intro emu-intro h5, emu-clause emu-clause h5, emu-annex emu-annex h5 { font-size: 0.9em; }
-emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex h1 { font-size: 1.25em; }
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-emu-intro emu-intro emu-intro h4, emu-clause emu-clause emu-clause h4, emu-annex emu-annex emu-annex h4 { font-size: 0.9em; }
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-emu-intro emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex emu-annex h3 { font-size: 0.9em; }
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-
-emu-clause, emu-intro, emu-annex {
-    display: block;
-}
-
-/* Figures and tables */
-figure { display: block; margin: 1em 0 3em 0; }
-figure object { display: block; margin: 0 auto; }
-figure table.real-table { margin: 0 auto; }
-figure figcaption {
-    display: block;
-    color: #555555;
-    font-weight: bold;
-    text-align: center;
-}
-
-emu-table table {
-  margin: 0 auto;
-}
-
-emu-table table, table.real-table {
-    border-collapse: collapse;
-}
-
-emu-table td, emu-table th, table.real-table td, table.real-table th {
-    border: 1px solid black;
-    padding: 0.4em;
-    vertical-align: baseline;
-}
-emu-table th, emu-table thead td, table.real-table th {
-    background-color: #eeeeee;
-}
-
-/* Note: the left content edges of table.lightweight-table >tbody >tr >td
-   and div.display line up. */
-table.lightweight-table {
-    border-collapse: collapse;
-    margin: 0 0 0 1.5em;
-}
-table.lightweight-table td, table.lightweight-table th {
-    border: none;
-    padding: 0 0.5em;
-    vertical-align: baseline;
-}
-
-/* diff styles */
-ins {
-    background-color: #e0f8e0;
-    text-decoration: none;
-    border-bottom: 1px solid #396;
-}
-
-del {
-    background-color: #fee;
-}
-
-ins.block, del.block,
-emu-production > ins, emu-production > del,
-emu-grammar > ins, emu-grammar > del {
-  display: block;
-}
-
-tr.ins > td > ins {
-  border-bottom: none;
-}
-
-tr.ins > td {
-  background-color: #e0f8e0;
-}
-
-tr.del > td {
-  background-color: #fee;
-}
-
-/* Menu Styles */
-#menu-toggle {
-  font-size: 2em;
-
-  position: fixed;
-  top: 0;
-  left: 0;
-  width: 1.5em;
-  height: 1.5em;
-  z-index: 3;
-  visibility: hidden;
-  color: #1567a2;
-  background-color: #fff;
-
-  line-height: 1.5em;
-  text-align: center;
-  -webkit-touch-callout: none;
-  -webkit-user-select: none;
-  -khtml-user-select: none;
-  -moz-user-select: none;
-  -ms-user-select: none;
-  user-select: none;;
-
-  cursor: pointer;
-}
-
-#menu {
-  display: flex;
-  flex-direction: column;
-  width: 33%; height: 100vh;
-  max-width: 500px;
-  box-sizing: border-box;
-  background-color: #ddd;
-  overflow: hidden;
-  transition: opacity 0.1s linear;
-  padding: 0 5px;
-  position: fixed;
-  left: 0; top: 0;
-  border-right: 2px solid #bbb;
-
-  z-index: 2;
-}
-
-#menu-spacer {
-  flex-basis: 33%;
-  max-width: 500px;
-  flex-grow: 0;
-  flex-shrink: 0;
-}
-
-#menu a {
-  color: #1567a2;
-}
-
-#menu.active {
-  display: flex;
-  opacity: 1;
-  z-index: 2;
-}
-
-#menu-pins {
-  flex-grow: 1;
-  display: none;
-}
-
-#menu-pins.active {
-  display: block;
-}
-
-#menu-pins-list {
-  margin: 0;
-  padding: 0;
-  counter-reset: pins-counter;
-}
-
-#menu-pins-list > li:before {
-  content: counter(pins-counter);
-  counter-increment: pins-counter;
-  display: inline-block;
-  width: 25px;
-  text-align: center;
-  border: 1px solid #bbb;
-  padding: 2px;
-  margin: 4px;
-  box-sizing: border-box;
-  line-height: 1em;
-  background-color: #ccc;
-  border-radius: 4px;
-}
-#menu-toc > ol {
-  padding: 0;
-  flex-grow: 1;
-}
-
-#menu-toc > ol li {
-  padding: 0;
-}
-
-#menu-toc > ol , #menu-toc > ol ol {
-  list-style-type: none;
-  margin: 0;
-  padding: 0;
-}
-
-#menu-toc > ol ol {
-  padding-left: 0.75em;
-}
-
-#menu-toc li {
-  text-overflow: ellipsis;
-  overflow: hidden;
-  white-space: nowrap;
-}
-
-#menu-toc .item-toggle {
-  display: inline-block;
-  transform: rotate(-45deg) translate(-5px, -5px);
-  transition: transform 0.1s ease;
-  text-align: center;
-  width: 20px;
-
-  color: #aab;
-
-  -webkit-touch-callout: none;
-  -webkit-user-select: none;
-  -khtml-user-select: none;
-  -moz-user-select: none;
-  -ms-user-select: none;
-  user-select: none;;
-
-  cursor: pointer;
-}
-
-#menu-toc .item-toggle-none {
-  display: inline-block;
-  width: 20px;
-}
-
-#menu-toc li.active > .item-toggle {
-  transform: rotate(45deg) translate(-5px, -5px);
-}
-
-#menu-toc li > ol {
-  display: none;
-}
-
-#menu-toc li.active > ol {
-  display: block;
-}
-
-#menu-toc li.revealed > a {
-  background-color: #bbb;
-  font-weight: bold;
-  /*
-  background-color: #222;
-  color: #c6d8e4;
-  */
-}
-
-#menu-toc li.revealed-leaf> a {
-  color: #206ca7;
-  /*
-  background-color: #222;
-  color: #c6d8e4;
-  */
-}
-
-#menu-toc li.revealed > .item-toggle {
-  transform: rotate(45deg) translate(-5px, -5px);
-}
-
-#menu-toc li.revealed > ol {
-  display: block;
-}
-
-#menu-toc li > a {
-  padding: 2px 5px;
-}
-
-#menu > * {
-  margin-bottom: 5px;
-}
-
-.menu-pane-header {
-  padding: 0 5px;
-  text-transform: uppercase;
-  background-color: #aaa;
-  color: #335;
-  font-weight: bold;
-  letter-spacing: 2px;
-  flex-grow: 0;
-  flex-shrink: 0;
-  font-size: 0.8em;
-}
-
-#menu-toc {
-  display: flex;
-  flex-direction: column;
-  width: 100%;
-  overflow: hidden;
-  flex-grow: 1;
-}
-
-#menu-toc ol.toc {
-  overflow-x: hidden;
-  overflow-y: auto;
-}
-
-#menu-search {
-  position: relative;
-  flex-grow: 0;
-  flex-shrink: 0;
-  width: 100%;
-  
-  display: flex;
-  flex-direction: column;
-  
-  max-height: 300px;
-}
-
-#menu-trace-list {
-  display: none;
-}
-
-#menu-search-box {
-  box-sizing: border-box;
-  display: block;
-  width: 100%;
-  margin: 5px 0 0 0;
-  font-size: 1em;
-  padding: 2px;
-  background-color: #bbb;
-  border: 1px solid #999;
-}
-
-#menu-search-results {
-  overflow-x: hidden;
-  overflow-y: auto;
-}
-
-li.menu-search-result-clause:before {
-    content: 'clause';
-    width: 40px;
-    display: inline-block;
-    text-align: right;
-    padding-right: 1ex;
-    color: #666;
-    font-size: 75%;
-}
-li.menu-search-result-op:before {
-    content: 'op';
-    width: 40px;
-    display: inline-block;
-    text-align: right;
-    padding-right: 1ex;
-    color: #666;
-    font-size: 75%;
-}
-
-li.menu-search-result-prod:before {
-    content: 'prod';
-    width: 40px;
-    display: inline-block;
-    text-align: right;
-    padding-right: 1ex;
-    color: #666;
-    font-size: 75%
-}
-
-
-li.menu-search-result-term:before {
-    content: 'term';
-    width: 40px;
-    display: inline-block;
-    text-align: right;
-    padding-right: 1ex;
-    color: #666;
-    font-size: 75%
-}
-
-#menu-search-results ul {
-  padding: 0 5px;
-  margin: 0;
-}
-
-#menu-search-results li {
-  white-space: nowrap;
-  text-overflow: ellipsis;
-}
-
-
-#menu-trace-list {
-  counter-reset: item;
-  margin: 0 0 0 20px;
-  padding: 0;
-}
-#menu-trace-list li {
-  display: block;
-  white-space: nowrap;
-}
-
-#menu-trace-list li .secnum:after {
-  content: " ";
-}
-#menu-trace-list li:before {
-    content: counter(item) " ";
-    background-color: #222;
-    counter-increment: item;
-    color: #999;
-    width: 20px;
-    height: 20px;
-    line-height: 20px;
-    display: inline-block;
-    text-align: center;
-    margin: 2px 4px 2px 0;
-}
-
-@media (max-width: 1000px) {
-  body {
-    margin: 0;
-    display: block;
-  }
-
-  #menu {
-    display: none;
-    padding-top: 3em;
-    width: 450px;
-  }
-
-  #menu.active {
-    position: fixed;
-    height: 100%;
-    left: 0;
-    top: 0;
-    right: 300px;
-  }
-
-  #menu-toggle {
-    visibility: visible;
-  }
-
-  #spec-container {
-    padding: 0 5px;
-  }
-
-  #references-pane-spacer {
-    display: none;
-  }
-}
-
-@media only screen and (max-width: 800px) {
-  #menu {
-    width: 100%;
-  }
-
-  h1 .secnum:empty {
-    margin: 0; padding: 0;
-  }
-}
-
-
-/* Toolbox */
-.toolbox {
-	position: absolute;
-	background: #ddd;
-	border: 1px solid #aaa;
-  display: none;
-  color: #eee;
-  padding: 5px;
-  border-radius: 3px;
-}
-
-.toolbox.active {
-  display: inline-block;
-}
-
-.toolbox a {
-  text-decoration: none;
-  padding: 0 5px;
-}
-
-.toolbox a:hover {
-  text-decoration: underline;
-}
-
-.toolbox:after, .toolbox:before {
-	top: 100%;
-	left: 15px;
-	border: solid transparent;
-	content: " ";
-	height: 0;
-	width: 0;
-	position: absolute;
-	pointer-events: none;
-}
-
-.toolbox:after {
-	border-color: rgba(0, 0, 0, 0);
-	border-top-color: #ddd;
-	border-width: 10px;
-	margin-left: -10px;
-}
-.toolbox:before {
-	border-color: rgba(204, 204, 204, 0);
-	border-top-color: #aaa;
-	border-width: 12px;
-	margin-left: -12px;
-}
-
-#references-pane-container {
-  position: fixed;
-  bottom: 0;
-  left: 0;
-  right: 0;
-  height: 250px;
-  display: none;
-  background-color: #ddd;
-  z-index: 1;
-}
-
-#references-pane-table-container {
-  overflow-x: hidden;
-  overflow-y: auto;
-}
-
-#references-pane-spacer {
-  flex-basis: 33%;
-  max-width: 500px;
-}
-
-#references-pane {
-  flex-grow: 1;
-  overflow: hidden;
-  display: flex;
-  flex-direction: column;
-}
-
-#references-pane-container.active {
-  display: flex;
-}
-
-#references-pane-close:after {
-  content: '✖';
-  float: right;
-  cursor: pointer;
-}
-
-#references-pane table tr td:first-child {
-  text-align: right;
-  padding-right: 5px;
-}
-</style></head><body><div id="menu-toggle">☰</div><div id="menu-spacer"></div><div id="menu"><div id="menu-search"><input type="text" id="menu-search-box" placeholder="Search..."><div id="menu-search-results" class="inactive"></div></div><div id="menu-pins"><div class="menu-pane-header">Pins</div><ul id="menu-pins-list"></ul></div><div class="menu-pane-header">Table of Contents</div><div id="menu-toc"><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-demo-clause" title="This is an emu-clause"><span class="secnum">1</span> This is an emu-clause</a></li><li><span class="item-toggle-none"></span><a href="#sec-copyright-and-software-license" title="Copyright &amp; Software License"><span class="secnum">A</span> Copyright &amp; Software License</a></li></ol></div></div><div id="spec-container"><h1 class="version first">Stage -1 Draft / September 25, 2017</h1><h1 class="title">Proposal Title Goes Here</h1>
-
-<emu-clause id="sec-demo-clause">
-  <h1><span class="secnum">1</span>This is an emu-clause</h1>
-  <p>This is an algorithm:</p>
-  <emu-alg><ol><li>Let <var>proposal</var> be <emu-val>undefined</emu-val>.</li><li>If IsAccepted(<var>proposal</var>),<ol><li>Let <var>stage</var> be <emu-val>0</emu-val>.</li></ol></li><li>Else,<ol><li>Let <var>stage</var> be <emu-val>-1</emu-val>.</li></ol></li><li>Return ?&nbsp;<emu-xref aoid="ToString" id="_ref_0"><a href="https://tc39.github.io/ecma262/#sec-tostring">ToString</a></emu-xref>(<var>proposal</var>).
-  </li></ol></emu-alg>
-</emu-clause><emu-annex id="sec-copyright-and-software-license">
-      <h1><span class="secnum">A</span>Copyright &amp; Software License</h1>
-      
-      <h2>Copyright Notice</h2>
-      <p>© 2017 Your Name Goes Here</p>
-
-      <h2>Software License</h2>
-      <p>All Software contained in this document ("Software") is protected by copyright and is being made available under the "BSD License", included below. This Software may be subject to third party rights (rights from parties other than Ecma International), including patent rights, and no licenses under such third party rights are granted under this license even if the third party concerned is a member of Ecma International. SEE THE ECMA CODE OF CONDUCT IN PATENT MATTERS AVAILABLE AT http://www.ecma-international.org/memento/codeofconduct.htm FOR INFORMATION REGARDING THE LICENSING OF PATENT CLAIMS THAT ARE REQUIRED TO IMPLEMENT ECMA INTERNATIONAL STANDARDS.</p>
-
-<p>Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:</p>
-
-<ol>
-  <li>Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.</li>
-  <li>Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.</li>
-  <li>Neither the name of the authors nor Ecma International may be used to endorse or promote products derived from this software without specific prior written permission.</li>
-</ol>
-
-<p>THIS SOFTWARE IS PROVIDED BY THE ECMA INTERNATIONAL "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ECMA INTERNATIONAL BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</p>
-
-    </emu-annex>
-</div></body>
\ No newline at end of file
+<head>
+<meta charset="utf-8"/>
+<title>Unified Intl.NumberFormat Feature Proposal</title>
+</head>
+
+<body>
+	<h1>Unified Intl.NumberFormat Feature Proposal</h1>
+	<p>For more information on this proposal, see <a href="https://github.com/sffc/proposal-unified-intl-numberformat">GitHub</a>.</p>
+	<h2>Spec Text</h2>
+	<h3>Section 6 (Identification of Locales, Currencies, and Time Zones)</h3>
+	<ul>
+		<li><a href="section6/locales-currencies-tz_proposed_out.html">Proposed</a></li>
+		<li><a href="section6/locales-currencies-tz_diff_out.html">Diff</a></li>
+	</ul>
+	<h3>Section 11 (NumberFormat Objects)</h3>
+	<ul>
+		<li><a href="section11/numberformat_proposed_out.html">Proposed</a></li>
+		<li><a href="section11/numberformat_diff_out.html">Diff</a></li>
+	</ul>
+</body>
diff --git a/package.json b/package.json
index a454e1c..b19d7a0 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,11 @@
   "name": "template-for-proposals",
   "description": "A repository template for ECMAScript proposals.",
   "scripts": {
-    "build": "ecmarkup spec.emu > index.html"
+    "build:sec6": "ecmarkup section6/locales-currencies-tz_proposed.html section6/locales-currencies-tz_proposed_out.html",
+    "build:sec6-diff": "ecmarkup section6/locales-currencies-tz_diff.html section6/locales-currencies-tz_diff_out.html",
+    "build:sec11": "ecmarkup section11/numberformat_proposed.html section11/numberformat_proposed_out.html",
+    "build:sec11-diff": "ecmarkup section11/numberformat_diff.html section11/numberformat_diff_out.html",
+    "build": "npm run build:sec6 && npm run build:sec6-diff && npm run build:sec11 && npm run build:sec11-diff"
   },
   "homepage": "https://github.com/tc39/template-for-proposals#readme",
   "repository": {
diff --git a/numberformat_current.html b/section11/numberformat_current.html
similarity index 95%
rename from numberformat_current.html
rename to section11/numberformat_current.html
index 979c8f5..0e269cb 100644
--- a/numberformat_current.html
+++ b/section11/numberformat_current.html
@@ -14,22 +14,22 @@ <h1>SetNumberFormatDigitOptions ( _intlObj_, _options_, _mnfdDefault_, _mxfdDefa
       <emu-alg>
         1. Assert: Type(_intlObj_) is Object.
         1. Assert: Type(_options_) is Object.
-        1. Assert: type(_mnfdDefault_) is Number.
-        1. Assert: type(_mxfdDefault_) is Number.
-        1. Let _mnid_ be ? GetNumberOption(_options_, `"minimumIntegerDigits,"`, 1, 21, 1).
+        1. Assert: Type(_mnfdDefault_) is Number.
+        1. Assert: Type(_mxfdDefault_) is Number.
+        1. Let _mnid_ be ? GetNumberOption(_options_, `"minimumIntegerDigits"`, 1, 21, 1).
         1. Let _mnfd_ be ? GetNumberOption(_options_, `"minimumFractionDigits"`, 0, 20, _mnfdDefault_).
         1. Let _mxfdActualDefault_ be max( _mnfd_, _mxfdDefault_ ).
         1. Let _mxfd_ be ? GetNumberOption(_options_, `"maximumFractionDigits"`, _mnfd_, 20, _mxfdActualDefault_).
         1. Let _mnsd_ be ? Get(_options_, `"minimumSignificantDigits"`).
         1. Let _mxsd_ be ? Get(_options_, `"maximumSignificantDigits"`).
-        1. Set _intlObj_.[[MinimumIntegerDigits]] to mnid.
-        1. Set _intlObj_.[[MinimumFractionDigits]] to mnfd.
-        1. Set _intlObj_.[[MaximumFractionDigits]] to mxfd.
+        1. Set _intlObj_.[[MinimumIntegerDigits]] to _mnid_.
+        1. Set _intlObj_.[[MinimumFractionDigits]] to _mnfd_.
+        1. Set _intlObj_.[[MaximumFractionDigits]] to _mxfd_.
         1. If _mnsd_ is not *undefined* or _mxsd_ is not *undefined*, then
           1. Let _mnsd_ be ? DefaultNumberOption(_mnsd_, 1, 21, 1).
           1. Let _mxsd_ be ? DefaultNumberOption(_mxsd_, _mnsd_, 21, 21).
-          1. Set _intlObj_.[[MinimumSignificantDigits]] to mnsd.
-          1. Set _intlObj_.[[MaximumSignificantDigits]] to mxsd.
+          1. Set _intlObj_.[[MinimumSignificantDigits]] to _mnsd_.
+          1. Set _intlObj_.[[MaximumSignificantDigits]] to _mxsd_.
       </emu-alg>
     </emu-clause>
 
@@ -143,7 +143,7 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
       </p>
 
       <emu-alg>
-        1. If _x_ is not *NaN* and _x_ < 0, then
+        1. If _x_ is not *NaN* and _x_ &lt; 0 or _x_ is *-0*, then
           1. Let _x_ be -_x_.
           1. Let _pattern_ be _numberFormat_.[[NegativePattern]].
         1. Else,
@@ -160,9 +160,9 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
             1. Let _literal_ be a substring of _pattern_ from position _nextIndex_, inclusive, to position _beginIndex_, exclusive.
             1. Append a new Record { [[Type]]: `"literal"`, [[Value]]: _literal_ } as the last element of _result_.
           1. Let _p_ be the substring of _pattern_ from position _beginIndex_, exclusive, to position _endIndex_, exclusive.
-          1. If _p_ is equal `"number"`, then
+          1. If _p_ is equal to `"number"`, then
             1. If _x_ is *NaN*, then
-              1. Let _n_ be an ILD String value indicating the *NaN* value.
+              1. Let _n_ be an implementation- and locale-dependent (ILD) String value indicating the *NaN* value.
               1. Append a new Record { [[Type]]: `"nan"`, [[Value]]: _n_ } as the last element of _result_.
             1. Else if _x_ is not a finite Number,
               1. Let _n_ be an ILD String value indicating infinity.
@@ -182,7 +182,7 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
                 1. Let _integer_ be _n_.
                 1. Let _fraction_ be *undefined*.
               1. If the _numberFormat_.[[UseGrouping]] is *true*, then
-                1. Let _groupSepSymbol_ be the ILND String representing the grouping separator.
+                1. Let _groupSepSymbol_ be the implementation-, locale-, and numbering system-dependent (ILND) String representing the grouping separator.
                 1. Let _groups_ be a List whose elements are, in left to right order, the substrings defined by ILND set of locations within the _integer_.
                 1. Assert: The number of elements in _groups_ List is greater than 0.
                 1. Repeat, while _groups_ List is not empty
@@ -196,16 +196,16 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
                 1. Let _decimalSepSymbol_ be the ILND String representing the decimal separator.
                 1. Append a new Record { [[Type]]: `"decimal"`, [[Value]]: _decimalSepSymbol_ } as the last element of _result_.
                 1. Append a new Record { [[Type]]: `"fraction"`, [[Value]]: _fraction_ } as the last element of _result_.
-          1. Else if _p_ is equal `"plusSign"`, then
+          1. Else if _p_ is equal to `"plusSign"`, then
             1. Let _plusSignSymbol_ be the ILND String representing the plus sign.
             1. Append a new Record { [[Type]]: `"plusSign"`, [[Value]]: _plusSignSymbol_ } as the last element of _result_.
-          1. Else if _p_ is equal `"minusSign"`, then
+          1. Else if _p_ is equal to `"minusSign"`, then
             1. Let _minusSignSymbol_ be the ILND String representing the minus sign.
             1. Append a new Record { [[Type]]: `"minusSign"`, [[Value]]: _minusSignSymbol_ } as the last element of _result_.
-          1. Else if _p_ is equal `"percentSign"` and _numberFormat_.[[Style]] is `"percent"`, then
+          1. Else if _p_ is equal to `"percentSign"` and _numberFormat_.[[Style]] is `"percent"`, then
             1. Let _percentSignSymbol_ be the ILND String representing the percent sign.
             1. Append a new Record { [[Type]]: `"percentSign"`, [[Value]]: _percentSignSymbol_ } as the last element of _result_.
-          1. Else if _p_ is equal `"currency"` and _numberFormat_.[[Style]] is `"currency"`, then
+          1. Else if _p_ is equal to `"currency"` and _numberFormat_.[[Style]] is `"currency"`, then
             1. Let _currency_ be _numberFormat_.[[Currency]].
             1. Assert: _numberFormat_.[[CurrencyDisplay]] is `"code"`, `"symbol"` or `"name"`.
             1. If _numberFormat_.[[CurrencyDisplay]] is `"code"`, then
@@ -216,8 +216,8 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
               1. Let _cd_ be an ILD string representing _currency_ in long form. If the implementation does not have such a representation of _currency_, use _currency_ itself.
             1. Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.
           1. Else,
-            1. Let _literal_ be the substring of _pattern_ from position _beginIndex_, inclusive, to position _endIndex_, inclusive.
-            1. Append a new Record { [[Type]]: `"literal"`, [[Value]]: _literal_ } as the last element of _result_.
+            1. Let _unknown_ be an ILND String based on _x_ and _p_.
+            1. Append a new Record { [[Type]]: `"unknown"`, [[Value]]: _unknown_ } as the last element of _result_.
           1. Set _nextIndex_ to _endIndex_ + 1.
           1. Set _beginIndex_ to Call(%StringProto_indexOf%, _pattern_, &laquo; `"{"`, _nextIndex_ &raquo;).
         1. If _nextIndex_ is less than _length_, then
@@ -608,6 +608,11 @@ <h1>get Intl.NumberFormat.prototype.format</h1>
           1. Set _nf_.[[BoundFormat]] to _F_.
         1. Return _nf_.[[BoundFormat]].
       </emu-alg>
+
+      <emu-note>
+        The returned function is bound to _nf_ so that it can be passed directly to `Array.prototype.map` or other functions.
+        This is considered a historical artefact, as part of a convention which is no longer followed for new features, but is preserved to maintain compatibility with existing programs.
+      </emu-note>
     </emu-clause>
 
     <emu-clause id="sec-intl.numberformat.prototype.formattoparts">
@@ -638,7 +643,7 @@ <h1>Intl.NumberFormat.prototype.resolvedOptions ()</h1>
         1. If Type(_nf_) is not Object, throw a *TypeError* exception.
         1. Let _nf_ be ? UnwrapNumberFormat(_nf_).
         1. Let _options_ be ! ObjectCreate(%ObjectPrototype%).
-        1. For each row of <emu-xref href="#table-numberformat-resolvedoptions-properties"></emu-xref>, except the header row, in any order, do
+        1. For each row of <emu-xref href="#table-numberformat-resolvedoptions-properties"></emu-xref>, except the header row, in table order, do
           1. Let _p_ be the Property value of the current row.
           1. Let _v_ be the value of _nf_'s internal slot whose name is the Internal Slot value of the current row.
           1. If _v_ is not *undefined*, then
diff --git a/section11/numberformat_diff.html b/section11/numberformat_diff.html
new file mode 100644
index 0000000..dd7c971
--- /dev/null
+++ b/section11/numberformat_diff.html
@@ -0,0 +1,1045 @@
+<emu-clause id="numberformat-objects">
+  <h1>NumberFormat Objects</h1>
+
+  <emu-clause id="sec-numberformat-abstracts">
+    <h1>Abstract Operations For NumberFormat Objects</h1>
+
+    <emu-clause id="sec-setnfdigitoptions" aoid="SetNumberFormatDigitOptions">
+      <h1>SetNumberFormatDigitOptions ( _intlObj_, _options_, _mnfdDefault_, _mxfdDefault_ )</h1>
+
+      <p>
+        The abstract operation SetNumberFormatDigitOptions applies digit
+        options used for number formatting onto the intl object.
+      </p>
+      <emu-alg>
+        1. Assert: Type(_intlObj_) is Object.
+        1. Assert: Type(_options_) is Object.
+        1. Assert: Type(_mnfdDefault_) is Number.
+        1. Assert: Type(_mxfdDefault_) is Number.
+        1. Let _mnid_ be ? GetNumberOption(_options_, `"minimumIntegerDigits"`, 1, 21, 1).
+        1. Let _mnfd_ be ? Get<del>NumberOption</del>(_options_, `"minimumFractionDigits"`<del>, 0, 20, _mnfdDefault_</del>).
+        1. <del class="block">Let _mxfdActualDefault_ be max( _mnfd_, _mxfdDefault_ ).</del>
+        1. Let _mxfd_ be ? Get<del>NumberOption</del>(_options_, `"maximumFractionDigits"`<del>, _mnfd_, 20, _mxfdActualDefault_</del>).
+        1. Let _mnsd_ be ? Get(_options_, `"minimumSignificantDigits"`).
+        1. Let _mxsd_ be ? Get(_options_, `"maximumSignificantDigits"`).
+        1. Set _intlObj_.[[MinimumIntegerDigits]] to _mnid_.
+        1. <del class="block">Set _intlObj_.[[MinimumFractionDigits]] to _mnfd_.</del>
+        1. <del class="block">Set _intlObj_.[[MaximumFractionDigits]] to _mxfd_.</del>
+        1. If _mnsd_ is not *undefined* or _mxsd_ is not *undefined*, then
+          1. <ins class="block">Set _intlObj_.[[RoundingType]] to `"significantDigits"`.</ins>
+          1. Let _mnsd_ be ? DefaultNumberOption(_mnsd_, 1, 21, 1).
+          1. Let _mxsd_ be ? DefaultNumberOption(_mxsd_, _mnsd_, 21, 21).
+          1. Set _intlObj_.[[MinimumSignificantDigits]] to _mnsd_.
+          1. Set _intlObj_.[[MaximumSignificantDigits]] to _mxsd_.
+        1. <ins class="block">Else If _mnfd_ is not *undefined* or _mxfd_ is not *undefined*, then</ins>
+          1. <ins class="block">Set _intlObj_.[[RoundingType]] to `"fractionDigits"`.</ins>
+          1. <ins class="block">Let _mnfd_ be ? DefaultNumberOption(_mnfd_, 0, 20, _mnfdDefault_).</ins>
+          1. <ins class="block">Let _mxfdActualDefault_ be max( _mnfd_, _mxfdDefault_ ).</ins>
+          1. <ins class="block">Let _mxfd_ be ? DefaultNumberOption(_mxfd_, _mnfd_, 20, _mxfdActualDefault_).</ins>
+          1. <ins class="block">Set _intlObj_.[[MinimumFractionDigits]] to _mnfd_.</ins>
+          1. <ins class="block">Set _intlObj_.[[MaximumFractionDigits]] to _mxfd_.</ins>
+        1. <ins class="block">Else If _intlObj_.[[Notation]] is `"compact"`, then</ins>
+          1. <ins class="block">Set _intlObj_.[[RoundingType]] to `"compactRounding"`.</ins>
+        1. <ins class="block">Else,</ins>
+          1. <ins class="block">Set _intlObj_.[[RoundingType]] to `"fractionDigits"`.</ins>
+          1. <ins class="block">Set _intlObj_.[[MinimumFractionDigits]] to _mnfdDefault_.</ins>
+          1. <ins class="block">Set _intlObj_.[[MaximumFractionDigits]] to _mxfdDefault_.</ins>
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-initializenumberformat" aoid="InitializeNumberFormat">
+      <h1>InitializeNumberFormat ( _numberFormat_, _locales_, _options_ )</h1>
+
+      <p>
+        The abstract operation InitializeNumberFormat accepts the arguments _numberFormat_ (which must be an object), _locales_, and _options_. It initializes _numberFormat_ as a NumberFormat object. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _requestedLocales_ be ? CanonicalizeLocaleList(_locales_).
+        1. If _options_ is *undefined*, then
+          1. Let _options_ be ObjectCreate(*null*).
+        1. Else,
+          1. Let _options_ be ? ToObject(_options_).
+        1. Let _opt_ be a new Record.
+        1. Let _matcher_ be ? GetOption(_options_, `"localeMatcher"`, `"string"`, &laquo; `"lookup"`, `"best fit"` &raquo;, `"best fit"`).
+        1. Set _opt_.[[localeMatcher]] to _matcher_.
+        1. Let _localeData_ be %NumberFormat%.[[LocaleData]].
+        1. Let _r_ be ResolveLocale(%NumberFormat%.[[AvailableLocales]], _requestedLocales_, _opt_, %NumberFormat%.[[RelevantExtensionKeys]], _localeData_).
+        1. Set _numberFormat_.[[Locale]] to _r_.[[locale]].
+        1. <ins class="block">Set _numberFormat_.[[DataLocale]] to _r_.[[dataLocale]].</ins>
+        1. Set _numberFormat_.[[NumberingSystem]] to _r_.[[nu]].
+        1. <del class="block">Let _dataLocale_ be _r_.[[dataLocale]].</del>
+        1. <del class="block">Let _style_ be ? GetOption(_options_, `"style"`, `"string"`, &laquo; `"decimal"`, `"percent"`, `"currency"` &raquo;, `"decimal"`).</del>
+        1. <del class="block">Set _numberFormat_.[[Style]] to _style_.</del>
+        1. <del class="block">Let _currency_ be ? GetOption(_options_, `"currency"`, `"string"`, *undefined*, *undefined*).</del>
+        1. <del class="block">If _currency_ is not *undefined*, then</del>
+          1. <del class="block">If the result of IsWellFormedCurrencyCode(_currency_) is *false*, throw a *RangeError* exception.</del>
+        1. <del class="block">If _style_ is `"currency"` and _currency_ is *undefined*, throw a *TypeError* exception.</del>
+        1. <del class="block">If _style_ is `"currency"`, then</del>
+          1. <del class="block">Let _currency_ be the result of converting _currency_ to upper case as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.</del>
+          1. <del class="block">Set _numberFormat_.[[Currency]] to _currency_.</del>
+          1. <del class="block">Let _cDigits_ be CurrencyDigits(_currency_).</del>
+        1. <del class="block">Let _currencyDisplay_ be ? GetOption(_options_, `"currencyDisplay"`, `"string"`, &laquo; `"code"`, `"symbol"`, `"name"` &raquo;, `"symbol"`).</del>
+        1. <del class="block">If _style_ is `"currency"`, set _numberFormat_.[[CurrencyDisplay]] to _currencyDisplay_.</del>
+        1. <ins class="block">Perform ? SetNumberFormatUnitOptions(_numberFormat_, _options_).</ins>
+        1. <ins class="block">Let _style_ be _numberFormat_.[[Style]].</ins>
+        1. If _style_ is `"currency"`, then
+          1. <ins class="block">Let _currency_ be _numberFormat_.[[Currency]].</ins>
+          1. <ins class="block">Let _cDigits_ be CurrencyDigits(_currency_).</ins>
+          1. Let _mnfdDefault_ be _cDigits_.
+          1. Let _mxfdDefault_ be _cDigits_.
+        1. Else,
+          1. Let _mnfdDefault_ be 0.
+          1. If _style_ is `"percent"`, then
+            1. Let _mxfdDefault_ be 0.
+          1. Else,
+            1. Let _mxfdDefault_ be 3.
+        1. <ins class="block">Let _notation_ be ? GetOption(_options_, `"notation"`, `"string"`, &laquo; `"standard"`, `"scientific"`, `"engineering"`, `"compact"` &raquo;, `"standard"`).</ins>
+        1. <ins class="block">Set _numberFormat_.[[Notation]] to _notation_.</ins>
+        1. Perform ? SetNumberFormatDigitOptions(_numberFormat_, _options_, _mnfdDefault_, _mxfdDefault_).
+        1. <ins class="block">Let _compactDisplay_ be ? GetOption(_options_, `"compactDisplay"`, `"string"`, &laquo; `"short"`, `"long"` &raquo;, `"short"`).</ins>
+        1. <ins class="block">If _notation_ is `"compact"`, then</ins>
+          1. <ins class="block">Set _numberFormat_.[[CompactDisplay]] to _compactDisplay_.</ins>
+        1. Let _useGrouping_ be ? GetOption(_options_, `"useGrouping"`, `"boolean"`, *undefined*, *true*).
+        1. Set _numberFormat_.[[UseGrouping]] to _useGrouping_.
+        1. <ins class="block">Let _signDisplay_ be ? GetOption(_options_, `"signDisplay"`, `"string"`, &laquo; `"auto"`, `"never"`, `"always"`, `"exceptZero"` &raquo;, `"auto"`).</ins>
+        1. <ins class="block">Set _numberFormat_.[[SignDisplay]] to _signDisplay_.</ins>
+        1. <del class="block">Let _dataLocaleData_ be _localeData_.[[&lt;_dataLocale_&gt;]].</del>
+        1. <del class="block">Let _patterns_ be _dataLocaleData_.[[patterns]].</del>
+        1. <del class="block">Assert: _patterns_ is a record (see <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>).</del>
+        1. <del class="block">Let _stylePatterns_ be _patterns_.[[&lt;_style_&gt;]].</del>
+        1. <del class="block">Set _numberFormat_.[[PositivePattern]] to _stylePatterns_.[[positivePattern]].</del>
+        1. <del class="block">Set _numberFormat_.[[NegativePattern]] to _stylePatterns_.[[negativePattern]].</del>
+        1. Return _numberFormat_.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-currencydigits" aoid="CurrencyDigits">
+      <h1>CurrencyDigits ( _currency_ )</h1>
+
+      <p>
+        When the abstract operation CurrencyDigits is called with an argument _currency_ (which must be an upper case String value), the following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. If the ISO 4217 currency and funds code list contains _currency_ as an alphabetic code, return the minor unit value corresponding to the _currency_ from the list; otherwise, return 2.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-number-format-functions">
+      <h1>Number Format Functions</h1>
+
+      <p>A Number format function is an anonymous built-in function that has a [[NumberFormat]] internal slot.</p>
+      <p>When a Number format function _F_ is called with optional argument _value_, the following steps are taken:</p>
+
+      <emu-alg>
+        1. Let _nf_ be _F_.[[NumberFormat]].
+        1. Assert: Type(_nf_) is Object and _nf_ has an [[InitializedNumberFormat]] internal slot.
+        1. If _value_ is not provided, let _value_ be *undefined*.
+        1. Let _x_ be ? ToNumber(_value_).
+        1. Return FormatNumber(_nf_, _x_).
+      </emu-alg>
+
+      <p>
+        The `length` property of a Number format function is 1.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumberstring" aoid="FormatNumberToString">
+      <h1>FormatNumberToString ( _intlObject_, _x_ )</h1>
+
+      <p>
+        The FormatNumberToString abstract operation is called with arguments _intlObject_ (which must be an object with [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], and [[MaximumFractionDigits]] internal slots), and _x_ (which must be a Number value), and returns <ins>a Record containing two values:</ins> _x_ as a string value with digits formatted according to the five formatting parameters <ins>in the field [[FormattedString]], and the final floating decimal value of _x_ after rounding has been performed in the field [[RoundedNumber]]</ins>.
+      </p>
+
+      <del class="block">
+      <emu-alg>
+        1. If _intlObject_.[[MinimumSignificantDigits]] and _intlObject_.[[MaximumSignificantDigits]] are both not *undefined*, then
+          1. Let _result_ be ToRawPrecision(_x_, _intlObject_.[[MinimumSignificantDigits]], _intlObject_.[[MaximumSignificantDigits]]).
+        1. Else,
+          1. Let _result_ be ToRawFixed(_x_, _intlObject_.[[MinimumIntegerDigits]], _intlObject_.[[MinimumFractionDigits]], _intlObject_.[[MaximumFractionDigits]]).
+        1. Return _result_.
+      </emu-alg>
+      </del>
+      <ins class="block">
+      <emu-alg>
+        1. Let _isNegative_ be _x_ &lt; 0 or _x_ is *-0*.
+        1. If _isNegative_, then
+          1. Let _x_ be -_x_.
+        1. If _intlObject_.[[RoundingType]] is `"significantDigits"`, then
+          1. Let _result_ be ToRawPrecision(_x_, _intlObject_.[[MinimumSignificantDigits]], _intlObject_.[[MaximumSignificantDigits]]).
+        1. Else If _intlObject_.[[RoundingType]] is `"fractionDigits"`, then,
+          1. Let _result_ be ToRawFixed(_x_, _intlObject_.[[MinimumFractionDigits]], _intlObject_.[[MaximumFractionDigits]]).
+        1. Else,
+          1. Assert: _intlObject_.[[RoundingType]] is `"compactRounding"`.
+          1. Let _result_ be ToRawFixed(_x_, 0, 0).
+          1. If _result_.[[IntegerDigitsCount]] = 1, then
+            1. Let _result_ be ToRawPrecision(_x_, 1, 2).
+        1. Let _x_ be _result_.[[RoundedNumber]].
+        1. Let _string_ be _result_.[[FormattedString]].
+        1. Let _int_ be _result_.[[IntegerDigitsCount]].
+        1. Let _minInteger_ be _intlObject_.[[MinimumIntegerDigits]].
+        1. If _int_ < _minInteger_, then
+          1. Let _forwardZeros_ be the String consisting of _minInteger_–_int_ occurrences of the character `"0"`.
+          1. Let _string_ be the concatenation of Strings _forwardZeros_ and _string_.
+        1. If _isNegative_, then
+          1. Let _x_ be -_x_.
+        1. Return the Record { [[RoundedNumber]]: _x_, [[FormattedString]]: _string_ }.
+      </emu-alg>
+      </ins>
+    </emu-clause>
+
+    <emu-clause id="sec-partitionnumberpattern" aoid="PartitionNumberPattern">
+      <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
+
+      <p>
+        The PartitionNumberPattern abstract operation is called with arguments _numberFormat_ (which must be an object initialized as a NumberFormat) and _x_ (which must be a Number value), interprets _x_ as a numeric value, and creates the corresponding parts according to the effective locale and the formatting options of _numberFormat_. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. <del class="block">If _x_ is not *NaN* and _x_ &lt; 0 or _x_ is *-0*, then</del>
+          1. <del class="block">Let _x_ be -_x_.</del>
+          1. <del class="block">Let _pattern_ be _numberFormat_.[[NegativePattern]].</del>
+        1. <del class="block">Else,</del>
+          1. <del class="block">Let _pattern_ be _numberFormat_.[[PositivePattern]].</del>
+        1. <ins class="block">Let _exponent_ be 0.</ins>
+        1. <ins class="block">If _x_ is *NaN*, then</ins>
+          1. <ins class="block">Let _n_ be an implementation- and locale-dependent (ILD) String value indicating the *NaN* value.</ins>
+        1. <ins class="block">Else if _x_ is not a finite Number,</ins>
+          1. <ins class="block">Let _n_ be an ILD String value indicating infinity.</ins>
+        1. <ins class="block">Else,</ins>
+          1. <ins class="block">If _numberFormat_.[[Style]] is `"percent"`, let _x_ be 100 × _x_.</ins>
+          1. <ins class="block">Let _exponent_ be ComputeExponent(_numberFormat_, _x_).</ins>
+          1. <ins class="block">Let _x_ be _x_ × 10<sup>-_exponent_</sup>.</ins>
+          1. <ins class="block">Let _formatNumberResult_ be FormatNumberToString(_numberFormat_, _x_).</ins>
+          1. <ins class="block">Let _n_ be _formatNumberResult_.[[FormattedString]].</ins>
+          1. <ins class="block">Let _x_ be _formatNumberResult_.[[RoundedNumber]].</ins>
+        1. <ins class="block">Let _pattern_ be GetNumberFormatPattern(_numberFormat_, _x_, _exponent_)</ins>
+        1. Let _result_ be a new empty List.
+        1. Let _beginIndex_ be Call(%StringProto_indexOf%, _pattern_, &laquo; `"{"`, 0 &raquo;).
+        1. Let _endIndex_ be 0.
+        1. Let _nextIndex_ be 0.
+        1. Let _length_ be the number of code units in _pattern_.
+        1. Repeat, while _beginIndex_ is an integer index into _pattern_
+          1. Set _endIndex_ to Call(%StringProto_indexOf%, _pattern_, &laquo; `"}"`, _beginIndex_ &raquo;).
+          1. Assert: _endIndex_ is greater than _beginIndex_.
+          1. If _beginIndex_ is greater than _nextIndex_, then
+            1. Let _literal_ be a substring of _pattern_ from position _nextIndex_, inclusive, to position _beginIndex_, exclusive.
+            1. Append a new Record { [[Type]]: `"literal"`, [[Value]]: _literal_ } as the last element of _result_.
+          1. Let _p_ be the substring of _pattern_ from position _beginIndex_, exclusive, to position _endIndex_, exclusive.
+          1. If _p_ is equal to `"number"`, then
+            1. If _x_ is *NaN*, then
+              1. <del class="block">Let _n_ be an implementation- and locale-dependent (ILD) String value indicating the *NaN* value.</del>
+              1. Append a new Record { [[Type]]: `"nan"`, [[Value]]: _n_ } as the last element of _result_.
+            1. Else if _x_ is not a finite Number,
+              1. <del class="block">Let _n_ be an ILD String value indicating infinity.</del>
+              1. Append a new Record { [[Type]]: `"infinity"`, [[Value]]: _n_ } as the last element of _result_.
+            1. Else,
+              1. <del class="block">If _numberFormat_.[[Style]] is `"percent"`, let _x_ be 100 × _x_.</del>
+              1. <del class="block">Let _n_ be FormatNumberToString(_numberFormat_, _x_).</del>
+              1. If the _numberFormat_.[[NumberingSystem]] matches one of the values in the `"Numbering System"` column of <emu-xref href="#table-numbering-system-digits"></emu-xref> below, then
+                1. Let _digits_ be a List whose 10 String valued elements are the UTF-16 string representations of the 10 _digits_ specified in the `"Digits"` column of the matching row in <emu-xref href="#table-numbering-system-digits"></emu-xref>.
+                1. Replace each _digit_ in _n_ with the value of _digits_[_digit_].
+              1. Else use an implementation dependent algorithm to map _n_ to the appropriate representation of _n_ in the given numbering system.
+              1. Let _decimalSepIndex_ be Call(%StringProto_indexOf%, _n_, &laquo; `"."`, 0 &raquo;).
+              1. If _decimalSepIndex_ > 0, then
+                1. Let _integer_ be the substring of _n_ from position 0, inclusive, to position _decimalSepIndex_, exclusive.
+                1. Let _fraction_ be the substring of _n_ from position _decimalSepIndex_, exclusive, to the end of _n_.
+              1. Else,
+                1. Let _integer_ be _n_.
+                1. Let _fraction_ be *undefined*.
+              1. If the _numberFormat_.[[UseGrouping]] is *true*, then
+                1. Let _groupSepSymbol_ be the implementation-, locale-, and numbering system-dependent (ILND) String representing the grouping separator.
+                1. Let _groups_ be a List whose elements are, in left to right order, the substrings defined by ILND set of locations within the _integer_.
+                1. Assert: The number of elements in _groups_ List is greater than 0.
+                1. Repeat, while _groups_ List is not empty
+                  1. Remove the first element from _groups_ and let _integerGroup_ be the value of that element.
+                  1. Append a new Record { [[Type]]: `"integer"`, [[Value]]: _integerGroup_ } as the last element of _result_.
+                  1. If _groups_ List is not empty, then
+                    1. Append a new Record { [[Type]]: `"group"`, [[Value]]: _groupSepSymbol_ } as the last element of _result_.
+              1. Else,
+                1. Append a new Record { [[Type]]: `"integer"`, [[Value]]: _integer_ } as the last element of _result_.
+              1. If _fraction_ is not *undefined*, then
+                1. Let _decimalSepSymbol_ be the ILND String representing the decimal separator.
+                1. Append a new Record { [[Type]]: `"decimal"`, [[Value]]: _decimalSepSymbol_ } as the last element of _result_.
+                1. Append a new Record { [[Type]]: `"fraction"`, [[Value]]: _fraction_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"plusSign"`, then
+            1. Let _plusSignSymbol_ be the ILND String representing the plus sign.
+            1. Append a new Record { [[Type]]: `"plusSign"`, [[Value]]: _plusSignSymbol_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"minusSign"`, then
+            1. Let _minusSignSymbol_ be the ILND String representing the minus sign.
+            1. Append a new Record { [[Type]]: `"minusSign"`, [[Value]]: _minusSignSymbol_ } as the last element of _result_.
+          1. <ins class="block">Else if _p_ is equal to `"compactSymbol"`, then</ins>
+            1. <ins class="block">Let _compactSymbol_ be an ILD string representing _exponent_ in short form, which may depend on _x_ in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a `"{compactSymbol}"` placeholder.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"compact"`, [[Value]]: _compactSymbol_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"compactName"`, then</ins>
+            1. <ins class="block">Let _compactName_ be an ILD string representing _exponent_ in long form, which may depend on _x_ in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a `"{compactName}"` placeholder.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"compact"`, [[Value]]: _compactName_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"scientificSeparator"`, then</ins>
+            1. <ins class="block">Let _scientificSeparator_ be the ILND String representing the exponent separator.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"exponentSeparator"`, [[Value]]: _scientificSeparator_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"scientificExponent"`, then</ins>
+            1. <ins class="block">If _exponent_ &lt; 0, then</ins>
+              1. <ins class="block">Let _minusSignSymbol_ be the ILND String representing the minus sign.</ins>
+              1. <ins class="block">Append a new Record { [[Type]]: `"exponentMinusSign"`, [[Value]]: _minusSignSymbol_ } as the last element of _result_.</ins>
+              1. <ins class="block">Let _exponent_ be -_exponent_.</ins>
+            1. <ins class="block">Let _exponentResult_ be ToRawFixed(_exponent_, 1, 0, 0).</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"exponentInteger"`, [[Value]]: _exponentResult_.[[FormattedString]] } as the last element of _result_.</ins>
+          1. Else if _p_ is equal to `"percentSign"` <del>and _numberFormat_.[[Style]] is `"percent"`</del>, then
+            1. Let _percentSignSymbol_ be the ILND String representing the percent sign.
+            1. Append a new Record { [[Type]]: `"percentSign"`, [[Value]]: _percentSignSymbol_ } as the last element of _result_.
+          1. <ins class="block">Else if _p_ is equal to `"unitSymbol"` and _numberFormat_.[[Style]] is `"unit"`, then</ins>
+            1. <ins class="block">Let _unit_ be _numberFormat_.[[Unit]].</ins>
+            1. <ins class="block">Let _mu_ be an ILD string representing _unit_ in short form, which may depend on _x_ in languages having different plural forms.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"unit"`, [[Value]]: _mu_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"unitNarrowSymbol"` and _numberFormat_.[[Style]] is `"unit"`, then</ins>
+            1. <ins class="block">Let _unit_ be _numberFormat_.[[Unit]].</ins>
+            1. <ins class="block">Let _mu_ be an ILD string representing _unit_ in narrow form, which may depend on _x_ in languages having different plural forms.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"unit"`, [[Value]]: _mu_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"unitName"` and _numberFormat_.[[Style]] is `"unit"`, then</ins>
+            1. <ins class="block">Let _unit_ be _numberFormat_.[[Unit]].</ins>
+            1. <ins class="block">Let _mu_ be an ILD string representing _unit_ in long form, which may depend on _x_ in languages having different plural forms.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"unit"`, [[Value]]: _mu_ } as the last element of _result_.</ins>
+          1. <del class="block">Else if _p_ is equal to `"currency"` and _numberFormat_.[[Style]] is `"currency"`, then</del>
+            1. <del class="block">Let _currency_ be _numberFormat_.[[Currency]].</del>
+            1. <del class="block">Assert: _numberFormat_.[[CurrencyDisplay]] is `"code"`, `"symbol"` or `"name"`.</del>
+            1. <del class="block">If _numberFormat_.[[CurrencyDisplay]] is `"code"`, then</del>
+              1. <del class="block">Let _cd_ be _currency_.</del>
+            1. <del class="block">Else if _numberFormat_.[[CurrencyDisplay]] is `"symbol"`, then</del>
+              1. <del class="block">Let _cd_ be an ILD string representing _currency_ in short form. If the implementation does not have such a representation of _currency_, use _currency_ itself.</del>
+            1. <del class="block">Else if _numberFormat_.[[CurrencyDisplay]] is `"name"`, then</del>
+              1. <del class="block">Let _cd_ be an ILD string representing _currency_ in long form. If the implementation does not have such a representation of _currency_, use _currency_ itself.</del>
+            1. <del class="block">Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.</del>
+          1. <ins class="block">Else if _p_ is equal to `"currencyCode"` and _numberFormat_.[[Style]] is `"currency"`, then</ins>
+            1. <ins class="block">Let _currency_ be _numberFormat_.[[Currency]].</ins>
+            1. <ins class="block">Let _cd_ be _currency_.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"currencySymbol"` and _numberFormat_.[[Style]] is `"currency"`, then</ins>
+            1. <ins class="block">Let _currency_ be _numberFormat_.[[Currency]].</ins>
+            1. <ins class="block">Let _cd_ be an ILD string representing _currency_ in short form. If the implementation does not have such a representation of _currency_, use _currency_ itself.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"currencyNarrowSymbol"` and _numberFormat_.[[Style]] is `"currency"`, then</ins>
+            1. <ins class="block">Let _currency_ be _numberFormat_.[[Currency]].</ins>
+            1. <ins class="block">Let _cd_ be an ILD string representing _currency_ in narrow form. If the implementation does not have such a representation of _currency_, use _currency_ itself.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.</ins>
+          1. <ins class="block">Else if _p_ is equal to `"currencyName"` and _numberFormat_.[[Style]] is `"currency"`, then</ins>
+            1. <ins class="block">Let _currency_ be _numberFormat_.[[Currency]].</ins>
+            1. <ins class="block">Let _cd_ be an ILD string representing _currency_ in long form, which may depend on _x_ in languages having different plural forms. If the implementation does not have such a representation of _currency_, use _currency_ itself.</ins>
+            1. <ins class="block">Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.</ins>
+          1. Else,
+            1. Let _unknown_ be an ILND String based on _x_ and _p_.
+            1. Append a new Record { [[Type]]: `"unknown"`, [[Value]]: _unknown_ } as the last element of _result_.
+          1. Set _nextIndex_ to _endIndex_ + 1.
+          1. Set _beginIndex_ to Call(%StringProto_indexOf%, _pattern_, &laquo; `"{"`, _nextIndex_ &raquo;).
+        1. If _nextIndex_ is less than _length_, then
+          1. Let _literal_ be the substring of _pattern_ from position _nextIndex_, inclusive, to position _length_, exclusive.
+          1. Append a new Record { [[Type]]: `"literal"`, [[Value]]: _literal_ } as the last element of _result_.
+        1. Return _result_.
+      </emu-alg>
+
+      <emu-table id="table-numbering-system-digits">
+        <emu-caption>Numbering systems with simple digit mappings</emu-caption>
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Numbering System</th>
+              <th>Digits</th>
+            </tr>
+          </thead>
+          <tr>
+            <td>arab</td>
+            <td>U+0660 to U+0669</td>
+          </tr>
+          <tr>
+            <td>arabext</td>
+            <td>U+06F0 to U+06F9</td>
+          </tr>
+          <tr>
+            <td>bali</td>
+            <td>U+1B50 to U+1B59</td>
+          </tr>
+          <tr>
+            <td>beng</td>
+            <td>U+09E6 to U+09EF</td>
+          </tr>
+          <tr>
+            <td>deva</td>
+            <td>U+0966 to U+096F</td>
+          </tr>
+          <tr>
+            <td>fullwide</td>
+            <td>U+FF10 to U+FF19</td>
+          </tr>
+          <tr>
+            <td>gujr</td>
+            <td>U+0AE6 to U+0AEF</td>
+          </tr>
+          <tr>
+            <td>guru</td>
+            <td>U+0A66 to U+0A6F</td>
+          </tr>
+          <tr>
+            <td>hanidec</td>
+            <td>U+3007, U+4E00, U+4E8C, U+4E09, U+56DB, U+4E94, U+516D, U+4E03, U+516B, U+4E5D</td>
+          </tr>
+          <tr>
+            <td>khmr</td>
+            <td>U+17E0 to U+17E9</td>
+          </tr>
+          <tr>
+            <td>knda</td>
+            <td>U+0CE6 to U+0CEF</td>
+          </tr>
+          <tr>
+            <td>laoo</td>
+            <td>U+0ED0 to U+0ED9</td>
+          </tr>
+          <tr>
+            <td>latn</td>
+            <td>U+0030 to U+0039</td>
+          </tr>
+          <tr>
+            <td>limb</td>
+            <td>U+1946 to U+194F</td>
+          </tr>
+          <tr>
+            <td>mlym</td>
+            <td>U+0D66 to U+0D6F</td>
+          </tr>
+          <tr>
+            <td>mong</td>
+            <td>U+1810 to U+1819</td>
+          </tr>
+          <tr>
+            <td>mymr</td>
+            <td>U+1040 to U+1049</td>
+          </tr>
+          <tr>
+            <td>orya</td>
+            <td>U+0B66 to U+0B6F</td>
+          </tr>
+          <tr>
+            <td>tamldec</td>
+            <td>U+0BE6 to U+0BEF</td>
+          </tr>
+          <tr>
+            <td>telu</td>
+            <td>U+0C66 to U+0C6F</td>
+          </tr>
+          <tr>
+            <td>thai</td>
+            <td>U+0E50 to U+0E59</td>
+          </tr>
+          <tr>
+            <td>tibt</td>
+            <td>U+0F20 to U+0F29</td>
+          </tr>
+        </table>
+      </emu-table>
+
+      <emu-note>
+        The computations rely on String values and locations within numeric strings that are dependent upon the implementation and the effective locale of _numberFormat_ ("ILD") or upon the implementation, the effective locale, and the numbering system of _numberFormat_ ("ILND"). The ILD and ILND Strings mentioned, other than those for currency names, must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.
+      </emu-note>
+
+      <emu-note>
+        It is recommended that implementations use the locale provided by the Common Locale Data Repository (available at <a href="http://cldr.unicode.org/">http://cldr.unicode.org/</a>).
+      </emu-note>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumber" aoid="FormatNumber">
+      <h1>FormatNumber( _numberFormat_, _x_ )</h1>
+
+      <p>
+        The FormatNumber abstract operation is called with arguments _numberFormat_ (which must be an object initialized as a NumberFormat) and _x_ (which must be a Number value), and performs the following steps:
+      </p>
+
+      <emu-alg>
+        1. Let _parts_ be ? PartitionNumberPattern(_numberFormat_, _x_).
+        1. Let _result_ be the empty String.
+        1. For each _part_ in _parts_, do
+          1. Set _result_ to a String value produced by concatenating _result_ and _part_.[[Value]].
+        1. Return _result_.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumbertoparts" aoid="FormatNumberToParts">
+      <h1>FormatNumberToParts( _numberFormat_, _x_ )</h1>
+
+      <p>
+        The FormatNumberToParts abstract operation is called with arguments _numberFormat_ (which must be an object initialized as a NumberFormat) and _x_ (which must be a Number value), and performs the following steps:
+      </p>
+
+      <emu-alg>
+        1. Let _parts_ be ? PartitionNumberPattern(_numberFormat_, _x_).
+        1. Let _result_ be ArrayCreate(0).
+        1. Let _n_ be 0.
+        1. For each _part_ in _parts_, do
+          1. Let _O_ be ObjectCreate(%ObjectPrototype%).
+          1. Perform ! CreateDataPropertyOrThrow(_O_, `"type"`, _part_.[[Type]]).
+          1. Perform ! CreateDataPropertyOrThrow(_O_, `"value"`, _part_.[[Value]]).
+          1. Perform ! CreateDataPropertyOrThrow(_result_, ! ToString(_n_), _O_).
+          1. Increment _n_ by 1.
+        1. Return _result_.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-torawprecision" aoid="ToRawPrecision">
+      <h1>ToRawPrecision( _x_, _minPrecision_, _maxPrecision_ )</h1>
+
+      <p>
+        When the ToRawPrecision abstract operation is called with arguments _x_ (which must be a finite non-negative number), _minPrecision_, and _maxPrecision_ (both must be integers between 1 and 21), the following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _p_ be _maxPrecision_.
+        1. If _x_ = 0, then
+          1. Let _m_ be the String consisting of _p_ occurrences of the character `"0"`.
+          1. Let _e_ be 0.
+          1. <ins class="block">Let _xFinal_ be 0.</ins>
+        1. Else,
+          1. <del class="block">Let _e_ and _n_ be integers such that 10<sup>_p_–1</sup> ≤ _n_ < 10<sup>_p_</sup> and for which the exact mathematical value of _n_ × 10<sup>_e_–_p_+1</sup> – _x_ is as close to zero as possible. If there are two such sets of _e_ and _n_, pick the _e_ and _n_ for which _n_ × 10<sup>_e_–_p_+1</sup> is larger.</del>
+          1. <ins class="block">Let _e_ be the base 10 logarithm of _x_ rounded down to the nearest integer.</ins>
+          1. <ins class="block">Let _n_ be an integer such that 10<sup>_p_–1</sup> ≤ _n_ < 10<sup>_p_</sup> and for which the exact mathematical value of _n_ × 10<sup>_e_–_p_+1</sup> – _x_ is as close to zero as possible. If there is more than one such _n_, pick the one for which _n_ × 10<sup>_e_–_p_+1</sup> is larger.</ins>
+          1. Let _m_ be the String consisting of the digits of the decimal representation of _n_ (in order, with no leading zeroes).
+          1. <ins class="block">Let _xFinal_ be _n_ × 10<sup>_e_–_p_+1</sup>.</ins>
+        1. <del class="block">If _e_ ≥ _p_, then</del>
+          1. <del class="block">Return the concatenation of _m_ and _e_-_p_+1 occurrences of the character `"0"`.</del>
+        1. <del class="block">If _e_ = _p_-1, then</del>
+          1. <del class="block">Return _m_.</del>
+        1. <ins class="block">If _e_ ≥ _p_–1, then</ins>
+          1. <ins class="block">Let _m_ be the concatenation of _m_ and _e_–_p_+1 occurrences of the character `"0"`.</ins>
+          1. <ins class="block">Let _int_ be _e_+1.</ins>
+        1. <ins>Else</ins> If _e_ ≥ 0, then
+          1. Let _m_ be the concatenation of the first _e_+1 characters of _m_, the character `"."`, and the remaining _p_–(_e_+1) characters of _m_.
+          1. <ins class="block">Let _int_ be _e_+1.</ins>
+        1. <del>If _e_ < 0, then</del><ins>Else,</ins>
+          1. <ins class="block">Assert: _e_ < 0.</ins>
+          1. Let _m_ be the concatenation of the String `"0."`, –(_e_+1) occurrences of the character `"0"`, and the string _m_.
+          1. <ins class="block">Let _int_ be 1.</ins>
+        1. If _m_ contains the character `"."`, and _maxPrecision_ > _minPrecision_, then
+          1. Let _cut_ be _maxPrecision_ – _minPrecision_.
+          1. Repeat, while _cut_ > 0 and the last character of _m_ is `"0"`
+            1. Remove the last character from _m_.
+            1. Decrease _cut_ by 1.
+          1. If the last character of _m_ is `"."`, then
+            1. Remove the last character from _m_.
+        1. <del class="block">Return _m_.</del>
+        1. <ins class="block">Return the Record { [[FormattedString]]: _m_, [[RoundedNumber]]: _xFinal_, [[IntegerDigitsCount]]: _int_ }.</ins>
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-torawfixed" aoid="ToRawFixed">
+      <h1>ToRawFixed( _x_, _minInteger_, _minFraction_, _maxFraction_ )</h1>
+
+      <p>
+        When the ToRawFixed abstract operation is called with arguments _x_ (which must be a finite non-negative number), _minInteger_ (which must be an integer between 1 and 21), _minFraction_, and _maxFraction_ (which must be integers between 0 and 20), the following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _f_ be _maxFraction_.
+        1. Let _n_ be an integer for which the exact mathematical value of _n_ ÷ 10<sup>_f_</sup> – _x_ is as close to zero as possible. If there are two such _n_, pick the larger _n_.
+        1. <ins class="block">Let _xFinal_ be _n_ ÷ 10<sup>_f_</sup>.</ins>
+        1. If _n_ = 0, let _m_ be the String `"0"`. Otherwise, let _m_ be the String consisting of the digits of the decimal representation of _n_ (in order, with no leading zeroes).
+        1. If _f_ ≠ 0, then
+          1. Let _k_ be the number of characters in _m_.
+          1. If _k_ ≤ _f_, then
+            1. Let _z_ be the String consisting of _f_+1–_k_ occurrences of the character `"0"`.
+            1. Let _m_ be the concatenation of Strings _z_ and _m_.
+            1. Let _k_ be _f_+1.
+          1. Let _a_ be the first _k_–_f_ characters of _m_, and let _b_ be the remaining _f_ characters of _m_.
+          1. Let _m_ be the concatenation of the three Strings _a_, `"."`, and _b_.
+          1. Let _int_ be the number of characters in _a_.
+        1. Else, let _int_ be the number of characters in _m_.
+        1. Let _cut_ be _maxFraction_ – _minFraction_.
+        1. Repeat, while _cut_ > 0 and the last character of _m_ is `"0"`
+          1. Remove the last character from _m_.
+          1. Decrease _cut_ by 1.
+        1. If the last character of _m_ is `"."`, then
+          1. Remove the last character from _m_.
+        1. <del class="block">If _int_ < _minInteger_, then</del>
+          1. <del class="block">Let _z_ be the String consisting of _minInteger_–_int_ occurrences of the character `"0"`.</del>
+          1. <del class="block">Let _m_ be the concatenation of Strings _z_ and _m_.</del>
+        1. <del class="block">Return _m_.</del>
+        1. <ins class="block">Return the Record { [[FormattedString]]: _m_, [[RoundedNumber]]: _xFinal_, [[IntegerDigitsCount]]: _int_ }.</ins>
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-unwrapnumberformat" aoid="UnwrapNumberFormat">
+      <h1>UnwrapNumberFormat( _nf_ )</h1>
+      <p>
+        The UnwrapNumberFormat abstract operation gets the underlying NumberFormat operation
+        for various methods which implement ECMA-402 v1 semantics for supporting initializing
+        existing Intl objects.
+      </p>
+      <emu-alg>
+        1. Assert: Type(_nf_) is Object.
+      </emu-alg>
+      <emu-normative-optional>
+      <emu-alg>
+        2. If _nf_ does not have an [[InitializedNumberFormat]] internal slot and ? InstanceofOperator(_nf_, %NumberFormat%) is *true*, then
+          1. Let _nf_ be ? Get(_nf_, %Intl%.[[FallbackSymbol]]).
+      </emu-alg>
+      </emu-normative-optional>
+      <emu-alg>
+        3. If Type(_nf_) is not Object or _nf_ does not have an [[InitializedNumberFormat]] internal slot, then
+          1. Throw a *TypeError* exception.
+        1. Return _nf_.
+      </emu-alg>
+      <emu-note>See <emu-xref href="#legacy-constructor"></emu-xref> for the motivation of the normative optional text.</emu-note>
+    </emu-clause>
+
+    <ins class="block">
+    <emu-clause id="sec-setnumberformatunitoptions" aoid="SetNumberFormatUnitOptions">
+      <h1>SetNumberFormatUnitOptions ( _intlObj_, _options_ )</h1>
+      <p>
+        The abstract operation SetNumberFormatUnitOptions resolves the user-specified options relating to units onto the intl object.
+      </p>
+      <emu-alg>
+        1. Assert: Type(_intlObj_) is Object.
+        1. Assert: Type(_options_) is Object.
+        1. Let _style_ be ? GetOption(_options_, `"style"`, `"string"`, &laquo; `"decimal"`, `"percent"`, `"currency"`, `"unit"` &raquo;, `"decimal"`).
+        1. Set _intlObj_.[[Style]] to _style_.
+        1. Let _currency_ be ? GetOption(_options_, `"currency"`, `"string"`, *undefined*, *undefined*).
+        1. Let _currencyDisplay_ be ? GetOption(_options_, `"currencyDisplay"`, `"string"`, &laquo; `"code"`, `"symbol"`, `"narrowSymbol"`, `"name"` &raquo;, `"symbol"`).
+        1. Let _currencySign_ be ? GetOption(_options_, `"currencySign"`, `"string"`, &laquo; `"standard"`, `"accounting"` &raquo;, `"standard"`).
+        1. Let _unit_ be ? GetOption(_options_, `"unit"`, `"string"`, *undefined*, *undefined*).
+        1. Let _unitDisplay_ be ? GetOption(_options_, `"unitDisplay"`, `"string"`, &laquo; `"short"`, `"narrow"`, `"long"` &raquo;, `"short"`).
+        1. If _style_ is `"currency"`, then
+          1. If _currency_ is *undefined*, throw a *TypeError* exception.
+          1. If the result of IsWellFormedCurrencyCode(_currency_) is *false*, throw a *RangeError* exception.
+          1. Let _currency_ be the result of converting _currency_ to upper case as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+          1. Set _intlObj_.[[Currency]] to _currency_.
+          1. Set _intlObj_.[[CurrencyDisplay]] to _currencyDisplay_.
+          1. Set _intlObj_.[[CurrencySign]] to _currencySign_.
+        1. If _style_ is `"unit"`, then
+          1. If _unit_ is *undefined*, throw a *TypeError* exception.
+          1. If the result of IsWellFormedUnitIdentifier(_unit_) is *false*, throw a *RangeError* exception.
+          1. Set _intlObj_.[[Unit]] to _unit_.
+          1. Set _intlObj_.[[UnitDisplay]] to _unitDisplay_.
+      </emu-alg>
+    </emu-clause>
+    </ins>
+
+    <ins class="block">
+    <emu-clause id="sec-getnumberformatpattern" aoid="GetNumberFormatPattern">
+      <h1>GetNumberFormatPattern ( _numberFormat_, _x_, _exponent_ )</h1>
+      <p>
+        The abstract operation GetNumberFormatPattern considers the resolved unit-related options in the number format object along with the final scaled and rounded number being formatted and returns a pattern, a String value as described in <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>. 
+      </p>
+      <emu-alg>
+        1. Let _localeData_ be %NumberFormat%.[[LocaleData]].
+        1. Let _dataLocale_ be _numberFormat_.[[DataLocale]].
+        1. Let _dataLocaleData_ be _localeData_.[[&lt;_dataLocale_&gt;]].
+        1. Let _patterns_ be _dataLocaleData_.[[patterns]].
+        1. Assert: _patterns_ is a Record (see <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>).
+        1. Let _style_ be _numberFormat_.[[Style]].
+        1. If _style_ is `"percent"`, then
+          1. Let _patterns_ be _patterns_.[[`"percent"`]].
+        1. Else If _style_ is `"unit"`, then
+          1. Let _unit_ be _numberFormat_.[[Unit]].
+          1. Let _unitDisplay_ be _numberFormat_.[[UnitDisplay]].
+          1. Let _patterns_ be _patterns_.[[`"unit"`]].
+          1. If _patterns_.[[&lt;_unit_&gt;]] is *undefined*, then
+            1. Let _unit_ be `"fallback"`.
+          1. Let _patterns_ be _patterns_.[[&lt;_unit_&gt;]].
+          1. Let _patterns_ be _patterns_.[[&lt;_unitDisplay_&gt;]].
+        1. Else If _style_ is `"currency"`, then
+          1. Let _currency_ be _numberFormat_.[[Currency]].
+          1. Let _currencyDisplay_ be _numberFormat_.[[CurrencyDisplay]].
+          1. Let _currencySign_ be _numberFormat_.[[CurrencySign]].
+          1. Let _patterns_ be _patterns_.[[`"currency"`]].
+          1. If _patterns_.[[&lt;_currency_&gt;]] is *undefined*, then
+            1. Let _currency_ be `"fallback"`.
+          1. Let _patterns_ be _patterns_.[[&lt;_currency_&gt;]].
+          1. Let _patterns_ be _patterns_.[[&lt;_currencyDisplay_&gt;]].
+          1. Let _patterns_ be _patterns_.[[&lt;_currencySign_&gt;]].
+        1. Else,
+          1. Assert: _style_ is `"decimal"`.
+          1. Let _patterns_ be _patterns_.[[`"decimal"`]].
+        1. Let _signDisplay_ be _numberFormat_.[[SignDisplay]].
+        1. Let _patterns_ be _patterns_.[[&lt;_signDisplay_&gt;]].
+        1. Let _notation_ be _numberFormat_.[[Notation]].
+        1. Let _displayNotation_ be `"standard"`.
+        1. If _notation_ is `"scientific"` or _notation_ is `"engineering"`, then
+          1. Let _displayNotation_ be `"scientific"`.
+        1. Else If _exponent_ is not 0, then
+          1. Assert: _notation_ is `"compact"`.
+          1. Let _compactDisplay_ be _numberFormat_.[[CompactDisplay]].
+          1. If _compactDisplay_ is `"short"`, then
+            1. Let _displayNotation_ be `"compactShort"`.
+          1. Else,
+            1. Assert: _compactDisplay_ is `"long"`.
+            1. Let _displayNotation_ be `"compactLong"`.
+        1. Let _patterns_ be _patterns_.[[&lt;_displayNotation_&gt;]].
+        1. If _x_ is not *NaN* and _x_ &lt; 0 or _x_ is *-0*, then
+          1. Let _pattern_ be _patterns_.[[negativePattern]].
+        1. Else If _x_ is 0, then
+          1. Let _pattern_ be _patterns_.[[zeroPattern]].
+        1. Else,
+          1. Let _pattern_ be _patterns_.[[positivePattern]].
+        1. Return _pattern_.
+      </emu-alg>
+    </emu-clause>
+    </ins>
+
+    <ins class="block">
+    <emu-clause id="sec-computeexponent" aoid="ComputeExponent">
+      <h1>ComputeExponent ( _numberFormat_, _x_ )</h1>
+      <p>
+        The abstract operation ComputeExponent computes an exponent (power of ten) by which to scale _x_ according to the number formatting settings.  It handles cases such as 999 rounding up to 1000, requiring a different exponent.
+      </p>
+      <emu-alg>
+        1. If _x_ = 0, then
+          1. Return 0.
+        1. If _x_ &lt; 0, then
+          1. Let _x_ = -_x_.
+        1. Let _magnitude_ be the base 10 logarithm of _x_ rounded down to the nearest integer.
+        1. Let _exponent_ be ComputeExponentForMagnitude(_numberFormat_, _magnitude_).
+        1. Let _x_ be _x_ × 10<sup>-_exponent_</sup>.
+        1. Let _formatNumberResult_ be FormatNumberToString(_numberFormat_, _x_).
+        1. If _formatNumberResult_.[[RoundedNumber]] = 0, then
+          1. Return _exponent_.
+        1. Let _newMagnitude_ be the base 10 logarithm of _x_ rounded down to the nearest integer.
+        1. If _newMagnitude_ is _magnitude_ – _exponent_, then
+          1. Return _exponent_.
+        1. Return ComputeExponentForMagnitude(_numberFormat_, _magnitude_ + 1).
+      </emu-alg>
+    </emu-clause>
+    </ins>
+
+    <ins class="block">
+    <emu-clause id="sec-computeexponentformagnitude" aoid="ComputeExponentForMagnitude">
+      <h1>ComputeExponentForMagnitude ( _numberFormat_, _magnitude_ )</h1>
+      <p>
+        The abstract operation ComputeExponentHelper computes an exponent by which to scale a number of the given magnitude (power of ten of the most significant digit) according to the locale and the desired notation (scientific, engineering, or compact).
+      </p>
+      <emu-alg>
+        1. Let _notation_ be _numberFormat_.[[Notation]].
+        1. If _notation_ is `"standard"`, then
+          1. Return 0.
+        1. Else If _notation_ is `"scientific"`, then
+          1. Return _magnitude_.
+        1. Else If _notation_ is `"engineering"`, then
+          1. Let _thousands_ be the greatest integer that is not greater than _magnitude_ ÷ 3.
+          1. Return _thousands_ × 3.
+        1. Else,
+          1. Assert: _notation_ is `"compact"`.
+          1. Let _exponent_ be an implementation-dependent integer by which to scale a number of the given magnitude in compact notation for the current locale.
+          1. Return _exponent_.
+      </emu-alg>
+    </emu-clause>
+    </ins>
+  </emu-clause>
+
+  <emu-clause id="sec-intl-numberformat-constructor">
+    <h1>The Intl.NumberFormat Constructor</h1>
+
+    <p>
+      The NumberFormat constructor is the <dfn>%NumberFormat%</dfn> intrinsic object and a standard built-in property of the Intl object. Behaviour common to all service constructor properties of the Intl object is specified in <emu-xref href="#sec-internal-slots"></emu-xref>.
+    </p>
+
+    <emu-clause id="sec-intl.numberformat">
+      <h1>Intl.NumberFormat ( [ _locales_ [ , _options_ ] ] )</h1>
+
+      <p>
+        When the `Intl.NumberFormat` function is called with optional arguments _locales_ and _options_, the following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. If NewTarget is *undefined*, let _newTarget_ be the active function object, else let _newTarget_ be NewTarget.
+        1. Let _numberFormat_ be ? OrdinaryCreateFromConstructor(_newTarget_, `"%NumberFormatPrototype%"`, &laquo; [[InitializedNumberFormat]], [[Locale]], <ins>[[DataLocale]],</ins> [[NumberingSystem]], [[Style]], <ins>[[Unit]], [[UnitDisplay]],</ins> [[Currency]], [[CurrencyDisplay]], <ins>[[CurrencySign]],</ins> [[MinimumIntegerDigits]], [[MinimumFractionDigits]], [[MaximumFractionDigits]], [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], <ins>[[RoundingType]], [[Notation]], [[CompactDisplay]],</ins> [[UseGrouping]], <ins>[[SignDisplay]],</ins> <del>[[PositivePattern]], [[NegativePattern]],</del> [[BoundFormat]] &raquo;).
+        1. Perform ? InitializeNumberFormat(_numberFormat_, _locales_, _options_).
+      </emu-alg>
+      <emu-normative-optional>
+      <emu-alg>
+        4. Let _this_ be the *this* value.
+        1. If NewTarget is *undefined* and ? InstanceofOperator(_this_, %NumberFormat%) is *true*, then
+          1. Perform ? DefinePropertyOrThrow(_this_, %Intl%.[[FallbackSymbol]], PropertyDescriptor{ [[Value]]: _numberFormat_, [[Writable]]: *false*, [[Enumerable]]: *false*, [[Configurable]]: *false* }).
+          1. Return _this_.
+      </emu-alg>
+      </emu-normative-optional>
+      <emu-alg>
+        6. Return _numberFormat_.
+      </emu-alg>
+    </emu-clause>
+    <emu-note>See <emu-xref href="#legacy-constructor"></emu-xref> for the motivation of the normative optional text.</emu-note>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-constructor">
+    <h1>Properties of the Intl.NumberFormat Constructor</h1>
+
+    <p>
+      The Intl.NumberFormat constructor has the following properties:
+    </p>
+
+    <emu-clause id="sec-intl.numberformat.prototype">
+      <h1>Intl.NumberFormat.prototype</h1>
+
+      <p>
+        The value of `Intl.NumberFormat.prototype` is %NumberFormatPrototype%.
+      </p>
+      <p>
+        This property has the attributes { [[Writable]]: *false*, [[Enumerable]]: *false*, [[Configurable]]: *false* }.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.supportedlocalesof">
+      <h1>Intl.NumberFormat.supportedLocalesOf ( _locales_ [ , _options_ ] )</h1>
+
+      <p>
+        When the `supportedLocalesOf` method is called with arguments _locales_ and _options_, the following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _availableLocales_ be %NumberFormat%.[[AvailableLocales]].
+        1. Let _requestedLocales_ be ? CanonicalizeLocaleList(_locales_).
+        1. Return ? SupportedLocales(_availableLocales_, _requestedLocales_, _options_).
+      </emu-alg>
+
+      <p>
+        The value of the `length` property of the *supportedLocalesOf* method is 1.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat-internal-slots">
+      <h1>Internal slots</h1>
+
+      <p>
+        The value of the [[AvailableLocales]] internal slot is implementation defined within the constraints described in <emu-xref href="#sec-internal-slots"></emu-xref>.
+      </p>
+
+      <p>
+        The value of the [[RelevantExtensionKeys]] internal slot is &laquo; `"nu"` &raquo;.
+      </p>
+
+      <emu-note>
+        Unicode Technical Standard 35 describes two locale extension keys that are relevant to number formatting, `"nu"` for numbering system and `"cu"` for currency. Intl.NumberFormat, however, requires that the currency of a currency format is specified through the currency property in the options objects.
+      </emu-note>
+
+      <p>
+        The value of the [[LocaleData]] internal slot is implementation defined within the constraints described in <emu-xref href="#sec-internal-slots"></emu-xref> and the following additional constraints:
+      </p>
+
+      <ul>
+        <li>The list that is the value of the `"nu"` field of any locale field of [[LocaleData]] must not include the values `"native"`, `"traditio"`, or `"finance"`.</li>
+        <li>[[LocaleData]][locale] must have a patterns field for all locale values. The value of this field must be a <del>record</del><ins>Record</ins>, which must have fields with the names of the <del>three</del><ins>four</ins> number format styles: `"decimal"`, `"percent"`, `"currency"`, <ins>and `"unit"`</ins>. <del>Each of these fields in turn must be a record with the fields positivePattern and negativePattern.</del></li>
+        <li><ins class="block">The two fields `"currency"` and `"unit"` noted above must be Records with at least one field, `"fallback"`. The `"currency"` may have additional fields with keys corresponding to currency codes according to <emu-xref href="#sec-currency-codes"></emu-xref>.  Each field of `"currency"` must be a Record with fields corresponding to the possible currencyDisplay values: `"code"`, `"symbol"`, `"narrowSymbol"`, and `"name"`.  Each of those fields must contain a Record with fields corresponding to the possible currencySign values: `"standard"` or `"accounting"`.  The `"unit"` field (of [[LocaleData]][locale]) may have additional fields beyond the required field `"fallback"` with keys corresponding to measurement core unit identifiers corresponding to <emu-xref href="#sec-measurement-unit-identifiers"></emu-xref>.  Each field of `"unit"` must be a Record with fields corresponding to the possible unitDisplay values: `"narrow"`, `"short"`, and `"long"`.</ins></li>
+        <li><ins class="block">All of the leaf fields so far described for the patterns tree (`"decimal"`, `"percent"`, great-grandchildren of `"currency"`, and grandchildren of `"unit"`) must be Records with fields corresponding to the possible signDisplay values: `"auto"`, `"always"`, `"never"`, and `"exceptZero"`.  Each of these fields must be a Record with the keys `"standard"`, `"scientific"`, `"compactShort"`, and `"compactLong"`.  Each of these fields must be a Record with the keys `"positivePattern"`, `"zeroPattern"`, and `"negativePattern"`.</ins></li>
+        <li>The value of <del>these fields</del> <ins>the aforementioned fields (the sign-dependent pattern fields)</ins> must be string values that must contain the substring `"{number}"` and may contain the substrings `"{plusSign}"`, <del>and</del> `"{minusSign}"`<ins>, `"{compactSymbol}"`, `"{compactName}"`, `"{scientificSeparator}"`, and `"{scientificExponent}"`</ins>; the values within the <del>percent</del><ins>`"percent"`</ins> field must also contain the substring `"{percentSign}"`; the values within the <del>currency</del><ins>`"currency"`</ins> field must also contain <del>the substring `"{currency}"`</del> <ins>one of the following substrings: `"{currencyCode}"`, `"{currencySymbol}"`, `"{currencyNarrowSymbol}"`, or `"{currencyName}"`; and the values within the `"unit"` field must also contain one of the following substrings: `"{unitSymbol}"`, `"{unitNarrowSymbol}"`, or `"{unitName}"`</ins>. The pattern strings must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.</li>
+      </ul>
+
+      <emu-note>
+        It is recommended that implementations use the locale data provided by the Common Locale Data Repository (available at <a href="http://cldr.unicode.org/">http://cldr.unicode.org/</a>).
+      </emu-note>
+    </emu-clause>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-prototype-object">
+    <h1>Properties of the Intl.NumberFormat Prototype Object</h1>
+
+    <p>
+      The Intl.NumberFormat prototype object is itself an ordinary object. <dfn>%NumberFormatPrototype%</dfn> is not an Intl.NumberFormat instance and does not have an [[InitializedNumberFormat]] internal slot or any of the other internal slots of Intl.NumberFormat instance objects.
+    </p>
+
+    <emu-clause id="sec-intl.numberformat.prototype.constructor">
+      <h1>Intl.NumberFormat.prototype.constructor</h1>
+
+      <p>
+        The initial value of `Intl.NumberFormat.prototype.constructor` is the intrinsic object %NumberFormat%.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype-@@tostringtag">
+      <h1>Intl.NumberFormat.prototype [ @@toStringTag ]</h1>
+
+      <p>
+        The initial value of the @@toStringTag property is the string value `"Object"`.
+      </p>
+      <p>
+        This property has the attributes { [[Writable]]: *false*, [[Enumerable]]: *false*, [[Configurable]]: *true* }.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.format">
+      <h1>get Intl.NumberFormat.prototype.format</h1>
+
+      <p>
+        Intl.NumberFormat.prototype.format is an accessor property whose set accessor function is *undefined*. Its get accessor function performs the following steps:
+      </p>
+
+      <emu-alg>
+        1. Let _nf_ be the *this* value.
+        1. If Type(_nf_) is not Object, throw a *TypeError* exception.
+        1. Let _nf_ be ? UnwrapNumberFormat(_nf_).
+        1. If _nf_.[[BoundFormat]] is *undefined*, then
+          1. Let _F_ be a new built-in function object as defined in Number Format Functions (<emu-xref href="#sec-number-format-functions"></emu-xref>).
+          1. Set _F_.[[NumberFormat]] to _nf_.
+          1. Set _nf_.[[BoundFormat]] to _F_.
+        1. Return _nf_.[[BoundFormat]].
+      </emu-alg>
+
+      <emu-note>
+        The returned function is bound to _nf_ so that it can be passed directly to `Array.prototype.map` or other functions.
+        This is considered a historical artefact, as part of a convention which is no longer followed for new features, but is preserved to maintain compatibility with existing programs.
+      </emu-note>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.formattoparts">
+      <h1>Intl.NumberFormat.prototype.formatToParts ( _value_ )</h1>
+
+      <p>
+        When the `formatToParts` method is called with an optional argument _value_, the following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _nf_ be the *this* value.
+        1. If Type(_nf_) is not Object, throw a *TypeError* exception.
+        1. If _nf_ does not have an [[InitializedNumberFormat]] internal slot, throw a *TypeError* exception.
+        1. Let _x_ be ? ToNumber(_value_).
+        1. Return ? FormatNumberToParts(_nf_, _x_).
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.resolvedoptions">
+      <h1>Intl.NumberFormat.prototype.resolvedOptions ()</h1>
+
+      <p>
+        This function provides access to the locale and formatting options computed during initialization of the object.
+      </p>
+
+      <emu-alg>
+        1. Let _nf_ be *this* value.
+        1. If Type(_nf_) is not Object, throw a *TypeError* exception.
+        1. Let _nf_ be ? UnwrapNumberFormat(_nf_).
+        1. Let _options_ be ! ObjectCreate(%ObjectPrototype%).
+        1. For each row of <emu-xref href="#table-numberformat-resolvedoptions-properties"></emu-xref>, except the header row, in table order, do
+          1. Let _p_ be the Property value of the current row.
+          1. Let _v_ be the value of _nf_'s internal slot whose name is the Internal Slot value of the current row.
+          1. If _v_ is not *undefined*, then
+            1. Perform ! CreateDataPropertyOrThrow(_options_, _p_, _v_).
+        1. Return _options_.
+      </emu-alg>
+
+      <emu-table id="table-numberformat-resolvedoptions-properties">
+        <emu-caption>Resolved Options of NumberFormat Instances</emu-caption>
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Internal Slot</th>
+              <th>Property</th>
+            </tr>
+          </thead>
+          <tr>
+            <td>[[Locale]]</td>
+            <td>`"locale"`</td>
+          </tr>
+          <tr>
+            <td>[[NumberingSystem]]</td>
+            <td>`"numberingSystem"`</td>
+          </tr>
+          <tr>
+            <td>[[Style]]</td>
+            <td>`"style"`</td>
+          </tr>
+          <tr>
+            <td>[[Currency]]</td>
+            <td>`"currency"`</td>
+          </tr>
+          <tr>
+            <td>[[CurrencyDisplay]]</td>
+            <td>`"currencyDisplay"`</td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[CurrencySign]]</ins></td>
+            <td><ins class="block">`"currencySign"`</ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[Unit]]</ins></td>
+            <td><ins class="block">`"unit"`</ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[UnitDisplay]]</ins></td>
+            <td><ins class="block">`"unitDisplay"`</ins></td>
+          </tr>
+          <tr>
+            <td>[[MinimumIntegerDigits]]</td>
+            <td>`"minimumIntegerDigits"`</td>
+          </tr>
+          <tr>
+            <td>[[MinimumFractionDigits]]</td>
+            <td>`"minimumFractionDigits"`</td>
+          </tr>
+          <tr>
+            <td>[[MaximumFractionDigits]]</td>
+            <td>`"maximumFractionDigits"`</td>
+          </tr>
+          <tr>
+            <td>[[MinimumSignificantDigits]]</td>
+            <td>`"minimumSignificantDigits"`</td>
+          </tr>
+          <tr>
+            <td>[[MaximumSignificantDigits]]</td>
+            <td>`"maximumSignificantDigits"`</td>
+          </tr>
+          <tr>
+            <td>[[UseGrouping]]</td>
+            <td>`"useGrouping"`</td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[Notation]]</ins></td>
+            <td><ins class="block">`"notation"`</ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[CompactDisplay]]</ins></td>
+            <td><ins class="block">`"compactDisplay"`</ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[SignDisplay]]</ins></td>
+            <td><ins class="block">`"signDisplay"`</ins></td>
+          </tr>
+        </table>
+      </emu-table>
+    </emu-clause>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-instances">
+    <h1>Properties of Intl.NumberFormat Instances</h1>
+
+    <p>
+      Intl.NumberFormat instances inherit properties from %NumberFormatPrototype%.
+    </p>
+
+    <p>
+      Intl.NumberFormat instances have an [[InitializedNumberFormat]] internal slot.
+    </p>
+
+    <p>
+      Intl.NumberFormat instances also have several internal slots that are computed by the constructor:
+    </p>
+
+    <ul>
+      <li>[[Locale]] is a String value with the language tag of the locale whose localization is used for formatting.</li>
+      <li><ins class="block">[[DataLocale]] is a String value with the language tag of the nearest locale for which the implementation has data to perform the formatting operation. It will be a parent locale of [[Locale]].</ins></li>
+      <li>[[NumberingSystem]] is a String value with the "type" given in Unicode Technical Standard 35 for the numbering system used for formatting.</li>
+      <li>[[Style]] is one of the String values `"decimal"`, `"currency"`, <del>or</del> `"percent"`<ins>, or `"unit"`</ins>, identifying <del>the number format style used</del><ins>the type of quantity being measured</ins>.</li>
+      <li>[[Currency]] is a String value with the currency code identifying the currency to be used if formatting with the `"currency"` <del>style</del><ins>unit type</ins>. It is only used when [[Style]] has the value `"currency"`.</li>
+      <li>[[CurrencyDisplay]] is one of the String values `"code"`, `"symbol"`, <ins>`"narrowSymbol"`,</ins> or `"name"`, specifying whether to display the currency as an ISO 4217 alphabetic currency code, a localized currency symbol, or a localized currency name if formatting with the `"currency"` style. It is only used when [[Style]] has the value `"currency"`.</li>
+      <li><ins class="block">[[CurrencySign]] is one of the String values `"standard"` or `"accounting"`, specifying whether to render negative numbers in accounting format, often signified by parenthesis. It is only used when [[Style]] has the value `"currency"` and when [[SignDisplay]] is not `"never"`.</ins></li>
+      <li><ins class="block">[[Unit]] is a core unit identifier, as defined by Unicode Technical Standard #35, Part 2, Section 6. It is only used when [[Style]] has the value `"unit"`.</ins></li>
+      <li><ins class="block">[[UnitDisplay]] is one of the String values `"short"`, `"narrow"`, or `"long"`, specifying whether to display the unit as a symbol, narrow symbol, or localized long name if formatting with the `"unit"` style. It is only used when [[Style]] has the value `"unit"`.</ins></li>
+      <li>[[MinimumIntegerDigits]] is a non-negative integer Number value indicating the minimum integer digits to be used. Numbers will be padded with leading zeroes if necessary.</li>
+      <li>[[MinimumFractionDigits]] and [[MaximumFractionDigits]] are non-negative integer Number values indicating the minimum and maximum fraction digits to be used. Numbers will be rounded or padded with trailing zeroes if necessary. <ins>These properties are only used when [[RoundingType]] is `"fractionDigits"`.</ins></li>
+      <li>[[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] are positive integer Number values indicating the minimum and maximum fraction digits to be shown. <del>Either none or both of these properties are present; if they are, they override minimum and maximum integer and fraction digits –</del> <ins>If present,</ins> the formatter uses however many <del>integer and</del> fraction digits are required to display the specified number of significant digits. <ins>These properties are only used when [[RoundingType]] is `"significantDigits"`.</ins></li>
+      <li>[[UseGrouping]] is a Boolean value indicating whether a grouping separator should be used.</li>
+      <li><ins class="block">[[RoundingType]] is one of the String values `"fractionDigits"`, `"significantDigits"`, or `"compactRounding"`, indicating which rounding strategy to use. If `"fractionDigits"`, the number is rounded according to [[MinimumFractionDigits]] and [[MaximumFractionDigits]], as described above. If `"significantDigits"`, the number is rounded according to [[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] as described above. If `"compactRounding"`, the number is rounded to 1 maximum fraction digit if there is 1 digit before the decimal separator, and otherwise round to 0 fraction digits.</ins></li>
+      <li><ins class="block">[[Notation]]  is one of the String values `"standard"`, `"scientific"`, `"engineering"`, or `"compact"`, specifying whether the number should be displayed without scaling, scaled to the units place with the power of ten in scientific notation, scaled to the nearest thousand with the power of ten in scientific notation, or scaled to the nearest locale-dependent compact decimal notation power of ten with the corresponding compact decimal notation affix.</ins></li>
+      <li><ins class="block">[[CompactDisplay]] is one of the String values `"short"` or `"long"`, specifying whether to display compact notation affixes in short form ("5K") or long form ("5 thousand") if formatting with the `"compact"` notation. It is only used when [[Notation]] has the value `"compact"`.</ins></li>
+      <li><ins class="block">[[SignDisplay]] is one of the String values `"auto"`, `"always"`, `"never"`, or `"exceptZero"`, specifying whether to show the sign on negative numbers only, positive and negative numbers including zero, neither positive nor negative numbers, or positive and negative numbers but not zero.</ins></li>
+      <li><del class="block">[[PositivePattern]] and [[NegativePattern]] are String values as described in <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>.</del></li>
+    </ul>
+
+    <p>
+      Finally, Intl.NumberFormat instances have a [[BoundFormat]] internal slot that caches the function returned by the format accessor (<emu-xref href="#sec-intl.numberformat.prototype.format"></emu-xref>).
+    </p>
+  </emu-clause>
+</emu-clause>
diff --git a/section11/numberformat_diff_out.html b/section11/numberformat_diff_out.html
new file mode 100644
index 0000000..629678b
--- /dev/null
+++ b/section11/numberformat_diff_out.html
@@ -0,0 +1,2419 @@
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+          var tocRect = this.$toc.getBoundingClientRect();
+          if (rect.top + 10 > tocRect.bottom) {
+            this.$toc.scrollTop = this.$toc.scrollTop + (rect.top - tocRect.bottom) + (rect.bottom - rect.top);
+          } else if (rect.top < tocRect.top) {
+            this.$toc.scrollTop = this.$toc.scrollTop - (tocRect.top - rect.top);
+          }
+        }
+        current = children[i].querySelector('ol');
+        index++;
+        break;
+      }      
+    }
+    
+  }
+}
+
+function findActiveClause(root, path) {
+  var clauses = new ClauseWalker(root);
+  var $clause;
+  var found = false;
+  var path = path || [];
+  
+  while ($clause = clauses.nextNode()) {
+    var rect = $clause.getBoundingClientRect();
+    var $header = $clause.children[0];
+    var marginTop = parseInt(getComputedStyle($header)["margin-top"]);
+    
+    if ((rect.top - marginTop) <= 0 && rect.bottom > 0) {
+      found = true;
+      return findActiveClause($clause, path.concat($clause)) || path;
+    }
+  }
+  
+  return path;
+}
+
+function ClauseWalker(root) {
+  var previous;
+  var treeWalker = document.createTreeWalker(
+    root,
+    NodeFilter.SHOW_ELEMENT,
+    {
+      acceptNode: function (node) {
+        if (previous === node.parentNode) {
+          return NodeFilter.FILTER_REJECT;
+        } else {
+          previous = node;
+        }
+        if (node.nodeName === 'EMU-CLAUSE' || node.nodeName === 'EMU-INTRO' || node.nodeName === 'EMU-ANNEX') {
+          return NodeFilter.FILTER_ACCEPT;
+        } else {
+          return NodeFilter.FILTER_SKIP;
+        }
+      }
+    },
+    false
+    );
+  
+  return treeWalker;
+}
+
+Menu.prototype.toggle = function () {
+  this.$menu.classList.toggle('active');
+}
+
+Menu.prototype.show = function () {
+  this.$menu.classList.add('active');
+}
+
+Menu.prototype.hide = function () {
+  this.$menu.classList.remove('active');
+}
+
+Menu.prototype.isVisible = function() {
+  return this.$menu.classList.contains('active');
+}
+
+Menu.prototype.showPins = function () {
+  this.$pins.classList.add('active');
+}
+
+Menu.prototype.hidePins = function () {
+  this.$pins.classList.remove('active');
+}
+
+Menu.prototype.addPinEntry = function (id) {
+  var entry = this.search.biblio.byId[id];
+  if (!entry) {
+    // id was deleted after pin (or something) so remove it
+    delete this._pinnedIds[id];
+    this.persistPinEntries();
+    return;
+  }
+
+  if (entry.type === 'clause') {
+    var prefix;
+    if (entry.number) {
+      prefix = entry.number + ' ';
+    } else {
+      prefix = '';
+    }
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + prefix + entry.titleHTML + '</a></li>';
+  } else {
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + entry.key + '</a></li>';
+  }
+
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.showPins();
+  }
+  this._pinnedIds[id] = true;
+  this.persistPinEntries();
+}
+
+Menu.prototype.removePinEntry = function (id) {
+  var item = this.$pinList.querySelector('a[href="#' + id + '"]').parentNode;
+  this.$pinList.removeChild(item);
+  delete this._pinnedIds[id];
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.hidePins();
+  }
+
+  this.persistPinEntries();
+}
+
+Menu.prototype.persistPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+
+  localStorage.pinEntries = JSON.stringify(Object.keys(this._pinnedIds));
+}
+
+Menu.prototype.loadPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+  
+  var pinsString = window.localStorage.pinEntries;
+  if (!pinsString) return;
+  var pins = JSON.parse(pinsString);
+  for(var i = 0; i < pins.length; i++) {
+    this.addPinEntry(pins[i]);
+  }
+}
+
+Menu.prototype.togglePinEntry = function (id) {
+  if (!id) {
+    id = this.$activeClause[this.$activeClause.length - 1].id;
+  }
+
+  if (this._pinnedIds[id]) {
+    this.removePinEntry(id);
+  } else {
+    this.addPinEntry(id);
+  }
+}
+
+Menu.prototype.selectPin = function (num) {
+  document.location = this.$pinList.children[num].children[0].href;
+}
+
+var menu;
+function init() {
+  menu = new Menu();
+  var $container = document.getElementById('spec-container');
+  $container.addEventListener('mouseover', debounce(function (e) {
+    Toolbox.activateIfMouseOver(e);
+  }));
+}
+
+document.addEventListener('DOMContentLoaded', init);
+
+function debounce(fn, opts) {
+  opts = opts || {};
+  var timeout;
+  return function(e) {
+    if (opts.stopPropagation) {
+      e.stopPropagation();
+    }
+    var args = arguments;
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+    timeout = setTimeout(function() {
+      timeout = null;
+      fn.apply(this, args);
+    }.bind(this), 150);
+  }
+}
+
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+
+
+
+
+// The following license applies to the fuzzysearch function
+// The MIT License (MIT)
+// Copyright © 2015 Nicolas Bevacqua
+// Copyright © 2016 Brian Terlson
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+function fuzzysearch (searchString, haystack, caseInsensitive) {
+  var tlen = haystack.length;
+  var qlen = searchString.length;
+  var chunks = 1;
+  var finding = false;
+  var prefix = true;
+  
+  if (qlen > tlen) {
+    return false;
+  }
+  
+  if (qlen === tlen) {
+    if (searchString === haystack) {
+      return { caseMatch: true, chunks: 1, prefix: true };
+    } else if (searchString.toLowerCase() === haystack.toLowerCase()) {
+      return { caseMatch: false, chunks: 1, prefix: true };
+    } else {
+      return false;
+    }
+  }
+  
+  outer: for (var i = 0, j = 0; i < qlen; i++) {
+    var nch = searchString[i];
+    while (j < tlen) {
+      var targetChar = haystack[j++];
+      if (targetChar === nch) {
+        finding = true;
+        continue outer;
+      }
+      if (finding) {
+        chunks++;
+        finding = false;
+      }
+    }
+    
+    if (caseInsensitive) { return false }
+    
+    return fuzzysearch(searchString.toLowerCase(), haystack.toLowerCase(), true);
+  }
+  
+  return { caseMatch: !caseInsensitive, chunks: chunks, prefix: j <= qlen };
+}
+
+var Toolbox = {
+  init: function () {
+    this.$container = document.createElement('div');
+    this.$container.classList.add('toolbox');
+    this.$permalink = document.createElement('a');
+    this.$permalink.textContent = 'Permalink';
+    this.$pinLink = document.createElement('a');
+    this.$pinLink.textContent = 'Pin';
+    this.$pinLink.setAttribute('href', '#');
+    this.$pinLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      menu.togglePinEntry(this.entry.id);
+    }.bind(this));
+
+    this.$refsLink = document.createElement('a');
+    this.$refsLink.setAttribute('href', '#');
+    this.$refsLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      referencePane.showReferencesFor(this.entry);
+    }.bind(this));
+    this.$container.appendChild(this.$permalink);
+    this.$container.appendChild(this.$pinLink);
+    this.$container.appendChild(this.$refsLink);
+    document.body.appendChild(this.$container);
+  },
+
+  activate: function (el, entry, target) {
+    if (el === this._activeEl) return;
+    this.active = true;
+    this.entry = entry;
+    this.$container.classList.add('active');
+    this.top = el.offsetTop - this.$container.offsetHeight - 10;
+    this.left = el.offsetLeft;
+    this.$container.setAttribute('style', 'left: ' + this.left + 'px; top: ' + this.top + 'px');
+    this.updatePermalink();
+    this.updateReferences();
+    this._activeEl = el;
+    if (this.top < document.body.scrollTop && el === target) {
+      // don't scroll unless it's a small thing (< 200px)
+      this.$container.scrollIntoView();
+    }
+  },
+
+  updatePermalink: function () {
+    this.$permalink.setAttribute('href', '#' + this.entry.id);
+  },
+
+  updateReferences: function () {
+    this.$refsLink.textContent = 'References (' + this.entry.referencingIds.length + ')';
+  },
+
+  activateIfMouseOver: function (e) {
+    var ref = this.findReferenceUnder(e.target);
+    if (ref && (!this.active || e.pageY > this._activeEl.offsetTop)) {
+      var entry = menu.search.biblio.byId[ref.id];
+      this.activate(ref.element, entry, e.target);
+    } else if (this.active && ((e.pageY < this.top) || e.pageY > (this._activeEl.offsetTop + this._activeEl.offsetHeight))) {
+      this.deactivate();
+    }
+  },
+
+  findReferenceUnder: function (el) {
+    while (el) {
+      var parent = el.parentNode;
+      if (el.nodeName === 'H1' && parent.nodeName.match(/EMU-CLAUSE|EMU-ANNEX|EMU-INTRO/) && parent.id) {
+        return { element: el, id: parent.id };
+      } else if (el.nodeName.match(/EMU-(?!CLAUSE|XREF|ANNEX|INTRO)|DFN/) &&
+                el.id && el.id[0] !== '_') {
+        if (el.nodeName === 'EMU-FIGURE' || el.nodeName === 'EMU-TABLE' || el.nodeName === 'EMU-EXAMPLE') {
+          // return the figcaption element
+          return { element: el.children[0].children[0], id: el.id };
+        } else if (el.nodeName === 'EMU-PRODUCTION') {
+          // return the LHS non-terminal element
+          return { element: el.children[0], id: el.id };
+        } else {
+          return { element: el, id: el.id };
+        }
+      }
+      el = parent;
+    }
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+    this._activeEl = null;
+    this.activeElBounds = null;
+    this.active = false;
+  }
+}
+
+var referencePane = {
+  init: function() {
+    this.$container = document.createElement('div');
+    this.$container.setAttribute('id', 'references-pane-container');
+
+    var $spacer = document.createElement('div');
+    $spacer.setAttribute('id', 'references-pane-spacer');
+
+    this.$pane = document.createElement('div');
+    this.$pane.setAttribute('id', 'references-pane');
+
+    this.$container.appendChild($spacer);
+    this.$container.appendChild(this.$pane);
+
+    this.$header = document.createElement('div');
+    this.$header.classList.add('menu-pane-header');
+    this.$header.textContent = 'References to ';
+    this.$headerRefId = document.createElement('a');
+    this.$header.appendChild(this.$headerRefId);
+    this.$closeButton = document.createElement('span');
+    this.$closeButton.setAttribute('id', 'references-pane-close');
+    this.$closeButton.addEventListener('click', function (e) {
+      this.deactivate();
+    }.bind(this));
+    this.$header.appendChild(this.$closeButton);
+
+    this.$pane.appendChild(this.$header);
+    var tableContainer = document.createElement('div');
+    tableContainer.setAttribute('id', 'references-pane-table-container');
+
+    this.$table = document.createElement('table');
+    this.$table.setAttribute('id', 'references-pane-table');
+
+    this.$tableBody = this.$table.createTBody();
+
+    tableContainer.appendChild(this.$table);
+    this.$pane.appendChild(tableContainer);
+
+    menu.$specContainer.appendChild(this.$container);
+  },
+
+  activate: function () {
+    this.$container.classList.add('active');
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+  },
+
+  showReferencesFor(entry) {
+    this.activate();
+    var newBody = document.createElement('tbody');
+    var previousId;
+    var previousCell;
+    var dupCount = 0;
+    this.$headerRefId.textContent = '#' + entry.id;
+    this.$headerRefId.setAttribute('href', '#' + entry.id);
+    entry.referencingIds.map(function (id) {
+      var target = document.getElementById(id);
+      var cid = findParentClauseId(target);
+      var clause = menu.search.biblio.byId[cid];
+      var dupCount = 0;
+      return { id: id, clause: clause }
+    }).sort(function (a, b) {
+      return sortByClauseNumber(a.clause, b.clause);
+    }).forEach(function (record, i) {
+      if (previousId === record.clause.id) {
+        previousCell.innerHTML += ' (<a href="#' + record.id + '">' + (dupCount + 2) + '</a>)';
+        dupCount++;
+      } else {
+        var row = newBody.insertRow();
+        var cell = row.insertCell();
+        cell.innerHTML = record.clause.number;
+        cell = row.insertCell();
+        cell.innerHTML = '<a href="#' + record.id + '">' + record.clause.titleHTML + '</a>';
+        previousCell = cell;
+        previousId = record.clause.id;
+        dupCount = 0;
+      }
+    }, this);
+    this.$table.removeChild(this.$tableBody);
+    this.$tableBody = newBody;
+    this.$table.appendChild(this.$tableBody);
+  }
+}
+function findParentClauseId(node) {
+  while (node && node.nodeName !== 'EMU-CLAUSE' && node.nodeName !== 'EMU-INTRO' && node.nodeName !== 'EMU-ANNEX') {
+    node = node.parentNode;
+  }
+  if (!node) return null;
+  return node.getAttribute('id');
+}
+
+function sortByClauseNumber(c1, c2) {
+  var c1c = c1.number.split('.');
+  var c2c = c2.number.split('.');
+
+  for (var i = 0; i < c1c.length; i++) {
+    if (i >= c2c.length) {
+      return 1;
+    }
+    
+    var c1 = c1c[i];
+    var c2 = c2c[i];
+    var c1cn = Number(c1);
+    var c2cn = Number(c2);
+
+    if (Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      if (c1 > c2) {
+        return 1;
+      } else if (c1 < c2) {
+        return -1;
+      }
+    } else if (!Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      return -1;
+    } else if (Number.isNaN(c1cn) && !Number.isNaN(c2cn)) {
+      return 1;
+    } else if(c1cn > c2cn) {
+      return 1;
+    } else if (c1cn < c2cn) {
+      return -1;
+    }
+  }
+
+  if (c1c.length === c2c.length) {
+    return 0;
+  }
+  return -1;
+}
+
+document.addEventListener('DOMContentLoaded', function () {
+  Toolbox.init();
+  referencePane.init();
+})
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+</script><style>body {
+  display: flex;
+  font-size: 18px;
+  line-height: 1.5;
+  font-family: Cambria, Palatino Linotype, Palatino, Liberation Serif, serif;
+  padding: 0;
+  margin: 0;
+  color: #111;
+}
+
+#spec-container {
+  padding: 0 20px;
+  flex-grow: 1;
+  flex-basis: 66%;
+  box-sizing: border-box;
+  overflow: hidden;
+}
+
+body.oldtoc {
+  margin: 0 auto;
+}
+
+a {
+    text-decoration: none;
+    color: #206ca7;
+}
+
+a:visited {
+  color: #206ca7;
+}
+
+a:hover {
+    text-decoration: underline;
+    color: #239dee;
+}
+
+
+code {
+    font-weight: bold;
+    font-family: Consolas, Monaco, monospace;
+    white-space: pre;
+}
+
+pre code {
+  font-weight: inherit;
+}
+
+pre code.hljs {
+  background-color: #fff;
+  margin: 0;
+  padding: 0;
+}
+
+ol.toc {
+    list-style: none;
+    padding-left: 0;
+}
+
+ol.toc ol.toc {
+    padding-left: 2ex;
+    list-style: none;
+}
+
+var {
+  color: #2aa198;
+  transition: background-color 0.25s ease;
+  cursor: pointer;
+}
+
+var.referenced {
+  background-color: #ffff33;
+}
+
+emu-const {
+  font-family: sans-serif;
+}
+
+emu-val {
+  font-weight: bold;
+}
+emu-alg ol, emu-alg ol ol ol ol {
+    list-style-type: decimal;
+}
+
+emu-alg ol ol, emu-alg ol ol ol ol ol {
+    list-style-type: lower-alpha;
+}
+
+emu-alg ol ol ol, ol ol ol ol ol ol {
+    list-style-type: lower-roman;
+}
+
+emu-eqn {
+  display: block;
+  margin-left: 4em;
+}
+
+emu-eqn.inline {
+  display: inline;
+  margin: 0;
+}
+
+emu-eqn div:first-child {
+  margin-left: -2em;
+}
+
+emu-note {
+    margin: 1em 0;
+    color: #666;
+    border-left: 5px solid #ccc;
+    display: flex;
+    flex-direction: row;
+}
+
+emu-note > span.note {
+    flex-basis: 100px;
+    min-width: 100px;
+    flex-grow: 0;
+    flex-shrink: 1;
+    text-transform: uppercase;
+    padding-left: 5px;
+}
+
+emu-note[type=editor] {
+  border-left-color: #faa;
+}
+
+emu-note > div.note-contents {
+  flex-grow: 1;
+  flex-shrink: 1;
+}
+
+emu-note > div.note-contents > p:first-of-type {
+  margin-top: 0;
+}
+
+emu-note > div.note-contents > p:last-of-type {
+  margin-bottom: 0;
+}
+
+emu-figure {
+  display: block;
+}
+
+emu-example {
+  display: block;
+  margin: 1em 3em;
+}
+
+emu-example figure figcaption {
+  margin-top: 0.5em;
+  text-align: left;
+}
+
+emu-figure figure,
+emu-example figure,
+emu-table figure {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+emu-production {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 1em;
+    margin-left: 5ex;
+}
+
+emu-grammar.inline, emu-production.inline,
+emu-grammar.inline emu-production emu-rhs, emu-production.inline emu-rhs,
+emu-grammar[collapsed] emu-production emu-rhs, emu-production[collapsed] emu-rhs {
+    display: inline;
+    padding-left: 1ex;
+    margin-left: 0;
+}
+
+emu-grammar[collapsed] emu-production, emu-production[collapsed] {
+    margin: 0;
+}
+
+emu-constraints {
+    font-size: .75em;
+    margin-right: 1ex;
+}
+
+emu-gann {
+    margin-right: 1ex;
+}
+
+emu-gann emu-t:last-child,
+emu-gann emu-nt:last-child {
+    margin-right: 0;
+}
+
+emu-geq {
+    margin-left: 1ex;
+    font-weight: bold;
+}
+
+emu-oneof {
+    font-weight: bold;
+    margin-left: 1ex;
+}
+
+emu-nt {
+    display: inline-block;
+    font-style: italic;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-nt a, emu-nt a:visited {
+  color: #333;
+}
+
+emu-rhs emu-nt {
+    margin-right: 1ex;
+}
+
+emu-t {
+    display: inline-block;
+    font-family: monospace;
+    font-weight: bold;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-production emu-t {
+    margin-right: 1ex;
+}
+
+emu-rhs {
+    display: block;
+    padding-left: 75px;
+    text-indent: -25px;
+}
+
+emu-mods {
+    font-size: .85em;
+    vertical-align: sub;
+    font-style: normal;
+    font-weight: normal;
+}
+
+emu-production[collapsed] emu-mods {
+  display: none;
+}
+
+emu-params, emu-opt {
+  margin-right: 1ex;
+  font-family: monospace;
+}
+
+emu-params, emu-constraints {
+  color: #2aa198;
+}
+
+emu-opt {
+  color: #b58900;
+}
+
+emu-gprose {
+    font-size: 0.9em;
+    font-family: Helvetica, Arial, sans-serif;
+}
+
+h1.shortname {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.version {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.title {
+  margin-top: 0;
+  color: #f60;
+}
+
+h1.first {
+  margin-top: 0;
+}
+
+h1, h2, h3, h4, h5, h6 {
+    position: relative;
+}
+
+h1 .secnum {
+  text-decoration: none;
+  margin-right: 10px;
+}
+
+h1 span.title {
+  order: 2;
+}
+
+
+h1 { font-size: 2.67em; margin-top: 2em; margin-bottom: 0; line-height: 1em;}
+h2 { font-size: 2em; }
+h3 { font-size: 1.56em; }
+h4 { font-size: 1.25em; }
+h5 { font-size: 1.11em; }
+h6 { font-size: 1em; }
+
+h1:hover span.utils {
+  display: block;
+}
+
+span.utils {
+  font-size: 18px;
+  line-height: 18px;
+  display: none;
+  position: absolute;
+  top: 100%;
+  left: 0;
+  right: 0;
+  font-weight: normal;
+}
+
+span.utils:before {
+    content: "⤷";
+    display: inline-block;
+    padding: 0 5px;
+}
+
+span.utils > * {
+  display: inline-block;
+  margin-right: 20px;
+}
+
+h1 span.utils span.anchor a,
+h2 span.utils span.anchor a,
+h3 span.utils span.anchor a,
+h4 span.utils span.anchor a,
+h5 span.utils span.anchor a,
+h6 span.utils span.anchor a {
+  text-decoration: none;
+  font-variant: small-caps;
+}
+
+h1 span.utils span.anchor a:hover,
+h2 span.utils span.anchor a:hover,
+h3 span.utils span.anchor a:hover,
+h4 span.utils span.anchor a:hover,
+h5 span.utils span.anchor a:hover,
+h6 span.utils span.anchor a:hover {
+  color: #333;
+}
+
+emu-intro h1, emu-clause h1, emu-annex h1 { font-size: 2em; }
+emu-intro h2, emu-clause h2, emu-annex h2 { font-size: 1.56em; }
+emu-intro h3, emu-clause h3, emu-annex h3 { font-size: 1.25em; }
+emu-intro h4, emu-clause h4, emu-annex h4 { font-size: 1.11em; }
+emu-intro h5, emu-clause h5, emu-annex h5 { font-size: 1em; }
+emu-intro h6, emu-clause h6, emu-annex h6 { font-size: 0.9em; }
+emu-intro emu-intro h1, emu-clause emu-clause h1, emu-annex emu-annex h1 { font-size: 1.56em; }
+emu-intro emu-intro h2, emu-clause emu-clause h2, emu-annex emu-annex h2 { font-size: 1.25em; }
+emu-intro emu-intro h3, emu-clause emu-clause h3, emu-annex emu-annex h3 { font-size: 1.11em; }
+emu-intro emu-intro h4, emu-clause emu-clause h4, emu-annex emu-annex h4 { font-size: 1em; }
+emu-intro emu-intro h5, emu-clause emu-clause h5, emu-annex emu-annex h5 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex h1 { font-size: 1.25em; }
+emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex h2 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex h3 { font-size: 1em; }
+emu-intro emu-intro emu-intro h4, emu-clause emu-clause emu-clause h4, emu-annex emu-annex emu-annex h4 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex h2 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex emu-annex h3 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex emu-annex h2 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 0.9em }
+
+emu-clause, emu-intro, emu-annex {
+    display: block;
+}
+
+/* Figures and tables */
+figure { display: block; margin: 1em 0 3em 0; }
+figure object { display: block; margin: 0 auto; }
+figure table.real-table { margin: 0 auto; }
+figure figcaption {
+    display: block;
+    color: #555555;
+    font-weight: bold;
+    text-align: center;
+}
+
+emu-table table {
+  margin: 0 auto;
+}
+
+emu-table table, table.real-table {
+    border-collapse: collapse;
+}
+
+emu-table td, emu-table th, table.real-table td, table.real-table th {
+    border: 1px solid black;
+    padding: 0.4em;
+    vertical-align: baseline;
+}
+emu-table th, emu-table thead td, table.real-table th {
+    background-color: #eeeeee;
+}
+
+/* Note: the left content edges of table.lightweight-table >tbody >tr >td
+   and div.display line up. */
+table.lightweight-table {
+    border-collapse: collapse;
+    margin: 0 0 0 1.5em;
+}
+table.lightweight-table td, table.lightweight-table th {
+    border: none;
+    padding: 0 0.5em;
+    vertical-align: baseline;
+}
+
+/* diff styles */
+ins {
+    background-color: #e0f8e0;
+    text-decoration: none;
+    border-bottom: 1px solid #396;
+}
+
+del {
+    background-color: #fee;
+}
+
+ins.block, del.block,
+emu-production > ins, emu-production > del,
+emu-grammar > ins, emu-grammar > del {
+  display: block;
+}
+emu-rhs > ins, emu-rhs > del { 
+  display: inline;
+}
+
+tr.ins > td > ins {
+  border-bottom: none;
+}
+
+tr.ins > td {
+  background-color: #e0f8e0;
+}
+
+tr.del > td {
+  background-color: #fee;
+}
+
+/* Menu Styles */
+#menu-toggle {
+  font-size: 2em;
+
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 1.5em;
+  height: 1.5em;
+  z-index: 3;
+  visibility: hidden;
+  color: #1567a2;
+  background-color: #fff;
+
+  line-height: 1.5em;
+  text-align: center;
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu {
+  display: flex;
+  flex-direction: column;
+  width: 33%; height: 100vh;
+  max-width: 500px;
+  box-sizing: border-box;
+  background-color: #ddd;
+  overflow: hidden;
+  transition: opacity 0.1s linear;
+  padding: 0 5px;
+  position: fixed;
+  left: 0; top: 0;
+  border-right: 2px solid #bbb;
+
+  z-index: 2;
+}
+
+#menu-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+  flex-grow: 0;
+  flex-shrink: 0;
+}
+
+#menu a {
+  color: #1567a2;
+}
+
+#menu.active {
+  display: flex;
+  opacity: 1;
+  z-index: 2;
+}
+
+#menu-pins {
+  flex-grow: 1;
+  display: none;
+}
+
+#menu-pins.active {
+  display: block;
+}
+
+#menu-pins-list {
+  margin: 0;
+  padding: 0;
+  counter-reset: pins-counter;
+}
+
+#menu-pins-list > li:before {
+  content: counter(pins-counter);
+  counter-increment: pins-counter;
+  display: inline-block;
+  width: 25px;
+  text-align: center;
+  border: 1px solid #bbb;
+  padding: 2px;
+  margin: 4px;
+  box-sizing: border-box;
+  line-height: 1em;
+  background-color: #ccc;
+  border-radius: 4px;
+}
+#menu-toc > ol {
+  padding: 0;
+  flex-grow: 1;
+}
+
+#menu-toc > ol li {
+  padding: 0;
+}
+
+#menu-toc > ol , #menu-toc > ol ol {
+  list-style-type: none;
+  margin: 0;
+  padding: 0;
+}
+
+#menu-toc > ol ol {
+  padding-left: 0.75em;
+}
+
+#menu-toc li {
+  text-overflow: ellipsis;
+  overflow: hidden;
+  white-space: nowrap;
+}
+
+#menu-toc .item-toggle {
+  display: inline-block;
+  transform: rotate(-45deg) translate(-5px, -5px);
+  transition: transform 0.1s ease;
+  text-align: center;
+  width: 20px;
+
+  color: #aab;
+
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu-toc .item-toggle-none {
+  display: inline-block;
+  width: 20px;
+}
+
+#menu-toc li.active > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li > ol {
+  display: none;
+}
+
+#menu-toc li.active > ol {
+  display: block;
+}
+
+#menu-toc li.revealed > a {
+  background-color: #bbb;
+  font-weight: bold;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed-leaf> a {
+  color: #206ca7;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li.revealed > ol {
+  display: block;
+}
+
+#menu-toc li > a {
+  padding: 2px 5px;
+}
+
+#menu > * {
+  margin-bottom: 5px;
+}
+
+.menu-pane-header {
+  padding: 0 5px;
+  text-transform: uppercase;
+  background-color: #aaa;
+  color: #335;
+  font-weight: bold;
+  letter-spacing: 2px;
+  flex-grow: 0;
+  flex-shrink: 0;
+  font-size: 0.8em;
+}
+
+#menu-toc {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  overflow: hidden;
+  flex-grow: 1;
+}
+
+#menu-toc ol.toc {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#menu-search {
+  position: relative;
+  flex-grow: 0;
+  flex-shrink: 0;
+  width: 100%;
+  
+  display: flex;
+  flex-direction: column;
+  
+  max-height: 300px;
+}
+
+#menu-trace-list {
+  display: none;
+}
+
+#menu-search-box {
+  box-sizing: border-box;
+  display: block;
+  width: 100%;
+  margin: 5px 0 0 0;
+  font-size: 1em;
+  padding: 2px;
+  background-color: #bbb;
+  border: 1px solid #999;
+}
+
+#menu-search-results {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+li.menu-search-result-clause:before {
+    content: 'clause';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+li.menu-search-result-op:before {
+    content: 'op';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+
+li.menu-search-result-prod:before {
+    content: 'prod';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+
+li.menu-search-result-term:before {
+    content: 'term';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+#menu-search-results ul {
+  padding: 0 5px;
+  margin: 0;
+}
+
+#menu-search-results li {
+  white-space: nowrap;
+  text-overflow: ellipsis;
+}
+
+
+#menu-trace-list {
+  counter-reset: item;
+  margin: 0 0 0 20px;
+  padding: 0;
+}
+#menu-trace-list li {
+  display: block;
+  white-space: nowrap;
+}
+
+#menu-trace-list li .secnum:after {
+  content: " ";
+}
+#menu-trace-list li:before {
+    content: counter(item) " ";
+    background-color: #222;
+    counter-increment: item;
+    color: #999;
+    width: 20px;
+    height: 20px;
+    line-height: 20px;
+    display: inline-block;
+    text-align: center;
+    margin: 2px 4px 2px 0;
+}
+
+@media (max-width: 1000px) {
+  body {
+    margin: 0;
+    display: block;
+  }
+
+  #menu {
+    display: none;
+    padding-top: 3em;
+    width: 450px;
+  }
+
+  #menu.active {
+    position: fixed;
+    height: 100%;
+    left: 0;
+    top: 0;
+    right: 300px;
+  }
+
+  #menu-toggle {
+    visibility: visible;
+  }
+
+  #spec-container {
+    padding: 0 5px;
+  }
+
+  #references-pane-spacer {
+    display: none;
+  }
+}
+
+@media only screen and (max-width: 800px) {
+  #menu {
+    width: 100%;
+  }
+
+  h1 .secnum:empty {
+    margin: 0; padding: 0;
+  }
+}
+
+
+/* Toolbox */
+.toolbox {
+	position: absolute;
+	background: #ddd;
+	border: 1px solid #aaa;
+  display: none;
+  color: #eee;
+  padding: 5px;
+  border-radius: 3px;
+}
+
+.toolbox.active {
+  display: inline-block;
+}
+
+.toolbox a {
+  text-decoration: none;
+  padding: 0 5px;
+}
+
+.toolbox a:hover {
+  text-decoration: underline;
+}
+
+.toolbox:after, .toolbox:before {
+	top: 100%;
+	left: 15px;
+	border: solid transparent;
+	content: " ";
+	height: 0;
+	width: 0;
+	position: absolute;
+	pointer-events: none;
+}
+
+.toolbox:after {
+	border-color: rgba(0, 0, 0, 0);
+	border-top-color: #ddd;
+	border-width: 10px;
+	margin-left: -10px;
+}
+.toolbox:before {
+	border-color: rgba(204, 204, 204, 0);
+	border-top-color: #aaa;
+	border-width: 12px;
+	margin-left: -12px;
+}
+
+#references-pane-container {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: 250px;
+  display: none;
+  background-color: #ddd;
+  z-index: 1;
+}
+
+#references-pane-table-container {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#references-pane-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+}
+
+#references-pane {
+  flex-grow: 1;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+#references-pane-container.active {
+  display: flex;
+}
+
+#references-pane-close:after {
+  content: '✖';
+  float: right;
+  cursor: pointer;
+}
+
+#references-pane table tr td:first-child {
+  text-align: right;
+  padding-right: 5px;
+}
+
+@media print {
+  #menu-toggle {
+    display: none; 
+  }
+}
+</style></head><body><div id="menu-toggle">☰</div><div id="menu-spacer"></div><div id="menu"><div id="menu-search"><input type="text" id="menu-search-box" placeholder="Search..."><div id="menu-search-results" class="inactive"></div></div><div id="menu-pins"><div class="menu-pane-header">Pins</div><ul id="menu-pins-list"></ul></div><div class="menu-pane-header">Table of Contents</div><div id="menu-toc"><ol class="toc"><li><span class="item-toggle">◢</span><a href="#numberformat-objects" title="NumberFormat Objects"><span class="secnum">1</span> NumberFormat Objects</a><ol class="toc"><li><span class="item-toggle">◢</span><a href="#sec-numberformat-abstracts" title="Abstract Operations For NumberFormat Objects"><span class="secnum">1.1</span> Abstract Operations For NumberFormat Objects</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-setnfdigitoptions" title="SetNumberFormatDigitOptions ( intlObj, options, mnfdDefault, mxfdDefault )"><span class="secnum">1.1.1</span> SetNumberFormatDigitOptions ( <var>intlObj</var>, <var>options</var>, <var>mnfdDefault</var>, <var>mxfdDefault</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-initializenumberformat" title="InitializeNumberFormat ( numberFormat, locales, options )"><span class="secnum">1.1.2</span> InitializeNumberFormat ( <var>numberFormat</var>, <var>locales</var>, <var>options</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-currencydigits" title="CurrencyDigits ( currency )"><span class="secnum">1.1.3</span> CurrencyDigits ( <var>currency</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-number-format-functions" title="Number Format Functions"><span class="secnum">1.1.4</span> Number Format Functions</a></li><li><span class="item-toggle-none"></span><a href="#sec-formatnumberstring" title="FormatNumberToString ( intlObject, x )"><span class="secnum">1.1.5</span> FormatNumberToString ( <var>intlObject</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-partitionnumberpattern" title="PartitionNumberPattern ( numberFormat, x )"><span class="secnum">1.1.6</span> PartitionNumberPattern ( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-formatnumber" title="FormatNumber( numberFormat, x )"><span class="secnum">1.1.7</span> FormatNumber( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-formatnumbertoparts" title="FormatNumberToParts( numberFormat, x )"><span class="secnum">1.1.8</span> FormatNumberToParts( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-torawprecision" title="ToRawPrecision( x, minPrecision, maxPrecision )"><span class="secnum">1.1.9</span> ToRawPrecision( <var>x</var>, <var>minPrecision</var>, <var>maxPrecision</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-torawfixed" title="ToRawFixed( x, minInteger, minFraction, maxFraction )"><span class="secnum">1.1.10</span> ToRawFixed( <var>x</var>, <var>minInteger</var>, <var>minFraction</var>, <var>maxFraction</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-unwrapnumberformat" title="UnwrapNumberFormat( nf )"><span class="secnum">1.1.11</span> UnwrapNumberFormat( <var>nf</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-setnumberformatunitoptions" title="SetNumberFormatUnitOptions ( intlObj, options )"><span class="secnum">1.1.12</span> SetNumberFormatUnitOptions ( <var>intlObj</var>, <var>options</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-getnumberformatpattern" title="GetNumberFormatPattern ( numberFormat, x, exponent )"><span class="secnum">1.1.13</span> GetNumberFormatPattern ( <var>numberFormat</var>, <var>x</var>, <var>exponent</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-computeexponent" title="ComputeExponent ( numberFormat, x )"><span class="secnum">1.1.14</span> ComputeExponent ( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-computeexponentformagnitude" title="ComputeExponentForMagnitude ( numberFormat, magnitude )"><span class="secnum">1.1.15</span> ComputeExponentForMagnitude ( <var>numberFormat</var>, <var>magnitude</var> )</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-intl-numberformat-constructor" title="The Intl.NumberFormat Constructor"><span class="secnum">1.2</span> The Intl.NumberFormat Constructor</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat" title="Intl.NumberFormat ( [ locales [ , options ] ] )"><span class="secnum">1.2.1</span> Intl.NumberFormat ( [ <var>locales</var> [ , <var>options</var> ] ] )</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-properties-of-intl-numberformat-constructor" title="Properties of the Intl.NumberFormat Constructor"><span class="secnum">1.3</span> Properties of the Intl.NumberFormat Constructor</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype" title="Intl.NumberFormat.prototype"><span class="secnum">1.3.1</span> Intl.NumberFormat.prototype</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.supportedlocalesof" title="Intl.NumberFormat.supportedLocalesOf ( locales [ , options ] )"><span class="secnum">1.3.2</span> Intl.NumberFormat.supportedLocalesOf ( <var>locales</var> [ , <var>options</var> ] )</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat-internal-slots" title="Internal slots"><span class="secnum">1.3.3</span> Internal slots</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-properties-of-intl-numberformat-prototype-object" title="Properties of the Intl.NumberFormat Prototype Object"><span class="secnum">1.4</span> Properties of the Intl.NumberFormat Prototype Object</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.constructor" title="Intl.NumberFormat.prototype.constructor"><span class="secnum">1.4.1</span> Intl.NumberFormat.prototype.constructor</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype-@@tostringtag" title="Intl.NumberFormat.prototype [ @@toStringTag ]"><span class="secnum">1.4.2</span> Intl.NumberFormat.prototype [ @@toStringTag ]</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.format" title="get Intl.NumberFormat.prototype.format"><span class="secnum">1.4.3</span> get Intl.NumberFormat.prototype.format</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.formattoparts" title="Intl.NumberFormat.prototype.formatToParts ( value )"><span class="secnum">1.4.4</span> Intl.NumberFormat.prototype.formatToParts ( <var>value</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.resolvedoptions" title="Intl.NumberFormat.prototype.resolvedOptions ()"><span class="secnum">1.4.5</span> Intl.NumberFormat.prototype.resolvedOptions ()</a></li></ol></li><li><span class="item-toggle-none"></span><a href="#sec-properties-of-intl-numberformat-instances" title="Properties of Intl.NumberFormat Instances"><span class="secnum">1.5</span> Properties of Intl.NumberFormat Instances</a></li></ol></li></ol></div></div><div id="spec-container"><emu-clause id="numberformat-objects">
+  <h1 class="first"><span class="secnum">1</span>NumberFormat Objects</h1>
+
+  <emu-clause id="sec-numberformat-abstracts">
+    <h1><span class="secnum">1.1</span>Abstract Operations For NumberFormat Objects</h1>
+
+    <emu-clause id="sec-setnfdigitoptions" aoid="SetNumberFormatDigitOptions">
+      <h1><span class="secnum">1.1.1</span>SetNumberFormatDigitOptions ( <var>intlObj</var>, <var>options</var>, <var>mnfdDefault</var>, <var>mxfdDefault</var> )</h1>
+
+      <p>
+        The abstract operation SetNumberFormatDigitOptions applies digit
+        options used for number formatting onto the intl object.
+      
+      </p>
+      <emu-alg><ol><li>Assert: <emu-xref aoid="Type" id="_ref_9"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>intlObj</var>) is Object.</li><li>Assert: <emu-xref aoid="Type" id="_ref_10"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>options</var>) is Object.</li><li>Assert: <emu-xref aoid="Type" id="_ref_11"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>mnfdDefault</var>) is Number.</li><li>Assert: <emu-xref aoid="Type" id="_ref_12"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>mxfdDefault</var>) is Number.</li><li>Let <var>mnid</var> be ?&nbsp;GetNumberOption(<var>options</var>, <code>"minimumIntegerDigits"</code>, 1, 21, 1).</li><li>Let <var>mnfd</var> be ? <emu-xref aoid="Get" id="_ref_13"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref><del>NumberOption</del>(<var>options</var>, <code>"minimumFractionDigits"</code><del>, 0, 20, <var>mnfdDefault</var></del>).</li><li><del class="block">Let <var>mxfdActualDefault</var> be <emu-xref aoid="max"><a href="https://tc39.github.io/ecma262/#sec-algorithm-conventions">max</a></emu-xref>( <var>mnfd</var>, <var>mxfdDefault</var> ).</del></li><li>Let <var>mxfd</var> be ? <emu-xref aoid="Get" id="_ref_14"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref><del>NumberOption</del>(<var>options</var>, <code>"maximumFractionDigits"</code><del>, <var>mnfd</var>, 20, <var>mxfdActualDefault</var></del>).</li><li>Let <var>mnsd</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_15"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>options</var>, <code>"minimumSignificantDigits"</code>).</li><li>Let <var>mxsd</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_16"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>options</var>, <code>"maximumSignificantDigits"</code>).</li><li>Set <var>intlObj</var>.[[MinimumIntegerDigits]] to <var>mnid</var>.</li><li><del class="block">Set <var>intlObj</var>.[[MinimumFractionDigits]] to <var>mnfd</var>.</del></li><li><del class="block">Set <var>intlObj</var>.[[MaximumFractionDigits]] to <var>mxfd</var>.</del></li><li>If <var>mnsd</var> is not <emu-val>undefined</emu-val> or <var>mxsd</var> is not <emu-val>undefined</emu-val>, then<ol><li><ins class="block">Set <var>intlObj</var>.[[RoundingType]] to <code>"significantDigits"</code>.</ins></li><li>Let <var>mnsd</var> be ?&nbsp;DefaultNumberOption(<var>mnsd</var>, 1, 21, 1).</li><li>Let <var>mxsd</var> be ?&nbsp;DefaultNumberOption(<var>mxsd</var>, <var>mnsd</var>, 21, 21).</li><li>Set <var>intlObj</var>.[[MinimumSignificantDigits]] to <var>mnsd</var>.</li><li>Set <var>intlObj</var>.[[MaximumSignificantDigits]] to <var>mxsd</var>.</li></ol></li><li><ins class="block">Else If <var>mnfd</var> is not <emu-val>undefined</emu-val> or <var>mxfd</var> is not <emu-val>undefined</emu-val>, then</ins><ol><li><ins class="block">Set <var>intlObj</var>.[[RoundingType]] to <code>"fractionDigits"</code>.</ins></li><li><ins class="block">Let <var>mnfd</var> be ?&nbsp;DefaultNumberOption(<var>mnfd</var>, 0, 20, <var>mnfdDefault</var>).</ins></li><li><ins class="block">Let <var>mxfdActualDefault</var> be <emu-xref aoid="max"><a href="https://tc39.github.io/ecma262/#sec-algorithm-conventions">max</a></emu-xref>( <var>mnfd</var>, <var>mxfdDefault</var> ).</ins></li><li><ins class="block">Let <var>mxfd</var> be ?&nbsp;DefaultNumberOption(<var>mxfd</var>, <var>mnfd</var>, 20, <var>mxfdActualDefault</var>).</ins></li><li><ins class="block">Set <var>intlObj</var>.[[MinimumFractionDigits]] to <var>mnfd</var>.</ins></li><li><ins class="block">Set <var>intlObj</var>.[[MaximumFractionDigits]] to <var>mxfd</var>.</ins></li></ol></li><li><ins class="block">Else If <var>intlObj</var>.[[Notation]] is <code>"compact"</code>, then</ins><ol><li><ins class="block">Set <var>intlObj</var>.[[RoundingType]] to <code>"compactRounding"</code>.</ins></li></ol></li><li><ins class="block">Else,</ins><ol><li><ins class="block">Set <var>intlObj</var>.[[RoundingType]] to <code>"fractionDigits"</code>.</ins></li><li><ins class="block">Set <var>intlObj</var>.[[MinimumFractionDigits]] to <var>mnfdDefault</var>.</ins></li><li><ins class="block">Set <var>intlObj</var>.[[MaximumFractionDigits]] to <var>mxfdDefault</var>.</ins>
+      </li></ol></li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-initializenumberformat" aoid="InitializeNumberFormat">
+      <h1><span class="secnum">1.1.2</span>InitializeNumberFormat ( <var>numberFormat</var>, <var>locales</var>, <var>options</var> )</h1>
+
+      <p>
+        The abstract operation InitializeNumberFormat accepts the arguments <var>numberFormat</var> (which must be an object), <var>locales</var>, and <var>options</var>. It initializes <var>numberFormat</var> as a NumberFormat object. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>requestedLocales</var> be ?&nbsp;CanonicalizeLocaleList(<var>locales</var>).</li><li>If <var>options</var> is <emu-val>undefined</emu-val>, then<ol><li>Let <var>options</var> be <emu-xref aoid="ObjectCreate" id="_ref_17"><a href="https://tc39.github.io/ecma262/#sec-objectcreate">ObjectCreate</a></emu-xref>(<emu-val>null</emu-val>).</li></ol></li><li>Else,<ol><li>Let <var>options</var> be ?&nbsp;<emu-xref aoid="ToObject" id="_ref_18"><a href="https://tc39.github.io/ecma262/#sec-toobject">ToObject</a></emu-xref>(<var>options</var>).</li></ol></li><li>Let <var>opt</var> be a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref>.</li><li>Let <var>matcher</var> be ?&nbsp;GetOption(<var>options</var>, <code>"localeMatcher"</code>, <code>"string"</code>, « <code>"lookup"</code>, <code>"best fit"</code> », <code>"best fit"</code>).</li><li>Set <var>opt</var>.[[localeMatcher]] to <var>matcher</var>.</li><li>Let <var>localeData</var> be <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_19"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[LocaleData]].</li><li>Let <var>r</var> be ResolveLocale(<emu-xref href="#sec-intl-numberformat-constructor" id="_ref_20"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[AvailableLocales]], <var>requestedLocales</var>, <var>opt</var>, <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_21"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[RelevantExtensionKeys]], <var>localeData</var>).</li><li>Set <var>numberFormat</var>.[[Locale]] to <var>r</var>.[[locale]].</li><li><ins class="block">Set <var>numberFormat</var>.[[DataLocale]] to <var>r</var>.[[dataLocale]].</ins></li><li>Set <var>numberFormat</var>.[[NumberingSystem]] to <var>r</var>.[[nu]].</li><li><del class="block">Let <var>dataLocale</var> be <var>r</var>.[[dataLocale]].</del></li><li><del class="block">Let <var>style</var> be ?&nbsp;GetOption(<var>options</var>, <code>"style"</code>, <code>"string"</code>, « <code>"decimal"</code>, <code>"percent"</code>, <code>"currency"</code> », <code>"decimal"</code>).</del></li><li><del class="block">Set <var>numberFormat</var>.[[Style]] to <var>style</var>.</del></li><li><del class="block">Let <var>currency</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currency"</code>, <code>"string"</code>, <emu-val>undefined</emu-val>, <emu-val>undefined</emu-val>).</del></li><li><del class="block">If <var>currency</var> is not <emu-val>undefined</emu-val>, then</del><ol><li><del class="block">If the result of IsWellFormedCurrencyCode(<var>currency</var>) is <emu-val>false</emu-val>, throw a <emu-val>RangeError</emu-val> exception.</del></li></ol></li><li><del class="block">If <var>style</var> is <code>"currency"</code> and <var>currency</var> is <emu-val>undefined</emu-val>, throw a <emu-val>TypeError</emu-val> exception.</del></li><li><del class="block">If <var>style</var> is <code>"currency"</code>, then</del><ol><li><del class="block">Let <var>currency</var> be the result of converting <var>currency</var> to upper case as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.</del></li><li><del class="block">Set <var>numberFormat</var>.[[Currency]] to <var>currency</var>.</del></li><li><del class="block">Let <var>cDigits</var> be <emu-xref aoid="CurrencyDigits" id="_ref_22"><a href="#sec-currencydigits">CurrencyDigits</a></emu-xref>(<var>currency</var>).</del></li></ol></li><li><del class="block">Let <var>currencyDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currencyDisplay"</code>, <code>"string"</code>, « <code>"code"</code>, <code>"symbol"</code>, <code>"name"</code> », <code>"symbol"</code>).</del></li><li><del class="block">If <var>style</var> is <code>"currency"</code>, set <var>numberFormat</var>.[[CurrencyDisplay]] to <var>currencyDisplay</var>.</del></li><li><ins class="block">Perform ?&nbsp;<emu-xref aoid="SetNumberFormatUnitOptions" id="_ref_23"><a href="#sec-setnumberformatunitoptions">SetNumberFormatUnitOptions</a></emu-xref>(<var>numberFormat</var>, <var>options</var>).</ins></li><li><ins class="block">Let <var>style</var> be <var>numberFormat</var>.[[Style]].</ins></li><li>If <var>style</var> is <code>"currency"</code>, then<ol><li><ins class="block">Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</ins></li><li><ins class="block">Let <var>cDigits</var> be <emu-xref aoid="CurrencyDigits" id="_ref_24"><a href="#sec-currencydigits">CurrencyDigits</a></emu-xref>(<var>currency</var>).</ins></li><li>Let <var>mnfdDefault</var> be <var>cDigits</var>.</li><li>Let <var>mxfdDefault</var> be <var>cDigits</var>.</li></ol></li><li>Else,<ol><li>Let <var>mnfdDefault</var> be 0.</li><li>If <var>style</var> is <code>"percent"</code>, then<ol><li>Let <var>mxfdDefault</var> be 0.</li></ol></li><li>Else,<ol><li>Let <var>mxfdDefault</var> be 3.</li></ol></li></ol></li><li><ins class="block">Let <var>notation</var> be ?&nbsp;GetOption(<var>options</var>, <code>"notation"</code>, <code>"string"</code>, « <code>"standard"</code>, <code>"scientific"</code>, <code>"engineering"</code>, <code>"compact"</code> », <code>"standard"</code>).</ins></li><li><ins class="block">Set <var>numberFormat</var>.[[Notation]] to <var>notation</var>.</ins></li><li>Perform ?&nbsp;<emu-xref aoid="SetNumberFormatDigitOptions" id="_ref_25"><a href="#sec-setnfdigitoptions">SetNumberFormatDigitOptions</a></emu-xref>(<var>numberFormat</var>, <var>options</var>, <var>mnfdDefault</var>, <var>mxfdDefault</var>).</li><li><ins class="block">Let <var>compactDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"compactDisplay"</code>, <code>"string"</code>, « <code>"short"</code>, <code>"long"</code> », <code>"short"</code>).</ins></li><li><ins class="block">If <var>notation</var> is <code>"compact"</code>, then</ins><ol><li><ins class="block">Set <var>numberFormat</var>.[[CompactDisplay]] to <var>compactDisplay</var>.</ins></li></ol></li><li>Let <var>useGrouping</var> be ?&nbsp;GetOption(<var>options</var>, <code>"useGrouping"</code>, <code>"boolean"</code>, <emu-val>undefined</emu-val>, <emu-val>true</emu-val>).</li><li>Set <var>numberFormat</var>.[[UseGrouping]] to <var>useGrouping</var>.</li><li><ins class="block">Let <var>signDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"signDisplay"</code>, <code>"string"</code>, « <code>"auto"</code>, <code>"never"</code>, <code>"always"</code>, <code>"exceptZero"</code> », <code>"auto"</code>).</ins></li><li><ins class="block">Set <var>numberFormat</var>.[[SignDisplay]] to <var>signDisplay</var>.</ins></li><li><del class="block">Let <var>dataLocaleData</var> be <var>localeData</var>.[[&lt;<var>dataLocale</var>&gt;]].</del></li><li><del class="block">Let <var>patterns</var> be <var>dataLocaleData</var>.[[patterns]].</del></li><li><del class="block">Assert: <var>patterns</var> is a record (see <emu-xref href="#sec-intl.numberformat-internal-slots" id="_ref_0"><a href="#sec-intl.numberformat-internal-slots">1.3.3</a></emu-xref>).</del></li><li><del class="block">Let <var>stylePatterns</var> be <var>patterns</var>.[[&lt;<var>style</var>&gt;]].</del></li><li><del class="block">Set <var>numberFormat</var>.[[PositivePattern]] to <var>stylePatterns</var>.[[positivePattern]].</del></li><li><del class="block">Set <var>numberFormat</var>.[[NegativePattern]] to <var>stylePatterns</var>.[[negativePattern]].</del></li><li>Return <var>numberFormat</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-currencydigits" aoid="CurrencyDigits">
+      <h1><span class="secnum">1.1.3</span>CurrencyDigits ( <var>currency</var> )</h1>
+
+      <p>
+        When the abstract operation CurrencyDigits is called with an argument <var>currency</var> (which must be an upper case String value), the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If the ISO 4217 currency and funds code list contains <var>currency</var> as an alphabetic code, return the minor unit value corresponding to the <var>currency</var> from the list; otherwise, return 2.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-number-format-functions">
+      <h1><span class="secnum">1.1.4</span>Number Format Functions</h1>
+
+      <p>A Number format function is an anonymous built-in function that has a [[NumberFormat]] internal slot.</p>
+      <p>When a Number format function <var>F</var> is called with optional argument <var>value</var>, the following steps are taken:</p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be <var>F</var>.[[NumberFormat]].</li><li>Assert: <emu-xref aoid="Type" id="_ref_26"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is Object and <var>nf</var> has an [[InitializedNumberFormat]] internal slot.</li><li>If <var>value</var> is not provided, let <var>value</var> be <emu-val>undefined</emu-val>.</li><li>Let <var>x</var> be ?&nbsp;<emu-xref aoid="ToNumber" id="_ref_27"><a href="https://tc39.github.io/ecma262/#sec-tonumber">ToNumber</a></emu-xref>(<var>value</var>).</li><li>Return <emu-xref aoid="FormatNumber" id="_ref_28"><a href="#sec-formatnumber">FormatNumber</a></emu-xref>(<var>nf</var>, <var>x</var>).
+      </li></ol></emu-alg>
+
+      <p>
+        The <code>length</code> property of a Number format function is 1.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumberstring" aoid="FormatNumberToString">
+      <h1><span class="secnum">1.1.5</span>FormatNumberToString ( <var>intlObject</var>, <var>x</var> )</h1>
+
+      <p>
+        The FormatNumberToString abstract operation is called with arguments <var>intlObject</var> (which must be an object with [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], and [[MaximumFractionDigits]] internal slots), and <var>x</var> (which must be a Number value), and returns  <ins>a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> containing two values:</ins> <var>x</var> as a string value with digits formatted according to the five formatting parameters  <ins>in the field [[FormattedString]], and the final floating decimal value of <var>x</var> after rounding has been performed in the field [[RoundedNumber]]</ins>.
+      
+      </p>
+
+      <del class="block">
+      <emu-alg><ol><li>If <var>intlObject</var>.[[MinimumSignificantDigits]] and <var>intlObject</var>.[[MaximumSignificantDigits]] are both not <emu-val>undefined</emu-val>, then<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawPrecision" id="_ref_29"><a href="#sec-torawprecision">ToRawPrecision</a></emu-xref>(<var>x</var>, <var>intlObject</var>.[[MinimumSignificantDigits]], <var>intlObject</var>.[[MaximumSignificantDigits]]).</li></ol></li><li>Else,<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawFixed" id="_ref_30"><a href="#sec-torawfixed">ToRawFixed</a></emu-xref>(<var>x</var>, <var>intlObject</var>.[[MinimumIntegerDigits]], <var>intlObject</var>.[[MinimumFractionDigits]], <var>intlObject</var>.[[MaximumFractionDigits]]).</li></ol></li><li>Return <var>result</var>.
+      </li></ol></emu-alg>
+      </del>
+      <ins class="block">
+      <emu-alg><ol><li>Let <var>isNegative</var> be <var>x</var> &lt; 0 or <var>x</var> is <emu-val>-0</emu-val>.</li><li>If <var>isNegative</var>, then<ol><li>Let <var>x</var> be -<var>x</var>.</li></ol></li><li>If <var>intlObject</var>.[[RoundingType]] is <code>"significantDigits"</code>, then<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawPrecision" id="_ref_31"><a href="#sec-torawprecision">ToRawPrecision</a></emu-xref>(<var>x</var>, <var>intlObject</var>.[[MinimumSignificantDigits]], <var>intlObject</var>.[[MaximumSignificantDigits]]).</li></ol></li><li>Else If <var>intlObject</var>.[[RoundingType]] is <code>"fractionDigits"</code>, then,<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawFixed" id="_ref_32"><a href="#sec-torawfixed">ToRawFixed</a></emu-xref>(<var>x</var>, <var>intlObject</var>.[[MinimumFractionDigits]], <var>intlObject</var>.[[MaximumFractionDigits]]).</li></ol></li><li>Else,<ol><li>Assert: <var>intlObject</var>.[[RoundingType]] is <code>"compactRounding"</code>.</li><li>Let <var>result</var> be <emu-xref aoid="ToRawFixed" id="_ref_33"><a href="#sec-torawfixed">ToRawFixed</a></emu-xref>(<var>x</var>, 0, 0).</li><li>If <var>result</var>.[[IntegerDigitsCount]] = 1, then<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawPrecision" id="_ref_34"><a href="#sec-torawprecision">ToRawPrecision</a></emu-xref>(<var>x</var>, 1, 2).</li></ol></li></ol></li><li>Let <var>x</var> be <var>result</var>.[[RoundedNumber]].</li><li>Let <var>string</var> be <var>result</var>.[[FormattedString]].</li><li>Let <var>int</var> be <var>result</var>.[[IntegerDigitsCount]].</li><li>Let <var>minInteger</var> be <var>intlObject</var>.[[MinimumIntegerDigits]].</li><li>If <var>int</var> &lt; <var>minInteger</var>, then<ol><li>Let <var>forwardZeros</var> be the String consisting of <var>minInteger</var>–<var>int</var> occurrences of the character <code>"0"</code>.</li><li>Let <var>string</var> be the concatenation of Strings <var>forwardZeros</var> and <var>string</var>.</li></ol></li><li>If <var>isNegative</var>, then<ol><li>Let <var>x</var> be -<var>x</var>.</li></ol></li><li>Return the <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[RoundedNumber]]: <var>x</var>, [[FormattedString]]: <var>string</var> }.
+      </li></ol></emu-alg>
+      </ins>
+    </emu-clause>
+
+    <emu-clause id="sec-partitionnumberpattern" aoid="PartitionNumberPattern">
+      <h1><span class="secnum">1.1.6</span>PartitionNumberPattern ( <var>numberFormat</var>, <var>x</var> )</h1>
+
+      <p>
+        The PartitionNumberPattern abstract operation is called with arguments <var>numberFormat</var> (which must be an object initialized as a NumberFormat) and <var>x</var> (which must be a Number value), interprets <var>x</var> as a numeric value, and creates the corresponding parts according to the effective locale and the formatting options of <var>numberFormat</var>. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li><del class="block">If <var>x</var> is not <emu-val>NaN</emu-val> and <var>x</var> &lt; 0 or <var>x</var> is <emu-val>-0</emu-val>, then</del><ol><li><del class="block">Let <var>x</var> be -<var>x</var>.</del></li><li><del class="block">Let <var>pattern</var> be <var>numberFormat</var>.[[NegativePattern]].</del></li></ol></li><li><del class="block">Else,</del><ol><li><del class="block">Let <var>pattern</var> be <var>numberFormat</var>.[[PositivePattern]].</del></li></ol></li><li><ins class="block">Let <var>exponent</var> be 0.</ins></li><li><ins class="block">If <var>x</var> is <emu-val>NaN</emu-val>, then</ins><ol><li><ins class="block">Let <var>n</var> be an implementation- and locale-dependent (ILD) String value indicating the <emu-val>NaN</emu-val> value.</ins></li></ol></li><li><ins class="block">Else if <var>x</var> is not a finite Number,</ins><ol><li><ins class="block">Let <var>n</var> be an ILD String value indicating infinity.</ins></li></ol></li><li><ins class="block">Else,</ins><ol><li><ins class="block">If <var>numberFormat</var>.[[Style]] is <code>"percent"</code>, let <var>x</var> be 100 × <var>x</var>.</ins></li><li><ins class="block">Let <var>exponent</var> be <emu-xref aoid="ComputeExponent" id="_ref_35"><a href="#sec-computeexponent">ComputeExponent</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</ins></li><li><ins class="block">Let <var>x</var> be <var>x</var> × 10<sup>-<var>exponent</var></sup>.</ins></li><li><ins class="block">Let <var>formatNumberResult</var> be <emu-xref aoid="FormatNumberToString" id="_ref_36"><a href="#sec-formatnumberstring">FormatNumberToString</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</ins></li><li><ins class="block">Let <var>n</var> be <var>formatNumberResult</var>.[[FormattedString]].</ins></li><li><ins class="block">Let <var>x</var> be <var>formatNumberResult</var>.[[RoundedNumber]].</ins></li></ol></li><li><ins class="block">Let <var>pattern</var> be <emu-xref aoid="GetNumberFormatPattern" id="_ref_37"><a href="#sec-getnumberformatpattern">GetNumberFormatPattern</a></emu-xref>(<var>numberFormat</var>, <var>x</var>, <var>exponent</var>)</ins></li><li>Let <var>result</var> be a new empty <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref>.</li><li>Let <var>beginIndex</var> be <emu-xref aoid="Call" id="_ref_38"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>pattern</var>, « <code>"{"</code>, 0 »).</li><li>Let <var>endIndex</var> be 0.</li><li>Let <var>nextIndex</var> be 0.</li><li>Let <var>length</var> be the number of code units in <var>pattern</var>.</li><li>Repeat, while <var>beginIndex</var> is an integer index into <var>pattern</var><ol><li>Set <var>endIndex</var> to <emu-xref aoid="Call" id="_ref_39"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>pattern</var>, « <code>"}"</code>, <var>beginIndex</var> »).</li><li>Assert: <var>endIndex</var> is greater than <var>beginIndex</var>.</li><li>If <var>beginIndex</var> is greater than <var>nextIndex</var>, then<ol><li>Let <var>literal</var> be a substring of <var>pattern</var> from position <var>nextIndex</var>, inclusive, to position <var>beginIndex</var>, exclusive.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"literal"</code>, [[Value]]: <var>literal</var> } as the last element of <var>result</var>.</li></ol></li><li>Let <var>p</var> be the substring of <var>pattern</var> from position <var>beginIndex</var>, exclusive, to position <var>endIndex</var>, exclusive.</li><li>If <var>p</var> is equal to <code>"number"</code>, then<ol><li>If <var>x</var> is <emu-val>NaN</emu-val>, then<ol><li><del class="block">Let <var>n</var> be an implementation- and locale-dependent (ILD) String value indicating the <emu-val>NaN</emu-val> value.</del></li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"nan"</code>, [[Value]]: <var>n</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>x</var> is not a finite Number,<ol><li><del class="block">Let <var>n</var> be an ILD String value indicating infinity.</del></li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"infinity"</code>, [[Value]]: <var>n</var> } as the last element of <var>result</var>.</li></ol></li><li>Else,<ol><li><del class="block">If <var>numberFormat</var>.[[Style]] is <code>"percent"</code>, let <var>x</var> be 100 × <var>x</var>.</del></li><li><del class="block">Let <var>n</var> be <emu-xref aoid="FormatNumberToString" id="_ref_40"><a href="#sec-formatnumberstring">FormatNumberToString</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</del></li><li>If the <var>numberFormat</var>.[[NumberingSystem]] matches one of the values in the <code>"Numbering System"</code> column of <emu-xref href="#table-numbering-system-digits" id="_ref_1"><a href="#table-numbering-system-digits">Table 1</a></emu-xref> below, then<ol><li>Let <var>digits</var> be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> whose 10 String valued elements are the UTF-16 string representations of the 10 <var>digits</var> specified in the <code>"Digits"</code> column of the matching row in <emu-xref href="#table-numbering-system-digits" id="_ref_2"><a href="#table-numbering-system-digits">Table 1</a></emu-xref>.</li><li>Replace each <var>digit</var> in <var>n</var> with the value of <var>digits</var>[<var>digit</var>].</li></ol></li><li>Else use an implementation dependent algorithm to map <var>n</var> to the appropriate representation of <var>n</var> in the given numbering system.</li><li>Let <var>decimalSepIndex</var> be <emu-xref aoid="Call" id="_ref_41"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>n</var>, « <code>"."</code>, 0 »).</li><li>If <var>decimalSepIndex</var> &gt; 0, then<ol><li>Let <var>integer</var> be the substring of <var>n</var> from position 0, inclusive, to position <var>decimalSepIndex</var>, exclusive.</li><li>Let <var>fraction</var> be the substring of <var>n</var> from position <var>decimalSepIndex</var>, exclusive, to the end of <var>n</var>.</li></ol></li><li>Else,<ol><li>Let <var>integer</var> be <var>n</var>.</li><li>Let <var>fraction</var> be <emu-val>undefined</emu-val>.</li></ol></li><li>If the <var>numberFormat</var>.[[UseGrouping]] is <emu-val>true</emu-val>, then<ol><li>Let <var>groupSepSymbol</var> be the implementation-, locale-, and numbering system-dependent (ILND) String representing the grouping separator.</li><li>Let <var>groups</var> be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> whose elements are, in left to right order, the substrings defined by ILND set of locations within the <var>integer</var>.</li><li>Assert: The number of elements in <var>groups</var> <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> is greater than 0.</li><li>Repeat, while <var>groups</var> <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> is not empty<ol><li>Remove the first element from <var>groups</var> and let <var>integerGroup</var> be the value of that element.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"integer"</code>, [[Value]]: <var>integerGroup</var> } as the last element of <var>result</var>.</li><li>If <var>groups</var> <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> is not empty, then<ol><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"group"</code>, [[Value]]: <var>groupSepSymbol</var> } as the last element of <var>result</var>.</li></ol></li></ol></li></ol></li><li>Else,<ol><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"integer"</code>, [[Value]]: <var>integer</var> } as the last element of <var>result</var>.</li></ol></li><li>If <var>fraction</var> is not <emu-val>undefined</emu-val>, then<ol><li>Let <var>decimalSepSymbol</var> be the ILND String representing the decimal separator.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"decimal"</code>, [[Value]]: <var>decimalSepSymbol</var> } as the last element of <var>result</var>.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"fraction"</code>, [[Value]]: <var>fraction</var> } as the last element of <var>result</var>.</li></ol></li></ol></li></ol></li><li>Else if <var>p</var> is equal to <code>"plusSign"</code>, then<ol><li>Let <var>plusSignSymbol</var> be the ILND String representing the plus sign.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"plusSign"</code>, [[Value]]: <var>plusSignSymbol</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"minusSign"</code>, then<ol><li>Let <var>minusSignSymbol</var> be the ILND String representing the minus sign.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"minusSign"</code>, [[Value]]: <var>minusSignSymbol</var> } as the last element of <var>result</var>.</li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"compactSymbol"</code>, then</ins><ol><li><ins class="block">Let <var>compactSymbol</var> be an ILD string representing <var>exponent</var> in short form, which may depend on <var>x</var> in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a <code>"{compactSymbol}"</code> placeholder.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"compact"</code>, [[Value]]: <var>compactSymbol</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"compactName"</code>, then</ins><ol><li><ins class="block">Let <var>compactName</var> be an ILD string representing <var>exponent</var> in long form, which may depend on <var>x</var> in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a <code>"{compactName}"</code> placeholder.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"compact"</code>, [[Value]]: <var>compactName</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"scientificSeparator"</code>, then</ins><ol><li><ins class="block">Let <var>scientificSeparator</var> be the ILND String representing the exponent separator.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"exponentSeparator"</code>, [[Value]]: <var>scientificSeparator</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"scientificExponent"</code>, then</ins><ol><li><ins class="block">If <var>exponent</var> &lt; 0, then</ins><ol><li><ins class="block">Let <var>minusSignSymbol</var> be the ILND String representing the minus sign.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"exponentMinusSign"</code>, [[Value]]: <var>minusSignSymbol</var> } as the last element of <var>result</var>.</ins></li><li><ins class="block">Let <var>exponent</var> be -<var>exponent</var>.</ins></li></ol></li><li><ins class="block">Let <var>exponentResult</var> be <emu-xref aoid="ToRawFixed" id="_ref_42"><a href="#sec-torawfixed">ToRawFixed</a></emu-xref>(<var>exponent</var>, 1, 0, 0).</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"exponentInteger"</code>, [[Value]]: <var>exponentResult</var>.[[FormattedString]] } as the last element of <var>result</var>.</ins></li></ol></li><li>Else if <var>p</var> is equal to <code>"percentSign"</code> <del>and <var>numberFormat</var>.[[Style]] is <code>"percent"</code></del>, then<ol><li>Let <var>percentSignSymbol</var> be the ILND String representing the percent sign.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"percentSign"</code>, [[Value]]: <var>percentSignSymbol</var> } as the last element of <var>result</var>.</li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"unitSymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"unit"</code> or <code>"percent"</code>, then</ins><ol><li><ins class="block">Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</ins></li><li><ins class="block">Let <var>mu</var> be an ILD string representing <var>unit</var> in short form, which may depend on <var>x</var> in languages having different plural forms.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unit"</code>, [[Value]]: <var>mu</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"unitNarrowSymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"unit"</code> or <code>"percent"</code>, then</ins><ol><li><ins class="block">Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</ins></li><li><ins class="block">Let <var>mu</var> be an ILD string representing <var>unit</var> in narrow form, which may depend on <var>x</var> in languages having different plural forms.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unit"</code>, [[Value]]: <var>mu</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"unitName"</code> and <var>numberFormat</var>.[[Style]] is <code>"unit"</code> or <code>"percent"</code>, then</ins><ol><li><ins class="block">Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</ins></li><li><ins class="block">Let <var>mu</var> be an ILD string representing <var>unit</var> in long form, which may depend on <var>x</var> in languages having different plural forms.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unit"</code>, [[Value]]: <var>mu</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><del class="block">Else if <var>p</var> is equal to <code>"currency"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then</del><ol><li><del class="block">Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</del></li><li><del class="block">Assert: <var>numberFormat</var>.[[CurrencyDisplay]] is <code>"code"</code>, <code>"symbol"</code> or <code>"name"</code>.</del></li><li><del class="block">If <var>numberFormat</var>.[[CurrencyDisplay]] is <code>"code"</code>, then</del><ol><li><del class="block">Let <var>cd</var> be <var>currency</var>.</del></li></ol></li><li><del class="block">Else if <var>numberFormat</var>.[[CurrencyDisplay]] is <code>"symbol"</code>, then</del><ol><li><del class="block">Let <var>cd</var> be an ILD string representing <var>currency</var> in short form. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</del></li></ol></li><li><del class="block">Else if <var>numberFormat</var>.[[CurrencyDisplay]] is <code>"name"</code>, then</del><ol><li><del class="block">Let <var>cd</var> be an ILD string representing <var>currency</var> in long form. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</del></li></ol></li><li><del class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</del></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"currencyCode"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then</ins><ol><li><ins class="block">Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</ins></li><li><ins class="block">Let <var>cd</var> be <var>currency</var>.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"currencySymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then</ins><ol><li><ins class="block">Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</ins></li><li><ins class="block">Let <var>cd</var> be an ILD string representing <var>currency</var> in short form. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"currencyNarrowSymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then</ins><ol><li><ins class="block">Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</ins></li><li><ins class="block">Let <var>cd</var> be an ILD string representing <var>currency</var> in narrow form. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</ins></li></ol></li><li><ins class="block">Else if <var>p</var> is equal to <code>"currencyName"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then</ins><ol><li><ins class="block">Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</ins></li><li><ins class="block">Let <var>cd</var> be an ILD string representing <var>currency</var> in long form, which may depend on <var>x</var> in languages having different plural forms. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</ins></li><li><ins class="block">Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</ins></li></ol></li><li>Else,<ol><li>Let <var>unknown</var> be an ILND String based on <var>x</var> and <var>p</var>.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unknown"</code>, [[Value]]: <var>unknown</var> } as the last element of <var>result</var>.</li></ol></li><li>Set <var>nextIndex</var> to <var>endIndex</var> + 1.</li><li>Set <var>beginIndex</var> to <emu-xref aoid="Call" id="_ref_43"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>pattern</var>, « <code>"{"</code>, <var>nextIndex</var> »).</li></ol></li><li>If <var>nextIndex</var> is less than <var>length</var>, then<ol><li>Let <var>literal</var> be the substring of <var>pattern</var> from position <var>nextIndex</var>, inclusive, to position <var>length</var>, exclusive.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"literal"</code>, [[Value]]: <var>literal</var> } as the last element of <var>result</var>.</li></ol></li><li>Return <var>result</var>.
+      </li></ol></emu-alg>
+
+      <emu-table id="table-numbering-system-digits"><figure><figcaption>Table 1: Numbering systems with simple digit mappings</figcaption>
+        
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Numbering System</th>
+              <th>Digits</th>
+            </tr>
+          </thead>
+          <tbody><tr>
+            <td>arab</td>
+            <td>U+0660 to U+0669</td>
+          </tr>
+          <tr>
+            <td>arabext</td>
+            <td>U+06F0 to U+06F9</td>
+          </tr>
+          <tr>
+            <td>bali</td>
+            <td>U+1B50 to U+1B59</td>
+          </tr>
+          <tr>
+            <td>beng</td>
+            <td>U+09E6 to U+09EF</td>
+          </tr>
+          <tr>
+            <td>deva</td>
+            <td>U+0966 to U+096F</td>
+          </tr>
+          <tr>
+            <td>fullwide</td>
+            <td>U+FF10 to U+FF19</td>
+          </tr>
+          <tr>
+            <td>gujr</td>
+            <td>U+0AE6 to U+0AEF</td>
+          </tr>
+          <tr>
+            <td>guru</td>
+            <td>U+0A66 to U+0A6F</td>
+          </tr>
+          <tr>
+            <td>hanidec</td>
+            <td>U+3007, U+4E00, U+4E8C, U+4E09, U+56DB, U+4E94, U+516D, U+4E03, U+516B, U+4E5D</td>
+          </tr>
+          <tr>
+            <td>khmr</td>
+            <td>U+17E0 to U+17E9</td>
+          </tr>
+          <tr>
+            <td>knda</td>
+            <td>U+0CE6 to U+0CEF</td>
+          </tr>
+          <tr>
+            <td>laoo</td>
+            <td>U+0ED0 to U+0ED9</td>
+          </tr>
+          <tr>
+            <td>latn</td>
+            <td>U+0030 to U+0039</td>
+          </tr>
+          <tr>
+            <td>limb</td>
+            <td>U+1946 to U+194F</td>
+          </tr>
+          <tr>
+            <td>mlym</td>
+            <td>U+0D66 to U+0D6F</td>
+          </tr>
+          <tr>
+            <td>mong</td>
+            <td>U+1810 to U+1819</td>
+          </tr>
+          <tr>
+            <td>mymr</td>
+            <td>U+1040 to U+1049</td>
+          </tr>
+          <tr>
+            <td>orya</td>
+            <td>U+0B66 to U+0B6F</td>
+          </tr>
+          <tr>
+            <td>tamldec</td>
+            <td>U+0BE6 to U+0BEF</td>
+          </tr>
+          <tr>
+            <td>telu</td>
+            <td>U+0C66 to U+0C6F</td>
+          </tr>
+          <tr>
+            <td>thai</td>
+            <td>U+0E50 to U+0E59</td>
+          </tr>
+          <tr>
+            <td>tibt</td>
+            <td>U+0F20 to U+0F29</td>
+          </tr>
+        </tbody></table>
+      </figure></emu-table>
+
+      <emu-note><span class="note">Note 1</span><div class="note-contents">
+        The computations rely on String values and locations within numeric strings that are dependent upon the implementation and the effective locale of <var>numberFormat</var> ("ILD") or upon the implementation, the effective locale, and the numbering system of <var>numberFormat</var> ("ILND"). The ILD and ILND Strings mentioned, other than those for currency names, must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.
+      
+      </div></emu-note>
+
+      <emu-note><span class="note">Note 2</span><div class="note-contents">
+        It is recommended that implementations use the locale provided by the Common Locale Data Repository (available at  <a href="http://cldr.unicode.org/">http://cldr.unicode.org/</a>).
+      
+      </div></emu-note>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumber" aoid="FormatNumber">
+      <h1><span class="secnum">1.1.7</span>FormatNumber( <var>numberFormat</var>, <var>x</var> )</h1>
+
+      <p>
+        The FormatNumber abstract operation is called with arguments <var>numberFormat</var> (which must be an object initialized as a NumberFormat) and <var>x</var> (which must be a Number value), and performs the following steps:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>parts</var> be ?&nbsp;<emu-xref aoid="PartitionNumberPattern" id="_ref_44"><a href="#sec-partitionnumberpattern">PartitionNumberPattern</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>Let <var>result</var> be the empty String.</li><li>For each <var>part</var> in <var>parts</var>, do<ol><li>Set <var>result</var> to a String value produced by concatenating <var>result</var> and <var>part</var>.[[Value]].</li></ol></li><li>Return <var>result</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumbertoparts" aoid="FormatNumberToParts">
+      <h1><span class="secnum">1.1.8</span>FormatNumberToParts( <var>numberFormat</var>, <var>x</var> )</h1>
+
+      <p>
+        The FormatNumberToParts abstract operation is called with arguments <var>numberFormat</var> (which must be an object initialized as a NumberFormat) and <var>x</var> (which must be a Number value), and performs the following steps:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>parts</var> be ?&nbsp;<emu-xref aoid="PartitionNumberPattern" id="_ref_45"><a href="#sec-partitionnumberpattern">PartitionNumberPattern</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>Let <var>result</var> be <emu-xref aoid="ArrayCreate" id="_ref_46"><a href="https://tc39.github.io/ecma262/#sec-arraycreate">ArrayCreate</a></emu-xref>(0).</li><li>Let <var>n</var> be 0.</li><li>For each <var>part</var> in <var>parts</var>, do<ol><li>Let <var>O</var> be <emu-xref aoid="ObjectCreate" id="_ref_47"><a href="https://tc39.github.io/ecma262/#sec-objectcreate">ObjectCreate</a></emu-xref>(<emu-xref href="#sec-properties-of-the-object-prototype-object"><a href="https://tc39.github.io/ecma262/#sec-properties-of-the-object-prototype-object">%ObjectPrototype%</a></emu-xref>).</li><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_48"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>O</var>, <code>"type"</code>, <var>part</var>.[[Type]]).</li><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_49"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>O</var>, <code>"value"</code>, <var>part</var>.[[Value]]).</li><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_50"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>result</var>, !&nbsp;<emu-xref aoid="ToString" id="_ref_51"><a href="https://tc39.github.io/ecma262/#sec-tostring">ToString</a></emu-xref>(<var>n</var>), <var>O</var>).</li><li>Increment <var>n</var> by 1.</li></ol></li><li>Return <var>result</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-torawprecision" aoid="ToRawPrecision">
+      <h1><span class="secnum">1.1.9</span>ToRawPrecision( <var>x</var>, <var>minPrecision</var>, <var>maxPrecision</var> )</h1>
+
+      <p>
+        When the ToRawPrecision abstract operation is called with arguments <var>x</var> (which must be a finite non-negative number), <var>minPrecision</var>, and <var>maxPrecision</var> (both must be integers between 1 and 21), the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>p</var> be <var>maxPrecision</var>.</li><li>If <var>x</var> = 0, then<ol><li>Let <var>m</var> be the String consisting of <var>p</var> occurrences of the character <code>"0"</code>.</li><li>Let <var>e</var> be 0.</li><li><ins class="block">Let <var>xFinal</var> be 0.</ins></li></ol></li><li>Else,<ol><li><del class="block">Let <var>e</var> and <var>n</var> be integers such that 10<sup><var>p</var>–1</sup> ≤ <var>n</var> &lt; 10<sup><var>p</var></sup> and for which the exact mathematical value of <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup> – <var>x</var> is as close to zero as possible. If there are two such sets of <var>e</var> and <var>n</var>, pick the <var>e</var> and <var>n</var> for which <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup> is larger.</del></li><li><ins class="block">Let <var>e</var> be the base 10 logarithm of <var>x</var> rounded down to the nearest integer.</ins></li><li><ins class="block">Let <var>n</var> be an integer such that 10<sup><var>p</var>–1</sup> ≤ <var>n</var> &lt; 10<sup><var>p</var></sup> and for which the exact mathematical value of <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup> – <var>x</var> is as close to zero as possible. If there is more than one such <var>n</var>, pick the one for which <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup> is larger.</ins></li><li>Let <var>m</var> be the String consisting of the digits of the decimal representation of <var>n</var> (in order, with no leading zeroes).</li><li><ins class="block">Let <var>xFinal</var> be <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup>.</ins></li></ol></li><li><del class="block">If <var>e</var> ≥ <var>p</var>, then</del><ol><li><del class="block">Return the concatenation of <var>m</var> and <var>e</var>-<var>p</var>+1 occurrences of the character <code>"0"</code>.</del></li></ol></li><li><del class="block">If <var>e</var> = <var>p</var>-1, then</del><ol><li><del class="block">Return <var>m</var>.</del></li></ol></li><li><ins class="block">If <var>e</var> ≥ <var>p</var>–1, then</ins><ol><li><ins class="block">Let <var>m</var> be the concatenation of <var>m</var> and <var>e</var>–<var>p</var>+1 occurrences of the character <code>"0"</code>.</ins></li><li><ins class="block">Let <var>int</var> be <var>e</var>+1.</ins></li></ol></li><li><ins>Else</ins> If <var>e</var> ≥ 0, then<ol><li>Let <var>m</var> be the concatenation of the first <var>e</var>+1 characters of <var>m</var>, the character <code>"."</code>, and the remaining <var>p</var>–(<var>e</var>+1) characters of <var>m</var>.</li><li><ins class="block">Let <var>int</var> be <var>e</var>+1.</ins></li></ol></li><li><del>If <var>e</var> &lt; 0, then</del><ins>Else,</ins><ol><li><ins class="block">Assert: <var>e</var> &lt; 0.</ins></li><li>Let <var>m</var> be the concatenation of the String <code>"0."</code>, –(<var>e</var>+1) occurrences of the character <code>"0"</code>, and the string <var>m</var>.</li><li><ins class="block">Let <var>int</var> be 1.</ins></li></ol></li><li>If <var>m</var> contains the character <code>"."</code>, and <var>maxPrecision</var> &gt; <var>minPrecision</var>, then<ol><li>Let <var>cut</var> be <var>maxPrecision</var> – <var>minPrecision</var>.</li><li>Repeat, while <var>cut</var> &gt; 0 and the last character of <var>m</var> is <code>"0"</code><ol><li>Remove the last character from <var>m</var>.</li><li>Decrease <var>cut</var> by 1.</li></ol></li><li>If the last character of <var>m</var> is <code>"."</code>, then<ol><li>Remove the last character from <var>m</var>.</li></ol></li></ol></li><li><del class="block">Return <var>m</var>.</del></li><li><ins class="block">Return the <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[FormattedString]]: <var>m</var>, [[RoundedNumber]]: <var>xFinal</var>, [[IntegerDigitsCount]]: <var>int</var> }.</ins>
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-torawfixed" aoid="ToRawFixed">
+      <h1><span class="secnum">1.1.10</span>ToRawFixed( <var>x</var>, <var>minInteger</var>, <var>minFraction</var>, <var>maxFraction</var> )</h1>
+
+      <p>
+        When the ToRawFixed abstract operation is called with arguments <var>x</var> (which must be a finite non-negative number), <var>minInteger</var> (which must be an integer between 1 and 21), <var>minFraction</var>, and <var>maxFraction</var> (which must be integers between 0 and 20), the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>f</var> be <var>maxFraction</var>.</li><li>Let <var>n</var> be an integer for which the exact mathematical value of <var>n</var> ÷ 10<sup><var>f</var></sup> – <var>x</var> is as close to zero as possible. If there are two such <var>n</var>, pick the larger <var>n</var>.</li><li><ins class="block">Let <var>xFinal</var> be <var>n</var> ÷ 10<sup><var>f</var></sup>.</ins></li><li>If <var>n</var> = 0, let <var>m</var> be the String <code>"0"</code>. Otherwise, let <var>m</var> be the String consisting of the digits of the decimal representation of <var>n</var> (in order, with no leading zeroes).</li><li>If <var>f</var> ≠ 0, then<ol><li>Let <var>k</var> be the number of characters in <var>m</var>.</li><li>If <var>k</var> ≤ <var>f</var>, then<ol><li>Let <var>z</var> be the String consisting of <var>f</var>+1–<var>k</var> occurrences of the character <code>"0"</code>.</li><li>Let <var>m</var> be the concatenation of Strings <var>z</var> and <var>m</var>.</li><li>Let <var>k</var> be <var>f</var>+1.</li></ol></li><li>Let <var>a</var> be the first <var>k</var>–<var>f</var> characters of <var>m</var>, and let <var>b</var> be the remaining <var>f</var> characters of <var>m</var>.</li><li>Let <var>m</var> be the concatenation of the three Strings <var>a</var>, <code>"."</code>, and <var>b</var>.</li><li>Let <var>int</var> be the number of characters in <var>a</var>.</li></ol></li><li>Else, let <var>int</var> be the number of characters in <var>m</var>.</li><li>Let <var>cut</var> be <var>maxFraction</var> – <var>minFraction</var>.</li><li>Repeat, while <var>cut</var> &gt; 0 and the last character of <var>m</var> is <code>"0"</code><ol><li>Remove the last character from <var>m</var>.</li><li>Decrease <var>cut</var> by 1.</li></ol></li><li>If the last character of <var>m</var> is <code>"."</code>, then<ol><li>Remove the last character from <var>m</var>.</li></ol></li><li><del class="block">If <var>int</var> &lt; <var>minInteger</var>, then</del><ol><li><del class="block">Let <var>z</var> be the String consisting of <var>minInteger</var>–<var>int</var> occurrences of the character <code>"0"</code>.</del></li><li><del class="block">Let <var>m</var> be the concatenation of Strings <var>z</var> and <var>m</var>.</del></li></ol></li><li><del class="block">Return <var>m</var>.</del></li><li><ins class="block">Return the <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[FormattedString]]: <var>m</var>, [[RoundedNumber]]: <var>xFinal</var>, [[IntegerDigitsCount]]: <var>int</var> }.</ins>
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-unwrapnumberformat" aoid="UnwrapNumberFormat">
+      <h1><span class="secnum">1.1.11</span>UnwrapNumberFormat( <var>nf</var> )</h1>
+      <p>
+        The UnwrapNumberFormat abstract operation gets the underlying NumberFormat operation
+        for various methods which implement ECMA-402 v1 semantics for supporting initializing
+        existing Intl objects.
+      
+      </p>
+      <emu-alg><ol><li>Assert: <emu-xref aoid="Type" id="_ref_52"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is Object.
+      </li></ol></emu-alg>
+      <emu-normative-optional>
+      <emu-alg><ol start="2"><li>If <var>nf</var> does not have an [[InitializedNumberFormat]] internal slot and ?&nbsp;<emu-xref aoid="InstanceofOperator" id="_ref_53"><a href="https://tc39.github.io/ecma262/#sec-instanceofoperator">InstanceofOperator</a></emu-xref>(<var>nf</var>, <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_54"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>) is <emu-val>true</emu-val>, then<ol><li>Let <var>nf</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_55"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>nf</var>, %Intl%.[[FallbackSymbol]]).
+      </li></ol></li></ol></emu-alg>
+      </emu-normative-optional>
+      <emu-alg><ol start="3"><li>If <emu-xref aoid="Type" id="_ref_56"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object or <var>nf</var> does not have an [[InitializedNumberFormat]] internal slot, then<ol><li>Throw a <emu-val>TypeError</emu-val> exception.</li></ol></li><li>Return <var>nf</var>.
+      </li></ol></emu-alg>
+      <emu-note><span class="note">Note</span><div class="note-contents">See  <emu-xref href="#legacy-constructor"></emu-xref> for the motivation of the normative optional text.</div></emu-note>
+    </emu-clause>
+
+    <ins class="block">
+    <emu-clause id="sec-setnumberformatunitoptions" aoid="SetNumberFormatUnitOptions">
+      <h1><span class="secnum">1.1.12</span>SetNumberFormatUnitOptions ( <var>intlObj</var>, <var>options</var> )</h1>
+      <p>
+        The abstract operation SetNumberFormatUnitOptions resolves the user-specified options relating to units onto the intl object.
+      
+      </p>
+      <emu-alg><ol><li>Assert: <emu-xref aoid="Type" id="_ref_57"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>intlObj</var>) is Object.</li><li>Assert: <emu-xref aoid="Type" id="_ref_58"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>options</var>) is Object.</li><li>Let <var>style</var> be ?&nbsp;GetOption(<var>options</var>, <code>"style"</code>, <code>"string"</code>, « <code>"decimal"</code>, <code>"percent"</code>, <code>"currency"</code>, <code>"unit"</code> », <code>"decimal"</code>).</li><li>Set <var>intlObj</var>.[[Style]] to <var>style</var>.</li><li>Let <var>currency</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currency"</code>, <code>"string"</code>, <emu-val>undefined</emu-val>, <emu-val>undefined</emu-val>).</li><li>Let <var>currencyDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currencyDisplay"</code>, <code>"string"</code>, « <code>"code"</code>, <code>"symbol"</code>, <code>"narrowSymbol"</code>, <code>"name"</code> », <code>"symbol"</code>).</li><li>Let <var>currencySign</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currencySign"</code>, <code>"string"</code>, « <code>"standard"</code>, <code>"accounting"</code> », <code>"standard"</code>).</li><li>Let <var>unit</var> be ?&nbsp;GetOption(<var>options</var>, <code>"unit"</code>, <code>"string"</code>, <emu-val>undefined</emu-val>, <emu-val>undefined</emu-val>).</li><li>Let <var>unitDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"unitDisplay"</code>, <code>"string"</code>, « <code>"short"</code>, <code>"narrow"</code>, <code>"long"</code> », <code>"short"</code>).</li><li>If <var>style</var> is <code>"currency"</code>, then<ol><li>If <var>currency</var> is <emu-val>undefined</emu-val>, throw a <emu-val>TypeError</emu-val> exception.</li><li>If the result of IsWellFormedCurrencyCode(<var>currency</var>) is <emu-val>false</emu-val>, throw a <emu-val>RangeError</emu-val> exception.</li><li>Let <var>currency</var> be the result of converting <var>currency</var> to upper case as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.</li><li>Set <var>intlObj</var>.[[Currency]] to <var>currency</var>.</li><li>Set <var>intlObj</var>.[[CurrencyDisplay]] to <var>currencyDisplay</var>.</li><li>Set <var>intlObj</var>.[[CurrencySign]] to <var>currencySign</var>.</li></ol></li><li>If <var>style</var> is <code>"percent"</code>, then<ol><li>Let <var>unit</var> be <code>"percent"</code>.</li></ol></li><li>If <var>style</var> is <code>"unit"</code> or <code>"percent"</code>, then<ol><li>If <var>unit</var> is <emu-val>undefined</emu-val>, throw a <emu-val>TypeError</emu-val> exception.</li><li>If the result of IsWellFormedUnitIdentifier(<var>unit</var>) is <emu-val>false</emu-val>, throw a <emu-val>RangeError</emu-val> exception.</li><li>Set <var>intlObj</var>.[[Unit]] to <var>unit</var>.</li><li>Set <var>intlObj</var>.[[UnitDisplay]] to <var>unitDisplay</var>.
+      </li></ol></li></ol></emu-alg>
+    </emu-clause>
+    </ins>
+
+    <ins class="block">
+    <emu-clause id="sec-getnumberformatpattern" aoid="GetNumberFormatPattern">
+      <h1><span class="secnum">1.1.13</span>GetNumberFormatPattern ( <var>numberFormat</var>, <var>x</var>, <var>exponent</var> )</h1>
+      <p>
+        The abstract operation GetNumberFormatPattern considers the resolved unit-related options in the number format object along with the final scaled and rounded number being formatted and returns a pattern, a String value as described in  <emu-xref href="#sec-intl.numberformat-internal-slots" id="_ref_3"><a href="#sec-intl.numberformat-internal-slots">1.3.3</a></emu-xref>. 
+       
+      </p>
+      <emu-alg><ol><li>Let <var>localeData</var> be <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_59"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[LocaleData]].</li><li>Let <var>dataLocale</var> be <var>numberFormat</var>.[[DataLocale]].</li><li>Let <var>dataLocaleData</var> be <var>localeData</var>.[[&lt;<var>dataLocale</var>&gt;]].</li><li>Let <var>patterns</var> be <var>dataLocaleData</var>.[[patterns]].</li><li>Assert: <var>patterns</var> is a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> (see <emu-xref href="#sec-intl.numberformat-internal-slots" id="_ref_4"><a href="#sec-intl.numberformat-internal-slots">1.3.3</a></emu-xref>).</li><li>Let <var>style</var> be <var>numberFormat</var>.[[Style]].</li><li>If <var>style</var> is <code>"unit"</code> or <code>"percent"</code>, then<ol><li>Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</li><li>Let <var>unitDisplay</var> be <var>numberFormat</var>.[[UnitDisplay]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[<code>"unit"</code>]].</li><li>If <var>patterns</var>.[[&lt;<var>unit</var>&gt;]] is <emu-val>undefined</emu-val>, then<ol><li>Let <var>unit</var> be <code>"fallback"</code>.</li></ol></li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>unit</var>&gt;]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>unitDisplay</var>&gt;]].</li></ol></li><li>Else If <var>style</var> is <code>"currency"</code>, then<ol><li>Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</li><li>Let <var>currencyDisplay</var> be <var>numberFormat</var>.[[CurrencyDisplay]].</li><li>Let <var>currencySign</var> be <var>numberFormat</var>.[[CurrencySign]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[<code>"currency"</code>]].</li><li>If <var>patterns</var>.[[&lt;<var>currency</var>&gt;]] is <emu-val>undefined</emu-val>, then<ol><li>Let <var>currency</var> be <code>"fallback"</code>.</li></ol></li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>currency</var>&gt;]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>currencyDisplay</var>&gt;]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>currencySign</var>&gt;]].</li></ol></li><li>Else,<ol><li>Assert: <var>style</var> is <code>"decimal"</code>.</li><li>Let <var>patterns</var> be <var>patterns</var>.[[<code>"decimal"</code>]].</li></ol></li><li>Let <var>signDisplay</var> be <var>numberFormat</var>.[[SignDisplay]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>signDisplay</var>&gt;]].</li><li>Let <var>notation</var> be <var>numberFormat</var>.[[Notation]].</li><li>Let <var>displayNotation</var> be <code>"standard"</code>.</li><li>If <var>notation</var> is <code>"scientific"</code> or <var>notation</var> is <code>"engineering"</code>, then<ol><li>Let <var>displayNotation</var> be <code>"scientific"</code>.</li></ol></li><li>Else If <var>exponent</var> is not 0, then<ol><li>Assert: <var>notation</var> is <code>"compact"</code>.</li><li>Let <var>compactDisplay</var> be <var>numberFormat</var>.[[CompactDisplay]].</li><li>If <var>compactDisplay</var> is <code>"short"</code>, then<ol><li>Let <var>displayNotation</var> be <code>"compactShort"</code>.</li></ol></li><li>Else,<ol><li>Assert: <var>compactDisplay</var> is <code>"long"</code>.</li><li>Let <var>displayNotation</var> be <code>"compactLong"</code>.</li></ol></li></ol></li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>displayNotation</var>&gt;]].</li><li>If <var>x</var> is not <emu-val>NaN</emu-val> and <var>x</var> &lt; 0 or <var>x</var> is <emu-val>-0</emu-val>, then<ol><li>Let <var>pattern</var> be <var>patterns</var>.[[negativePattern]].</li></ol></li><li>Else If <var>x</var> is 0, then<ol><li>Let <var>pattern</var> be <var>patterns</var>.[[zeroPattern]].</li></ol></li><li>Else,<ol><li>Let <var>pattern</var> be <var>patterns</var>.[[positivePattern]].</li></ol></li><li>Return <var>pattern</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+    </ins>
+
+    <ins class="block">
+    <emu-clause id="sec-computeexponent" aoid="ComputeExponent">
+      <h1><span class="secnum">1.1.14</span>ComputeExponent ( <var>numberFormat</var>, <var>x</var> )</h1>
+      <p>
+        The abstract operation ComputeExponent computes an exponent (power of ten) by which to scale <var>x</var> according to the number formatting settings.  It handles cases such as 999 rounding up to 1000, requiring a different exponent.
+      
+      </p>
+      <emu-alg><ol><li>If <var>x</var> = 0, then<ol><li>Return 0.</li></ol></li><li>If <var>x</var> &lt; 0, then<ol><li>Let <var>x</var> = -<var>x</var>.</li></ol></li><li>Let <var>magnitude</var> be the base 10 logarithm of <var>x</var> rounded down to the nearest integer.</li><li>Let <var>exponent</var> be <emu-xref aoid="ComputeExponentForMagnitude" id="_ref_60"><a href="#sec-computeexponentformagnitude">ComputeExponentForMagnitude</a></emu-xref>(<var>numberFormat</var>, <var>magnitude</var>).</li><li>Let <var>x</var> be <var>x</var> × 10<sup>-<var>exponent</var></sup>.</li><li>Let <var>formatNumberResult</var> be <emu-xref aoid="FormatNumberToString" id="_ref_61"><a href="#sec-formatnumberstring">FormatNumberToString</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>If <var>formatNumberResult</var>.[[RoundedNumber]] = 0, then<ol><li>Return <var>exponent</var>.</li></ol></li><li>Let <var>newMagnitude</var> be the base 10 logarithm of <var>x</var> rounded down to the nearest integer.</li><li>If <var>newMagnitude</var> is <var>magnitude</var> – <var>exponent</var>, then<ol><li>Return <var>exponent</var>.</li></ol></li><li>Return <emu-xref aoid="ComputeExponentForMagnitude" id="_ref_62"><a href="#sec-computeexponentformagnitude">ComputeExponentForMagnitude</a></emu-xref>(<var>numberFormat</var>, <var>magnitude</var> + 1).
+      </li></ol></emu-alg>
+    </emu-clause>
+    </ins>
+
+    <ins class="block">
+    <emu-clause id="sec-computeexponentformagnitude" aoid="ComputeExponentForMagnitude">
+      <h1><span class="secnum">1.1.15</span>ComputeExponentForMagnitude ( <var>numberFormat</var>, <var>magnitude</var> )</h1>
+      <p>
+        The abstract operation ComputeExponentHelper computes an exponent by which to scale a number of the given magnitude (power of ten of the most significant digit) according to the locale and the desired notation (scientific, engineering, or compact).
+      
+      </p>
+      <emu-alg><ol><li>Let <var>notation</var> be <var>numberFormat</var>.[[Notation]].</li><li>If <var>notation</var> is <code>"standard"</code>, then<ol><li>Return 0.</li></ol></li><li>Else If <var>notation</var> is <code>"scientific"</code>, then<ol><li>Return <var>magnitude</var>.</li></ol></li><li>Else If <var>notation</var> is <code>"engineering"</code>, then<ol><li>Let <var>thousands</var> be the greatest integer that is not greater than <var>magnitude</var> ÷ 3.</li><li>Return <var>thousands</var> × 3.</li></ol></li><li>Else,<ol><li>Assert: <var>notation</var> is <code>"compact"</code>.</li><li>Let <var>exponent</var> be an implementation-dependent integer by which to scale a number of the given magnitude in compact notation for the current locale.</li><li>Return <var>exponent</var>.
+      </li></ol></li></ol></emu-alg>
+    </emu-clause>
+    </ins>
+  </emu-clause>
+
+  <emu-clause id="sec-intl-numberformat-constructor">
+    <h1><span class="secnum">1.2</span>The Intl.NumberFormat Constructor</h1>
+
+    <p>
+      The NumberFormat constructor is the  <dfn>%NumberFormat%</dfn> intrinsic object and a standard built-in property of the Intl object. Behaviour common to all service constructor properties of the Intl object is specified in  <emu-xref href="#sec-internal-slots"></emu-xref>.
+    
+    </p>
+
+    <emu-clause id="sec-intl.numberformat">
+      <h1><span class="secnum">1.2.1</span>Intl.NumberFormat ( [ <var>locales</var> [ , <var>options</var> ] ] )</h1>
+
+      <p>
+        When the <code>Intl.NumberFormat</code> function is called with optional arguments <var>locales</var> and <var>options</var>, the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If NewTarget is <emu-val>undefined</emu-val>, let <var>newTarget</var> be the <emu-xref href="#active-function-object"><a href="https://tc39.github.io/ecma262/#active-function-object">active function object</a></emu-xref>, else let <var>newTarget</var> be NewTarget.</li><li>Let <var>numberFormat</var> be ?&nbsp;<emu-xref aoid="OrdinaryCreateFromConstructor" id="_ref_63"><a href="https://tc39.github.io/ecma262/#sec-ordinarycreatefromconstructor">OrdinaryCreateFromConstructor</a></emu-xref>(<var>newTarget</var>, <code>"%NumberFormatPrototype%"</code>, « [[InitializedNumberFormat]], [[Locale]], <ins>[[DataLocale]],</ins> [[NumberingSystem]], [[Style]], <ins>[[Unit]], [[UnitDisplay]],</ins> [[Currency]], [[CurrencyDisplay]], <ins>[[CurrencySign]],</ins> [[MinimumIntegerDigits]], [[MinimumFractionDigits]], [[MaximumFractionDigits]], [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], <ins>[[RoundingType]], [[Notation]], [[CompactDisplay]],</ins> [[UseGrouping]], <ins>[[SignDisplay]],</ins> <del>[[PositivePattern]], [[NegativePattern]],</del> [[BoundFormat]] »).</li><li>Perform ?&nbsp;<emu-xref aoid="InitializeNumberFormat" id="_ref_64"><a href="#sec-initializenumberformat">InitializeNumberFormat</a></emu-xref>(<var>numberFormat</var>, <var>locales</var>, <var>options</var>).
+      </li></ol></emu-alg>
+      <emu-normative-optional>
+      <emu-alg><ol start="4"><li>Let <var>this</var> be the <emu-val>this</emu-val> value.</li><li>If NewTarget is <emu-val>undefined</emu-val> and ?&nbsp;<emu-xref aoid="InstanceofOperator" id="_ref_65"><a href="https://tc39.github.io/ecma262/#sec-instanceofoperator">InstanceofOperator</a></emu-xref>(<var>this</var>, <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_66"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>) is <emu-val>true</emu-val>, then<ol><li>Perform ?&nbsp;<emu-xref aoid="DefinePropertyOrThrow" id="_ref_67"><a href="https://tc39.github.io/ecma262/#sec-definepropertyorthrow">DefinePropertyOrThrow</a></emu-xref>(<var>this</var>, %Intl%.[[FallbackSymbol]], PropertyDescriptor{ [[Value]]: <var>numberFormat</var>, [[Writable]]: <emu-val>false</emu-val>, [[Enumerable]]: <emu-val>false</emu-val>, [[Configurable]]: <emu-val>false</emu-val> }).</li><li>Return <var>this</var>.
+      </li></ol></li></ol></emu-alg>
+      </emu-normative-optional>
+      <emu-alg><ol start="6"><li>Return <var>numberFormat</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+    <emu-note><span class="note">Note</span><div class="note-contents">See  <emu-xref href="#legacy-constructor"></emu-xref> for the motivation of the normative optional text.</div></emu-note>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-constructor">
+    <h1><span class="secnum">1.3</span>Properties of the Intl.NumberFormat Constructor</h1>
+
+    <p>
+      The Intl.NumberFormat constructor has the following properties:
+    
+    </p>
+
+    <emu-clause id="sec-intl.numberformat.prototype">
+      <h1><span class="secnum">1.3.1</span>Intl.NumberFormat.prototype</h1>
+
+      <p>
+        The value of <code>Intl.NumberFormat.prototype</code> is <emu-xref href="#sec-properties-of-intl-numberformat-prototype-object" id="_ref_68"><a href="#sec-properties-of-intl-numberformat-prototype-object">%NumberFormatPrototype%</a></emu-xref>.
+      
+      </p>
+      <p>
+        This property has the attributes { [[Writable]]: <emu-val>false</emu-val>, [[Enumerable]]: <emu-val>false</emu-val>, [[Configurable]]: <emu-val>false</emu-val> }.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.supportedlocalesof">
+      <h1><span class="secnum">1.3.2</span>Intl.NumberFormat.supportedLocalesOf ( <var>locales</var> [ , <var>options</var> ] )</h1>
+
+      <p>
+        When the <code>supportedLocalesOf</code> method is called with arguments <var>locales</var> and <var>options</var>, the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>availableLocales</var> be <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_69"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[AvailableLocales]].</li><li>Let <var>requestedLocales</var> be ?&nbsp;CanonicalizeLocaleList(<var>locales</var>).</li><li>Return ?&nbsp;SupportedLocales(<var>availableLocales</var>, <var>requestedLocales</var>, <var>options</var>).
+      </li></ol></emu-alg>
+
+      <p>
+        The value of the <code>length</code> property of the <emu-val>supportedLocalesOf</emu-val> method is 1.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat-internal-slots">
+      <h1><span class="secnum">1.3.3</span>Internal slots</h1>
+
+      <p>
+        The value of the [[AvailableLocales]] internal slot is implementation defined within the constraints described in  <emu-xref href="#sec-internal-slots"></emu-xref>.
+      
+      </p>
+
+      <p>
+        The value of the [[RelevantExtensionKeys]] internal slot is « <code>"nu"</code> ».
+      
+      </p>
+
+      <emu-note><span class="note">Note 1</span><div class="note-contents">
+        Unicode Technical Standard 35 describes two locale extension keys that are relevant to number formatting, <code>"nu"</code> for numbering system and <code>"cu"</code> for currency. Intl.NumberFormat, however, requires that the currency of a currency format is specified through the currency property in the options objects.
+      
+      </div></emu-note>
+
+      <p>
+        The value of the [[LocaleData]] internal slot is implementation defined within the constraints described in  <emu-xref href="#sec-internal-slots"></emu-xref> and the following additional constraints:
+      
+      </p>
+
+      <ul>
+        <li>The list that is the value of the <code>"nu"</code> field of any locale field of [[LocaleData]] must not include the values <code>"native"</code>, <code>"traditio"</code>, or <code>"finance"</code>.</li>
+        <li>[[LocaleData]][locale] must have a patterns field for all locale values. The value of this field must be a  <del>record</del><ins><emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref></ins>, which must have  <del>fields with the names of the three number format styles: <code>"decimal"</code>, <code>"percent"</code>, and <code>"currency"</code>. Each of these fields in turn must be a record with the fields positivePattern and negativePattern.</del> <ins>three fields: <code>"decimal"</code>, <code>"currency"</code>, and <code>"unit"</code>.</ins></li>
+        <li><ins class="block">The two fields <code>"currency"</code> and <code>"unit"</code> noted above must be Records with at least one field, <code>"fallback"</code>. The <code>"currency"</code> may have additional fields with keys corresponding to currency codes according to  <emu-xref href="#sec-currency-codes"></emu-xref>.  Each field of <code>"currency"</code> must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with fields corresponding to the possible currencyDisplay values: <code>"code"</code>, <code>"symbol"</code>, <code>"narrowSymbol"</code>, and <code>"name"</code>.  Each of those fields must contain a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with fields corresponding to the possible currencySign values: <code>"standard"</code> or <code>"accounting"</code>.  The <code>"unit"</code> field (of [[LocaleData]][locale]) may have additional fields beyond the required field <code>"fallback"</code> with keys corresponding to measurement core unit identifiers corresponding to  <emu-xref href="#sec-measurement-unit-identifiers"></emu-xref>.  Each field of <code>"unit"</code> must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with fields corresponding to the possible unitDisplay values: <code>"narrow"</code>, <code>"short"</code>, and <code>"long"</code>.</ins></li>
+        <li><ins class="block">All of the leaf fields so far described for the patterns tree (<code>"decimal"</code>, great-grandchildren of <code>"currency"</code>, and grandchildren of <code>"unit"</code>) must be Records with fields corresponding to the possible signDisplay values: <code>"auto"</code>, <code>"always"</code>, <code>"never"</code>, and <code>"exceptZero"</code>.  Each of these fields must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with the keys <code>"standard"</code>, <code>"scientific"</code>, <code>"compactShort"</code>, and <code>"compactLong"</code>.  Each of these fields must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with the keys <code>"positivePattern"</code>, <code>"zeroPattern"</code>, and <code>"negativePattern"</code>.</ins></li>
+        <li>The value of  <del>these fields</del> <ins>the aforementioned fields (the sign-dependent pattern fields)</ins> must be string values that must contain the substring <code>"{number}"</code> and may contain the substrings <code>"{plusSign}"</code>,  <del>and</del> <code>"{minusSign}"</code><ins>, <code>"{compactSymbol}"</code>, <code>"{compactName}"</code>, <code>"{scientificSeparator}"</code>, and <code>"{scientificExponent}"</code></ins>;  <del>the values within the percent field must also contain the substring <code>"{percentSign}"</code>;</del> the values within the  <del>currency</del><ins><code>"currency"</code></ins> field must also contain  <del>the substring <code>"{currency}"</code></del> <ins>one of the following substrings: <code>"{currencyCode}"</code>, <code>"{currencySymbol}"</code>, <code>"{currencyNarrowSymbol}"</code>, or <code>"{currencyName}"</code>; and the values within the <code>"unit"</code> field must also contain one of the following substrings: <code>"{percentSign}"</code>, <code>"{unitSymbol}"</code>, <code>"{unitNarrowSymbol}"</code>, or <code>"{unitName}"</code></ins>. The pattern strings must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.</li>
+      </ul>
+
+      <emu-note><span class="note">Note 2</span><div class="note-contents">
+        It is recommended that implementations use the locale data provided by the Common Locale Data Repository (available at  <a href="http://cldr.unicode.org/">http://cldr.unicode.org/</a>).
+      
+      </div></emu-note>
+    </emu-clause>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-prototype-object">
+    <h1><span class="secnum">1.4</span>Properties of the Intl.NumberFormat Prototype Object</h1>
+
+    <p>
+      The Intl.NumberFormat prototype object is itself an ordinary object.  <dfn>%NumberFormatPrototype%</dfn> is not an Intl.NumberFormat instance and does not have an [[InitializedNumberFormat]] internal slot or any of the other internal slots of Intl.NumberFormat instance objects.
+    
+    </p>
+
+    <emu-clause id="sec-intl.numberformat.prototype.constructor">
+      <h1><span class="secnum">1.4.1</span>Intl.NumberFormat.prototype.constructor</h1>
+
+      <p>
+        The initial value of <code>Intl.NumberFormat.prototype.constructor</code> is the intrinsic object <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_70"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype-@@tostringtag">
+      <h1><span class="secnum">1.4.2</span>Intl.NumberFormat.prototype [ @@toStringTag ]</h1>
+
+      <p>
+        The initial value of the @@toStringTag property is the string value <code>"Object"</code>.
+      
+      </p>
+      <p>
+        This property has the attributes { [[Writable]]: <emu-val>false</emu-val>, [[Enumerable]]: <emu-val>false</emu-val>, [[Configurable]]: <emu-val>true</emu-val> }.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.format">
+      <h1><span class="secnum">1.4.3</span>get Intl.NumberFormat.prototype.format</h1>
+
+      <p>
+        Intl.NumberFormat.prototype.format is an accessor property whose set accessor function is <emu-val>undefined</emu-val>. Its get accessor function performs the following steps:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be the <emu-val>this</emu-val> value.</li><li>If <emu-xref aoid="Type" id="_ref_71"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object, throw a <emu-val>TypeError</emu-val> exception.</li><li>Let <var>nf</var> be ?&nbsp;<emu-xref aoid="UnwrapNumberFormat" id="_ref_72"><a href="#sec-unwrapnumberformat">UnwrapNumberFormat</a></emu-xref>(<var>nf</var>).</li><li>If <var>nf</var>.[[BoundFormat]] is <emu-val>undefined</emu-val>, then<ol><li>Let <var>F</var> be a new built-in function object as defined in Number Format Functions (<emu-xref href="#sec-number-format-functions" id="_ref_5"><a href="#sec-number-format-functions">1.1.4</a></emu-xref>).</li><li>Set <var>F</var>.[[NumberFormat]] to <var>nf</var>.</li><li>Set <var>nf</var>.[[BoundFormat]] to <var>F</var>.</li></ol></li><li>Return <var>nf</var>.[[BoundFormat]].
+      </li></ol></emu-alg>
+
+      <emu-note><span class="note">Note</span><div class="note-contents">
+        The returned function is bound to <var>nf</var> so that it can be passed directly to <code>Array.prototype.map</code> or other functions.
+        This is considered a historical artefact, as part of a convention which is no longer followed for new features, but is preserved to maintain compatibility with existing programs.
+      
+      </div></emu-note>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.formattoparts">
+      <h1><span class="secnum">1.4.4</span>Intl.NumberFormat.prototype.formatToParts ( <var>value</var> )</h1>
+
+      <p>
+        When the <code>formatToParts</code> method is called with an optional argument <var>value</var>, the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be the <emu-val>this</emu-val> value.</li><li>If <emu-xref aoid="Type" id="_ref_73"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object, throw a <emu-val>TypeError</emu-val> exception.</li><li>If <var>nf</var> does not have an [[InitializedNumberFormat]] internal slot, throw a <emu-val>TypeError</emu-val> exception.</li><li>Let <var>x</var> be ?&nbsp;<emu-xref aoid="ToNumber" id="_ref_74"><a href="https://tc39.github.io/ecma262/#sec-tonumber">ToNumber</a></emu-xref>(<var>value</var>).</li><li>Return ?&nbsp;<emu-xref aoid="FormatNumberToParts" id="_ref_75"><a href="#sec-formatnumbertoparts">FormatNumberToParts</a></emu-xref>(<var>nf</var>, <var>x</var>).
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.resolvedoptions">
+      <h1><span class="secnum">1.4.5</span>Intl.NumberFormat.prototype.resolvedOptions ()</h1>
+
+      <p>
+        This function provides access to the locale and formatting options computed during initialization of the object.
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be <emu-val>this</emu-val> value.</li><li>If <emu-xref aoid="Type" id="_ref_76"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object, throw a <emu-val>TypeError</emu-val> exception.</li><li>Let <var>nf</var> be ?&nbsp;<emu-xref aoid="UnwrapNumberFormat" id="_ref_77"><a href="#sec-unwrapnumberformat">UnwrapNumberFormat</a></emu-xref>(<var>nf</var>).</li><li>Let <var>options</var> be !&nbsp;<emu-xref aoid="ObjectCreate" id="_ref_78"><a href="https://tc39.github.io/ecma262/#sec-objectcreate">ObjectCreate</a></emu-xref>(<emu-xref href="#sec-properties-of-the-object-prototype-object"><a href="https://tc39.github.io/ecma262/#sec-properties-of-the-object-prototype-object">%ObjectPrototype%</a></emu-xref>).</li><li>For each row of <emu-xref href="#table-numberformat-resolvedoptions-properties" id="_ref_6"><a href="#table-numberformat-resolvedoptions-properties">Table 2</a></emu-xref>, except the header row, in table order, do<ol><li>Let <var>p</var> be the Property value of the current row.</li><li>Let <var>v</var> be the value of <var>nf</var>'s internal slot whose name is the Internal Slot value of the current row.</li><li>If <var>v</var> is not <emu-val>undefined</emu-val>, then<ol><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_79"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>options</var>, <var>p</var>, <var>v</var>).</li></ol></li></ol></li><li>Return <var>options</var>.
+      </li></ol></emu-alg>
+
+      <emu-table id="table-numberformat-resolvedoptions-properties"><figure><figcaption>Table 2: Resolved Options of NumberFormat Instances</figcaption>
+        
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Internal Slot</th>
+              <th>Property</th>
+            </tr>
+          </thead>
+          <tbody><tr>
+            <td>[[Locale]]</td>
+            <td><code>"locale"</code></td>
+          </tr>
+          <tr>
+            <td>[[NumberingSystem]]</td>
+            <td><code>"numberingSystem"</code></td>
+          </tr>
+          <tr>
+            <td>[[Style]]</td>
+            <td><code>"style"</code></td>
+          </tr>
+          <tr>
+            <td>[[Currency]]</td>
+            <td><code>"currency"</code></td>
+          </tr>
+          <tr>
+            <td>[[CurrencyDisplay]]</td>
+            <td><code>"currencyDisplay"</code></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[CurrencySign]]</ins></td>
+            <td><ins class="block"><code>"currencySign"</code></ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[Unit]]</ins></td>
+            <td><ins class="block"><code>"unit"</code></ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[UnitDisplay]]</ins></td>
+            <td><ins class="block"><code>"unitDisplay"</code></ins></td>
+          </tr>
+          <tr>
+            <td>[[MinimumIntegerDigits]]</td>
+            <td><code>"minimumIntegerDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MinimumFractionDigits]]</td>
+            <td><code>"minimumFractionDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MaximumFractionDigits]]</td>
+            <td><code>"maximumFractionDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MinimumSignificantDigits]]</td>
+            <td><code>"minimumSignificantDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MaximumSignificantDigits]]</td>
+            <td><code>"maximumSignificantDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[UseGrouping]]</td>
+            <td><code>"useGrouping"</code></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[Notation]]</ins></td>
+            <td><ins class="block"><code>"notation"</code></ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[CompactDisplay]]</ins></td>
+            <td><ins class="block"><code>"compactDisplay"</code></ins></td>
+          </tr>
+          <tr>
+            <td><ins class="block">[[SignDisplay]]</ins></td>
+            <td><ins class="block"><code>"signDisplay"</code></ins></td>
+          </tr>
+        </tbody></table>
+      </figure></emu-table>
+    </emu-clause>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-instances">
+    <h1><span class="secnum">1.5</span>Properties of Intl.NumberFormat Instances</h1>
+
+    <p>
+      Intl.NumberFormat instances inherit properties from <emu-xref href="#sec-properties-of-intl-numberformat-prototype-object" id="_ref_80"><a href="#sec-properties-of-intl-numberformat-prototype-object">%NumberFormatPrototype%</a></emu-xref>.
+    
+    </p>
+
+    <p>
+      Intl.NumberFormat instances have an [[InitializedNumberFormat]] internal slot.
+    
+    </p>
+
+    <p>
+      Intl.NumberFormat instances also have several internal slots that are computed by the constructor:
+    
+    </p>
+
+    <ul>
+      <li>[[Locale]] is a String value with the language tag of the locale whose localization is used for formatting.</li>
+      <li><ins class="block">[[DataLocale]] is a String value with the language tag of the nearest locale for which the implementation has data to perform the formatting operation. It will be a parent locale of [[Locale]].</ins></li>
+      <li>[[NumberingSystem]] is a String value with the "type" given in Unicode Technical Standard 35 for the numbering system used for formatting.</li>
+      <li>[[Style]] is one of the String values <code>"decimal"</code>, <code>"currency"</code>,  <del>or</del> <code>"percent"</code><ins>, or <code>"unit"</code></ins>, identifying  <del>the number format style used</del><ins>the type of quantity being measured</ins>.</li>
+      <li>[[Currency]] is a String value with the currency code identifying the currency to be used if formatting with the <code>"currency"</code>  <del>style</del><ins>unit type</ins>. It is only used when [[Style]] has the value <code>"currency"</code>.</li>
+      <li>[[CurrencyDisplay]] is one of the String values <code>"code"</code>, <code>"symbol"</code>,  <ins><code>"narrowSymbol"</code>,</ins> or <code>"name"</code>, specifying whether to display the currency as an ISO 4217 alphabetic currency code, a localized currency symbol, or a localized currency name if formatting with the <code>"currency"</code> style. It is only used when [[Style]] has the value <code>"currency"</code>.</li>
+      <li><ins class="block">[[CurrencySign]] is one of the String values <code>"standard"</code> or <code>"accounting"</code>, specifying whether to render negative numbers in accounting format, often signified by parenthesis. It is only used when [[Style]] has the value <code>"currency"</code> and when [[SignDisplay]] is not <code>"never"</code>.</ins></li>
+      <li><ins class="block">[[Unit]] is a core unit identifier, as defined by Unicode Technical Standard #35, Part 2, Section 6. It is only used when [[Style]] has the value <code>"unit"</code> or <code>"percent"</code>.</ins></li>
+      <li><ins class="block">[[UnitDisplay]] is one of the String values <code>"short"</code>, <code>"narrow"</code>, or <code>"long"</code>, specifying whether to display the unit as a symbol, narrow symbol, or localized long name if formatting with the <code>"unit"</code> or <code>"percent"</code> style. It is only used when [[Style]] has the value <code>"unit"</code> or <code>"percent"</code>.</ins></li>
+      <li>[[MinimumIntegerDigits]] is a non-negative integer Number value indicating the minimum integer digits to be used. Numbers will be padded with leading zeroes if necessary.</li>
+      <li>[[MinimumFractionDigits]] and [[MaximumFractionDigits]] are non-negative integer Number values indicating the minimum and maximum fraction digits to be used. Numbers will be rounded or padded with trailing zeroes if necessary.  <ins>These properties are only used when [[RoundingType]] is <code>"fractionDigits"</code>.</ins></li>
+      <li>[[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] are positive integer Number values indicating the minimum and maximum fraction digits to be shown.  <del>Either none or both of these properties are present; if they are, they override minimum and maximum integer and fraction digits –</del> <ins>If present,</ins> the formatter uses however many  <del>integer and</del> fraction digits are required to display the specified number of significant digits.  <ins>These properties are only used when [[RoundingType]] is <code>"significantDigits"</code>.</ins></li>
+      <li>[[UseGrouping]] is a Boolean value indicating whether a grouping separator should be used.</li>
+      <li><ins class="block">[[RoundingType]] is one of the String values <code>"fractionDigits"</code>, <code>"significantDigits"</code>, or <code>"compactRounding"</code>, indicating which rounding strategy to use. If <code>"fractionDigits"</code>, the number is rounded according to [[MinimumFractionDigits]] and [[MaximumFractionDigits]], as described above. If <code>"significantDigits"</code>, the number is rounded according to [[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] as described above. If <code>"compactRounding"</code>, the number is rounded to 1 maximum fraction digit if there is 1 digit before the decimal separator, and otherwise round to 0 fraction digits.</ins></li>
+      <li><ins class="block">[[Notation]]  is one of the String values <code>"standard"</code>, <code>"scientific"</code>, <code>"engineering"</code>, or <code>"compact"</code>, specifying whether the number should be displayed without scaling, scaled to the units place with the power of ten in scientific notation, scaled to the nearest thousand with the power of ten in scientific notation, or scaled to the nearest locale-dependent compact decimal notation power of ten with the corresponding compact decimal notation affix.</ins></li>
+      <li><ins class="block">[[CompactDisplay]] is one of the String values <code>"short"</code> or <code>"long"</code>, specifying whether to display compact notation affixes in short form ("5K") or long form ("5 thousand") if formatting with the <code>"compact"</code> notation. It is only used when [[Notation]] has the value <code>"compact"</code>.</ins></li>
+      <li><ins class="block">[[SignDisplay]] is one of the String values <code>"auto"</code>, <code>"always"</code>, <code>"never"</code>, or <code>"exceptZero"</code>, specifying whether to show the sign on negative numbers only, positive and negative numbers including zero, neither positive nor negative numbers, or positive and negative numbers but not zero.</ins></li>
+      <li><del class="block">[[PositivePattern]] and [[NegativePattern]] are String values as described in  <emu-xref href="#sec-intl.numberformat-internal-slots" id="_ref_7"><a href="#sec-intl.numberformat-internal-slots">1.3.3</a></emu-xref>.</del></li>
+    </ul>
+
+    <p>
+      Finally, Intl.NumberFormat instances have a [[BoundFormat]] internal slot that caches the function returned by the format accessor (<emu-xref href="#sec-intl.numberformat.prototype.format" id="_ref_8"><a href="#sec-intl.numberformat.prototype.format">1.4.3</a></emu-xref>).
+    
+    </p>
+  </emu-clause>
+</emu-clause>
+</div></body>
\ No newline at end of file
diff --git a/numberformat_proposed.html b/section11/numberformat_proposed.html
similarity index 56%
rename from numberformat_proposed.html
rename to section11/numberformat_proposed.html
index 979c8f5..8c3049d 100644
--- a/numberformat_proposed.html
+++ b/section11/numberformat_proposed.html
@@ -14,22 +14,33 @@ <h1>SetNumberFormatDigitOptions ( _intlObj_, _options_, _mnfdDefault_, _mxfdDefa
       <emu-alg>
         1. Assert: Type(_intlObj_) is Object.
         1. Assert: Type(_options_) is Object.
-        1. Assert: type(_mnfdDefault_) is Number.
-        1. Assert: type(_mxfdDefault_) is Number.
+        1. Assert: Type(_mnfdDefault_) is Number.
+        1. Assert: Type(_mxfdDefault_) is Number.
         1. Let _mnid_ be ? GetNumberOption(_options_, `"minimumIntegerDigits,"`, 1, 21, 1).
-        1. Let _mnfd_ be ? GetNumberOption(_options_, `"minimumFractionDigits"`, 0, 20, _mnfdDefault_).
-        1. Let _mxfdActualDefault_ be max( _mnfd_, _mxfdDefault_ ).
-        1. Let _mxfd_ be ? GetNumberOption(_options_, `"maximumFractionDigits"`, _mnfd_, 20, _mxfdActualDefault_).
+        1. Let _mnfd_ be ? Get(_options_, `"minimumFractionDigits"`).
+        1. Let _mxfd_ be ? Get(_options_, `"maximumFractionDigits"`).
         1. Let _mnsd_ be ? Get(_options_, `"minimumSignificantDigits"`).
         1. Let _mxsd_ be ? Get(_options_, `"maximumSignificantDigits"`).
-        1. Set _intlObj_.[[MinimumIntegerDigits]] to mnid.
-        1. Set _intlObj_.[[MinimumFractionDigits]] to mnfd.
-        1. Set _intlObj_.[[MaximumFractionDigits]] to mxfd.
+        1. Set _intlObj_.[[MinimumIntegerDigits]] to _mnid_.
         1. If _mnsd_ is not *undefined* or _mxsd_ is not *undefined*, then
+          1. Set _intlObj_.[[RoundingType]] to `"significantDigits"`.
           1. Let _mnsd_ be ? DefaultNumberOption(_mnsd_, 1, 21, 1).
           1. Let _mxsd_ be ? DefaultNumberOption(_mxsd_, _mnsd_, 21, 21).
-          1. Set _intlObj_.[[MinimumSignificantDigits]] to mnsd.
-          1. Set _intlObj_.[[MaximumSignificantDigits]] to mxsd.
+          1. Set _intlObj_.[[MinimumSignificantDigits]] to _mnsd_.
+          1. Set _intlObj_.[[MaximumSignificantDigits]] to _mxsd_.
+        1. Else If _mnfd_ is not *undefined* or _mxfd_ is not *undefined*, then
+          1. Set _intlObj_.[[RoundingType]] to `"fractionDigits"`.
+          1. Let _mnfd_ be ? DefaultNumberOption(_mnfd_, 0, 20, _mnfdDefault_).
+          1. Let _mxfdActualDefault_ be max( _mnfd_, _mxfdDefault_ ).
+          1. Let _mxfd_ be ? DefaultNumberOption(_mxfd_, _mnfd_, 20, _mxfdActualDefault_).
+          1. Set _intlObj_.[[MinimumFractionDigits]] to _mnfd_.
+          1. Set _intlObj_.[[MaximumFractionDigits]] to _mxfd_.
+        1. Else If _intlObj_.[[Notation]] is `"compact"`, then
+          1. Set _intlObj_.[[RoundingType]] to `"compactRounding"`.
+        1. Else,
+          1. Set _intlObj_.[[RoundingType]] to `"fractionDigits"`.
+          1. Set _intlObj_.[[MinimumFractionDigits]] to _mnfdDefault_.
+          1. Set _intlObj_.[[MaximumFractionDigits]] to _mxfdDefault_.
       </emu-alg>
     </emu-clause>
 
@@ -52,21 +63,13 @@ <h1>InitializeNumberFormat ( _numberFormat_, _locales_, _options_ )</h1>
         1. Let _localeData_ be %NumberFormat%.[[LocaleData]].
         1. Let _r_ be ResolveLocale(%NumberFormat%.[[AvailableLocales]], _requestedLocales_, _opt_, %NumberFormat%.[[RelevantExtensionKeys]], _localeData_).
         1. Set _numberFormat_.[[Locale]] to _r_.[[locale]].
+        1. Set _numberFormat_.[[DataLocale]] to _r_.[[dataLocale]].
         1. Set _numberFormat_.[[NumberingSystem]] to _r_.[[nu]].
-        1. Let _dataLocale_ be _r_.[[dataLocale]].
-        1. Let _style_ be ? GetOption(_options_, `"style"`, `"string"`, &laquo; `"decimal"`, `"percent"`, `"currency"` &raquo;, `"decimal"`).
-        1. Set _numberFormat_.[[Style]] to _style_.
-        1. Let _currency_ be ? GetOption(_options_, `"currency"`, `"string"`, *undefined*, *undefined*).
-        1. If _currency_ is not *undefined*, then
-          1. If the result of IsWellFormedCurrencyCode(_currency_) is *false*, throw a *RangeError* exception.
-        1. If _style_ is `"currency"` and _currency_ is *undefined*, throw a *TypeError* exception.
+        1. Perform ? SetNumberFormatUnitOptions(_numberFormat_, _options_).
+        1. Let _style_ be _numberFormat_.[[Style]].
         1. If _style_ is `"currency"`, then
-          1. Let _currency_ be the result of converting _currency_ to upper case as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
-          1. Set _numberFormat_.[[Currency]] to _currency_.
+          1. Let _currency_ be _numberFormat_.[[Currency]].
           1. Let _cDigits_ be CurrencyDigits(_currency_).
-        1. Let _currencyDisplay_ be ? GetOption(_options_, `"currencyDisplay"`, `"string"`, &laquo; `"code"`, `"symbol"`, `"name"` &raquo;, `"symbol"`).
-        1. If _style_ is `"currency"`, set _numberFormat_.[[CurrencyDisplay]] to _currencyDisplay_.
-        1. If _style_ is `"currency"`, then
           1. Let _mnfdDefault_ be _cDigits_.
           1. Let _mxfdDefault_ be _cDigits_.
         1. Else,
@@ -75,15 +78,16 @@ <h1>InitializeNumberFormat ( _numberFormat_, _locales_, _options_ )</h1>
             1. Let _mxfdDefault_ be 0.
           1. Else,
             1. Let _mxfdDefault_ be 3.
+        1. Let _notation_ be ? GetOption(_options_, `"notation"`, `"string"`, &laquo; `"standard"`, `"scientific"`, `"engineering"`, `"compact"` &raquo;, `"standard"`).
+        1. Set _numberFormat_.[[Notation]] to _notation_.
         1. Perform ? SetNumberFormatDigitOptions(_numberFormat_, _options_, _mnfdDefault_, _mxfdDefault_).
+        1. Let _compactDisplay_ be ? GetOption(_options_, `"compactDisplay"`, `"string"`, &laquo; `"short"`, `"long"` &raquo;, `"short"`).
+        1. If _notation_ is `"compact"`, then
+          1. Set _numberFormat_.[[CompactDisplay]] to _compactDisplay_.
         1. Let _useGrouping_ be ? GetOption(_options_, `"useGrouping"`, `"boolean"`, *undefined*, *true*).
         1. Set _numberFormat_.[[UseGrouping]] to _useGrouping_.
-        1. Let _dataLocaleData_ be _localeData_.[[&lt;_dataLocale_&gt;]].
-        1. Let _patterns_ be _dataLocaleData_.[[patterns]].
-        1. Assert: _patterns_ is a record (see <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>).
-        1. Let _stylePatterns_ be _patterns_.[[&lt;_style_&gt;]].
-        1. Set _numberFormat_.[[PositivePattern]] to _stylePatterns_.[[positivePattern]].
-        1. Set _numberFormat_.[[NegativePattern]] to _stylePatterns_.[[negativePattern]].
+        1. Let _signDisplay_ be ? GetOption(_options_, `"signDisplay"`, `"string"`, &laquo; `"auto"`, `"never"`, `"always"`, `"exceptZero"` &raquo;, `"auto"`).
+        1. Set _numberFormat_.[[SignDisplay]] to _signDisplay_.
         1. Return _numberFormat_.
       </emu-alg>
     </emu-clause>
@@ -123,15 +127,32 @@ <h1>Number Format Functions</h1>
       <h1>FormatNumberToString ( _intlObject_, _x_ )</h1>
 
       <p>
-        The FormatNumberToString abstract operation is called with arguments _intlObject_ (which must be an object with [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], and [[MaximumFractionDigits]] internal slots), and _x_ (which must be a Number value), and returns _x_ as a string value with digits formatted according to the five formatting parameters.
+        The FormatNumberToString abstract operation is called with arguments _intlObject_ (which must be an object with [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], and [[MaximumFractionDigits]] internal slots), and _x_ (which must be a Number value), and returns a Record containing two values: _x_ as a string value with digits formatted according to the five formatting parameters in the field [[FormattedString]], and the final floating decimal value of _x_ after rounding has been performed in the field [[RoundedNumber]].
       </p>
 
       <emu-alg>
-        1. If _intlObject_.[[MinimumSignificantDigits]] and _intlObject_.[[MaximumSignificantDigits]] are both not *undefined*, then
+        1. Let _isNegative_ be _x_ &lt; 0 or _x_ is *-0*.
+        1. If _isNegative_, then
+          1. Let _x_ be -_x_.
+        1. If _intlObject_.[[RoundingType]] is `"significantDigits"`, then
           1. Let _result_ be ToRawPrecision(_x_, _intlObject_.[[MinimumSignificantDigits]], _intlObject_.[[MaximumSignificantDigits]]).
+        1. Else If _intlObject_.[[RoundingType]] is `"fractionDigits"`, then,
+          1. Let _result_ be ToRawFixed(_x_, _intlObject_.[[MinimumFractionDigits]], _intlObject_.[[MaximumFractionDigits]]).
         1. Else,
-          1. Let _result_ be ToRawFixed(_x_, _intlObject_.[[MinimumIntegerDigits]], _intlObject_.[[MinimumFractionDigits]], _intlObject_.[[MaximumFractionDigits]]).
-        1. Return _result_.
+          1. Assert: _intlObject_.[[RoundingType]] is `"compactRounding"`.
+          1. Let _result_ be ToRawFixed(_x_, 0, 0).
+          1. If _result_.[[IntegerDigitsCount]] = 1, then
+            1. Let _result_ be ToRawPrecision(_x_, 1, 2).
+        1. Let _x_ be _result_.[[RoundedNumber]].
+        1. Let _string_ be _result_.[[FormattedString]].
+        1. Let _int_ be _result_.[[IntegerDigitsCount]].
+        1. Let _minInteger_ be _intlObject_.[[MinimumIntegerDigits]].
+        1. If _int_ < _minInteger_, then
+          1. Let _forwardZeros_ be the String consisting of _minInteger_–_int_ occurrences of the character `"0"`.
+          1. Let _string_ be the concatenation of Strings _forwardZeros_ and _string_.
+        1. If _isNegative_, then
+          1. Let _x_ be -_x_.
+        1. Return the Record { [[RoundedNumber]]: _x_, [[FormattedString]]: _string_ }.
       </emu-alg>
     </emu-clause>
 
@@ -143,11 +164,19 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
       </p>
 
       <emu-alg>
-        1. If _x_ is not *NaN* and _x_ < 0, then
-          1. Let _x_ be -_x_.
-          1. Let _pattern_ be _numberFormat_.[[NegativePattern]].
+        1. Let _exponent_ be 0.
+        1. If _x_ is *NaN*, then
+          1. Let _n_ be an implementation- and locale-dependent (ILD) String value indicating the *NaN* value.
+        1. Else if _x_ is not a finite Number,
+          1. Let _n_ be an ILD String value indicating infinity.
         1. Else,
-          1. Let _pattern_ be _numberFormat_.[[PositivePattern]].
+          1. If _numberFormat_.[[Style]] is `"percent"`, let _x_ be 100 × _x_.
+          1. Let _exponent_ be ComputeExponent(_numberFormat_, _x_).
+          1. Let _x_ be _x_ × 10<sup>-_exponent_</sup>.
+          1. Let _formatNumberResult_ be FormatNumberToString(_numberFormat_, _x_).
+          1. Let _n_ be _formatNumberResult_.[[FormattedString]].
+          1. Let _x_ be _formatNumberResult_.[[RoundedNumber]].
+        1. Let _pattern_ be GetNumberFormatPattern(_numberFormat_, _x_, _exponent_)
         1. Let _result_ be a new empty List.
         1. Let _beginIndex_ be Call(%StringProto_indexOf%, _pattern_, &laquo; `"{"`, 0 &raquo;).
         1. Let _endIndex_ be 0.
@@ -160,16 +189,12 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
             1. Let _literal_ be a substring of _pattern_ from position _nextIndex_, inclusive, to position _beginIndex_, exclusive.
             1. Append a new Record { [[Type]]: `"literal"`, [[Value]]: _literal_ } as the last element of _result_.
           1. Let _p_ be the substring of _pattern_ from position _beginIndex_, exclusive, to position _endIndex_, exclusive.
-          1. If _p_ is equal `"number"`, then
+          1. If _p_ is equal to `"number"`, then
             1. If _x_ is *NaN*, then
-              1. Let _n_ be an ILD String value indicating the *NaN* value.
               1. Append a new Record { [[Type]]: `"nan"`, [[Value]]: _n_ } as the last element of _result_.
             1. Else if _x_ is not a finite Number,
-              1. Let _n_ be an ILD String value indicating infinity.
               1. Append a new Record { [[Type]]: `"infinity"`, [[Value]]: _n_ } as the last element of _result_.
             1. Else,
-              1. If _numberFormat_.[[Style]] is `"percent"`, let _x_ be 100 × _x_.
-              1. Let _n_ be FormatNumberToString(_numberFormat_, _x_).
               1. If the _numberFormat_.[[NumberingSystem]] matches one of the values in the `"Numbering System"` column of <emu-xref href="#table-numbering-system-digits"></emu-xref> below, then
                 1. Let _digits_ be a List whose 10 String valued elements are the UTF-16 string representations of the 10 _digits_ specified in the `"Digits"` column of the matching row in <emu-xref href="#table-numbering-system-digits"></emu-xref>.
                 1. Replace each _digit_ in _n_ with the value of _digits_[_digit_].
@@ -182,7 +207,7 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
                 1. Let _integer_ be _n_.
                 1. Let _fraction_ be *undefined*.
               1. If the _numberFormat_.[[UseGrouping]] is *true*, then
-                1. Let _groupSepSymbol_ be the ILND String representing the grouping separator.
+                1. Let _groupSepSymbol_ be the implementation-, locale-, and numbering system-dependent (ILND) String representing the grouping separator.
                 1. Let _groups_ be a List whose elements are, in left to right order, the substrings defined by ILND set of locations within the _integer_.
                 1. Assert: The number of elements in _groups_ List is greater than 0.
                 1. Repeat, while _groups_ List is not empty
@@ -196,28 +221,62 @@ <h1>PartitionNumberPattern ( _numberFormat_, _x_ )</h1>
                 1. Let _decimalSepSymbol_ be the ILND String representing the decimal separator.
                 1. Append a new Record { [[Type]]: `"decimal"`, [[Value]]: _decimalSepSymbol_ } as the last element of _result_.
                 1. Append a new Record { [[Type]]: `"fraction"`, [[Value]]: _fraction_ } as the last element of _result_.
-          1. Else if _p_ is equal `"plusSign"`, then
+          1. Else if _p_ is equal to `"plusSign"`, then
             1. Let _plusSignSymbol_ be the ILND String representing the plus sign.
             1. Append a new Record { [[Type]]: `"plusSign"`, [[Value]]: _plusSignSymbol_ } as the last element of _result_.
-          1. Else if _p_ is equal `"minusSign"`, then
+          1. Else if _p_ is equal to `"minusSign"`, then
             1. Let _minusSignSymbol_ be the ILND String representing the minus sign.
             1. Append a new Record { [[Type]]: `"minusSign"`, [[Value]]: _minusSignSymbol_ } as the last element of _result_.
-          1. Else if _p_ is equal `"percentSign"` and _numberFormat_.[[Style]] is `"percent"`, then
+          1. Else if _p_ is equal to `"compactSymbol"`, then
+            1. Let _compactSymbol_ be an ILD string representing _exponent_ in short form, which may depend on _x_ in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a `"{compactSymbol}"` placeholder.
+            1. Append a new Record { [[Type]]: `"compact"`, [[Value]]: _compactSymbol_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"compactName"`, then
+            1. Let _compactName_ be an ILD string representing _exponent_ in long form, which may depend on _x_ in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a `"{compactName}"` placeholder.
+            1. Append a new Record { [[Type]]: `"compact"`, [[Value]]: _compactName_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"scientificSeparator"`, then
+            1. Let _scientificSeparator_ be the ILND String representing the exponent separator.
+            1. Append a new Record { [[Type]]: `"exponentSeparator"`, [[Value]]: _scientificSeparator_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"scientificExponent"`, then
+            1. If _exponent_ &lt; 0, then
+              1. Let _minusSignSymbol_ be the ILND String representing the minus sign.
+              1. Append a new Record { [[Type]]: `"exponentMinusSign"`, [[Value]]: _minusSignSymbol_ } as the last element of _result_.
+              1. Let _exponent_ be -_exponent_.
+            1. Let _exponentResult_ be ToRawFixed(_exponent_, 1, 0, 0).
+            1. Append a new Record { [[Type]]: `"exponentInteger"`, [[Value]]: _exponentResult_.[[FormattedString]] } as the last element of _result_.
+          1. Else if _p_ is equal to `"percentSign"`, then
             1. Let _percentSignSymbol_ be the ILND String representing the percent sign.
             1. Append a new Record { [[Type]]: `"percentSign"`, [[Value]]: _percentSignSymbol_ } as the last element of _result_.
-          1. Else if _p_ is equal `"currency"` and _numberFormat_.[[Style]] is `"currency"`, then
+          1. Else if _p_ is equal to `"unitSymbol"` and _numberFormat_.[[Style]] is `"unit"`, then
+            1. Let _unit_ be _numberFormat_.[[Unit]].
+            1. Let _mu_ be an ILD string representing _unit_ in short form, which may depend on _x_ in languages having different plural forms.
+            1. Append a new Record { [[Type]]: `"unit"`, [[Value]]: _mu_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"unitNarrowSymbol"` and _numberFormat_.[[Style]] is `"unit"`, then
+            1. Let _unit_ be _numberFormat_.[[Unit]].
+            1. Let _mu_ be an ILD string representing _unit_ in narrow form, which may depend on _x_ in languages having different plural forms.
+            1. Append a new Record { [[Type]]: `"unit"`, [[Value]]: _mu_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"unitName"` and _numberFormat_.[[Style]] is `"unit"`, then
+            1. Let _unit_ be _numberFormat_.[[Unit]].
+            1. Let _mu_ be an ILD string representing _unit_ in long form, which may depend on _x_ in languages having different plural forms.
+            1. Append a new Record { [[Type]]: `"unit"`, [[Value]]: _mu_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"currencyCode"` and _numberFormat_.[[Style]] is `"currency"`, then
             1. Let _currency_ be _numberFormat_.[[Currency]].
-            1. Assert: _numberFormat_.[[CurrencyDisplay]] is `"code"`, `"symbol"` or `"name"`.
-            1. If _numberFormat_.[[CurrencyDisplay]] is `"code"`, then
-              1. Let _cd_ be _currency_.
-            1. Else if _numberFormat_.[[CurrencyDisplay]] is `"symbol"`, then
-              1. Let _cd_ be an ILD string representing _currency_ in short form. If the implementation does not have such a representation of _currency_, use _currency_ itself.
-            1. Else if _numberFormat_.[[CurrencyDisplay]] is `"name"`, then
-              1. Let _cd_ be an ILD string representing _currency_ in long form. If the implementation does not have such a representation of _currency_, use _currency_ itself.
+            1. Let _cd_ be _currency_.
+            1. Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"currencySymbol"` and _numberFormat_.[[Style]] is `"currency"`, then
+            1. Let _currency_ be _numberFormat_.[[Currency]].
+            1. Let _cd_ be an ILD string representing _currency_ in short form. If the implementation does not have such a representation of _currency_, use _currency_ itself.
+            1. Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"currencyNarrowSymbol"` and _numberFormat_.[[Style]] is `"currency"`, then
+            1. Let _currency_ be _numberFormat_.[[Currency]].
+            1. Let _cd_ be an ILD string representing _currency_ in narrow form. If the implementation does not have such a representation of _currency_, use _currency_ itself.
+            1. Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.
+          1. Else if _p_ is equal to `"currencyName"` and _numberFormat_.[[Style]] is `"currency"`, then
+            1. Let _currency_ be _numberFormat_.[[Currency]].
+            1. Let _cd_ be an ILD string representing _currency_ in long form, which may depend on _x_ in languages having different plural forms. If the implementation does not have such a representation of _currency_, use _currency_ itself.
             1. Append a new Record { [[Type]]: `"currency"`, [[Value]]: _cd_ } as the last element of _result_.
           1. Else,
-            1. Let _literal_ be the substring of _pattern_ from position _beginIndex_, inclusive, to position _endIndex_, inclusive.
-            1. Append a new Record { [[Type]]: `"literal"`, [[Value]]: _literal_ } as the last element of _result_.
+            1. Let _unknown_ be an ILND String based on _x_ and _p_.
+            1. Append a new Record { [[Type]]: `"unknown"`, [[Value]]: _unknown_ } as the last element of _result_.
           1. Set _nextIndex_ to _endIndex_ + 1.
           1. Set _beginIndex_ to Call(%StringProto_indexOf%, _pattern_, &laquo; `"{"`, _nextIndex_ &raquo;).
         1. If _nextIndex_ is less than _length_, then
@@ -384,17 +443,22 @@ <h1>ToRawPrecision( _x_, _minPrecision_, _maxPrecision_ )</h1>
         1. If _x_ = 0, then
           1. Let _m_ be the String consisting of _p_ occurrences of the character `"0"`.
           1. Let _e_ be 0.
+          1. Let _xFinal_ be 0.
         1. Else,
-          1. Let _e_ and _n_ be integers such that 10<sup>_p_–1</sup> ≤ _n_ < 10<sup>_p_</sup> and for which the exact mathematical value of _n_ × 10<sup>_e_–_p_+1</sup> – _x_ is as close to zero as possible. If there are two such sets of _e_ and _n_, pick the _e_ and _n_ for which _n_ × 10<sup>_e_–_p_+1</sup> is larger.
+          1. Let _e_ be the base 10 logarithm of _x_ rounded down to the nearest integer.
+          1. Let _n_ be an integer such that 10<sup>_p_–1</sup> ≤ _n_ < 10<sup>_p_</sup> and for which the exact mathematical value of _n_ × 10<sup>_e_–_p_+1</sup> – _x_ is as close to zero as possible. If there is more than one such _n_, pick the one for which _n_ × 10<sup>_e_–_p_+1</sup> is larger.
           1. Let _m_ be the String consisting of the digits of the decimal representation of _n_ (in order, with no leading zeroes).
-        1. If _e_ ≥ _p_, then
-          1. Return the concatenation of _m_ and _e_-_p_+1 occurrences of the character `"0"`.
-        1. If _e_ = _p_-1, then
-          1. Return _m_.
-        1. If _e_ ≥ 0, then
+          1. Let _xFinal_ be _n_ × 10<sup>_e_–_p_+1</sup>.
+        1. If _e_ ≥ _p_–1, then
+          1. Let _m_ be the concatenation of _m_ and _e_–_p_+1 occurrences of the character `"0"`.
+          1. Let _int_ be _e_+1.
+        1. Else If _e_ ≥ 0, then
           1. Let _m_ be the concatenation of the first _e_+1 characters of _m_, the character `"."`, and the remaining _p_–(_e_+1) characters of _m_.
-        1. If _e_ < 0, then
+          1. Let _int_ be _e_+1.
+        1. Else,
+          1. Assert: _e_ < 0.
           1. Let _m_ be the concatenation of the String `"0."`, –(_e_+1) occurrences of the character `"0"`, and the string _m_.
+          1. Let _int_ be 1.
         1. If _m_ contains the character `"."`, and _maxPrecision_ > _minPrecision_, then
           1. Let _cut_ be _maxPrecision_ – _minPrecision_.
           1. Repeat, while _cut_ > 0 and the last character of _m_ is `"0"`
@@ -402,7 +466,7 @@ <h1>ToRawPrecision( _x_, _minPrecision_, _maxPrecision_ )</h1>
             1. Decrease _cut_ by 1.
           1. If the last character of _m_ is `"."`, then
             1. Remove the last character from _m_.
-        1. Return _m_.
+        1. Return the Record { [[FormattedString]]: _m_, [[RoundedNumber]]: _xFinal_, [[IntegerDigitsCount]]: _int_ }.
       </emu-alg>
     </emu-clause>
 
@@ -416,6 +480,7 @@ <h1>ToRawFixed( _x_, _minInteger_, _minFraction_, _maxFraction_ )</h1>
       <emu-alg>
         1. Let _f_ be _maxFraction_.
         1. Let _n_ be an integer for which the exact mathematical value of _n_ ÷ 10<sup>_f_</sup> – _x_ is as close to zero as possible. If there are two such _n_, pick the larger _n_.
+        1. Let _xFinal_ be _n_ ÷ 10<sup>_f_</sup>.
         1. If _n_ = 0, let _m_ be the String `"0"`. Otherwise, let _m_ be the String consisting of the digits of the decimal representation of _n_ (in order, with no leading zeroes).
         1. If _f_ ≠ 0, then
           1. Let _k_ be the number of characters in _m_.
@@ -433,10 +498,7 @@ <h1>ToRawFixed( _x_, _minInteger_, _minFraction_, _maxFraction_ )</h1>
           1. Decrease _cut_ by 1.
         1. If the last character of _m_ is `"."`, then
           1. Remove the last character from _m_.
-        1. If _int_ < _minInteger_, then
-          1. Let _z_ be the String consisting of _minInteger_–_int_ occurrences of the character `"0"`.
-          1. Let _m_ be the concatenation of Strings _z_ and _m_.
-        1. Return _m_.
+        1. Return the Record { [[FormattedString]]: _m_, [[RoundedNumber]]: _xFinal_, [[IntegerDigitsCount]]: _int_ }.
       </emu-alg>
     </emu-clause>
 
@@ -463,6 +525,140 @@ <h1>UnwrapNumberFormat( _nf_ )</h1>
       </emu-alg>
       <emu-note>See <emu-xref href="#legacy-constructor"></emu-xref> for the motivation of the normative optional text.</emu-note>
     </emu-clause>
+
+    <emu-clause id="sec-setnumberformatunitoptions" aoid="SetNumberFormatUnitOptions">
+      <h1>SetNumberFormatUnitOptions ( _intlObj_, _options_ )</h1>
+      <p>
+        The abstract operation SetNumberFormatUnitOptions resolves the user-specified options relating to units onto the intl object.
+      </p>
+      <emu-alg>
+        1. Assert: Type(_intlObj_) is Object.
+        1. Assert: Type(_options_) is Object.
+        1. Let _style_ be ? GetOption(_options_, `"style"`, `"string"`, &laquo; `"decimal"`, `"percent"`, `"currency"`, `"unit"` &raquo;, `"decimal"`).
+        1. Set _intlObj_.[[Style]] to _style_.
+        1. Let _currency_ be ? GetOption(_options_, `"currency"`, `"string"`, *undefined*, *undefined*).
+        1. Let _currencyDisplay_ be ? GetOption(_options_, `"currencyDisplay"`, `"string"`, &laquo; `"code"`, `"symbol"`, `"narrowSymbol"`, `"name"` &raquo;, `"symbol"`).
+        1. Let _currencySign_ be ? GetOption(_options_, `"currencySign"`, `"string"`, &laquo; `"standard"`, `"accounting"` &raquo;, `"standard"`).
+        1. Let _unit_ be ? GetOption(_options_, `"unit"`, `"string"`, *undefined*, *undefined*).
+        1. Let _unitDisplay_ be ? GetOption(_options_, `"unitDisplay"`, `"string"`, &laquo; `"short"`, `"narrow"`, `"long"` &raquo;, `"short"`).
+        1. If _style_ is `"currency"`, then
+          1. If _currency_ is *undefined*, throw a *TypeError* exception.
+          1. If the result of IsWellFormedCurrencyCode(_currency_) is *false*, throw a *RangeError* exception.
+          1. Let _currency_ be the result of converting _currency_ to upper case as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+          1. Set _intlObj_.[[Currency]] to _currency_.
+          1. Set _intlObj_.[[CurrencyDisplay]] to _currencyDisplay_.
+          1. Set _intlObj_.[[CurrencySign]] to _currencySign_.
+        1. If _style_ is `"unit"`, then
+          1. If _unit_ is *undefined*, throw a *TypeError* exception.
+          1. If the result of IsWellFormedUnitIdentifier(_unit_) is *false*, throw a *RangeError* exception.
+          1. Set _intlObj_.[[Unit]] to _unit_.
+          1. Set _intlObj_.[[UnitDisplay]] to _unitDisplay_.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-getnumberformatpattern" aoid="GetNumberFormatPattern">
+      <h1>GetNumberFormatPattern ( _numberFormat_, _x_, _exponent_ )</h1>
+      <p>
+        The abstract operation GetNumberFormatPattern considers the resolved unit-related options in the number format object along with the final scaled and rounded number being formatted and returns a pattern, a String value as described in <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>. 
+      </p>
+      <emu-alg>
+        1. Let _localeData_ be %NumberFormat%.[[LocaleData]].
+        1. Let _dataLocale_ be _numberFormat_.[[DataLocale]].
+        1. Let _dataLocaleData_ be _localeData_.[[&lt;_dataLocale_&gt;]].
+        1. Let _patterns_ be _dataLocaleData_.[[patterns]].
+        1. Assert: _patterns_ is a Record (see <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>).
+        1. Let _style_ be _numberFormat_.[[Style]].
+        1. If _style_ is `"percent"`, then
+          1. Let _patterns_ be _patterns_.[[`"percent"`]].
+        1. Else If _style_ is `"unit"`, then
+          1. Let _unit_ be _numberFormat_.[[Unit]].
+          1. Let _unitDisplay_ be _numberFormat_.[[UnitDisplay]].
+          1. Let _patterns_ be _patterns_.[[`"unit"`]].
+          1. If _patterns_.[[&lt;_unit_&gt;]] is *undefined*, then
+            1. Let _unit_ be `"fallback"`.
+          1. Let _patterns_ be _patterns_.[[&lt;_unit_&gt;]].
+          1. Let _patterns_ be _patterns_.[[&lt;_unitDisplay_&gt;]].
+        1. Else If _style_ is `"currency"`, then
+          1. Let _currency_ be _numberFormat_.[[Currency]].
+          1. Let _currencyDisplay_ be _numberFormat_.[[CurrencyDisplay]].
+          1. Let _currencySign_ be _numberFormat_.[[CurrencySign]].
+          1. Let _patterns_ be _patterns_.[[`"currency"`]].
+          1. If _patterns_.[[&lt;_currency_&gt;]] is *undefined*, then
+            1. Let _currency_ be `"fallback"`.
+          1. Let _patterns_ be _patterns_.[[&lt;_currency_&gt;]].
+          1. Let _patterns_ be _patterns_.[[&lt;_currencyDisplay_&gt;]].
+          1. Let _patterns_ be _patterns_.[[&lt;_currencySign_&gt;]].
+        1. Else,
+          1. Assert: _style_ is `"decimal"`.
+          1. Let _patterns_ be _patterns_.[[`"decimal"`]].
+        1. Let _signDisplay_ be _numberFormat_.[[SignDisplay]].
+        1. Let _patterns_ be _patterns_.[[&lt;_signDisplay_&gt;]].
+        1. Let _notation_ be _numberFormat_.[[Notation]].
+        1. Let _displayNotation_ be `"standard"`.
+        1. If _notation_ is `"scientific"` or _notation_ is `"engineering"`, then
+          1. Let _displayNotation_ be `"scientific"`.
+        1. Else If _exponent_ is not 0, then
+          1. Assert: _notation_ is `"compact"`.
+          1. Let _compactDisplay_ be _numberFormat_.[[CompactDisplay]].
+          1. If _compactDisplay_ is `"short"`, then
+            1. Let _displayNotation_ be `"compactShort"`.
+          1. Else,
+            1. Assert: _compactDisplay_ is `"long"`.
+            1. Let _displayNotation_ be `"compactLong"`.
+        1. Let _patterns_ be _patterns_.[[&lt;_displayNotation_&gt;]].
+        1. If _x_ is not *NaN* and _x_ &lt; 0 or _x_ is *-0*, then
+          1. Let _pattern_ be _patterns_.[[negativePattern]].
+        1. Else If _x_ is 0, then
+          1. Let _pattern_ be _patterns_.[[zeroPattern]].
+        1. Else,
+          1. Let _pattern_ be _patterns_.[[positivePattern]].
+        1. Return _pattern_.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-computeexponent" aoid="ComputeExponent">
+      <h1>ComputeExponent ( _numberFormat_, _x_ )</h1>
+      <p>
+        The abstract operation ComputeExponent computes an exponent (power of ten) by which to scale _x_ according to the number formatting settings.  It handles cases such as 999 rounding up to 1000, requiring a different exponent.
+      </p>
+      <emu-alg>
+        1. If _x_ = 0, then
+          1. Return 0.
+        1. If _x_ &lt; 0, then
+          1. Let _x_ = -_x_.
+        1. Let _magnitude_ be the base 10 logarithm of _x_ rounded down to the nearest integer.
+        1. Let _exponent_ be ComputeExponentForMagnitude(_numberFormat_, _magnitude_).
+        1. Let _x_ be _x_ × 10<sup>-_exponent_</sup>.
+        1. Let _formatNumberResult_ be FormatNumberToString(_numberFormat_, _x_).
+        1. If _formatNumberResult_.[[RoundedNumber]] = 0, then
+          1. Return _exponent_.
+        1. Let _newMagnitude_ be the base 10 logarithm of _x_ rounded down to the nearest integer.
+        1. If _newMagnitude_ is _magnitude_ – _exponent_, then
+          1. Return _exponent_.
+        1. Return ComputeExponentForMagnitude(_numberFormat_, _magnitude_ + 1).
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-computeexponentformagnitude" aoid="ComputeExponentForMagnitude">
+      <h1>ComputeExponentForMagnitude ( _numberFormat_, _magnitude_ )</h1>
+      <p>
+        The abstract operation ComputeExponentHelper computes an exponent by which to scale a number of the given magnitude (power of ten of the most significant digit) according to the locale and the desired notation (scientific, engineering, or compact).
+      </p>
+      <emu-alg>
+        1. Let _notation_ be _numberFormat_.[[Notation]].
+        1. If _notation_ is `"standard"`, then
+          1. Return 0.
+        1. Else If _notation_ is `"scientific"`, then
+          1. Return _magnitude_.
+        1. Else If _notation_ is `"engineering"`, then
+          1. Let _thousands_ be the greatest integer that is not greater than _magnitude_ ÷ 3.
+          1. Return _thousands_ × 3.
+        1. Else,
+          1. Assert: _notation_ is `"compact"`.
+          1. Let _exponent_ be an implementation-dependent integer by which to scale a number of the given magnitude in compact notation for the current locale.
+          1. Return _exponent_.
+      </emu-alg>
+    </emu-clause>
   </emu-clause>
 
   <emu-clause id="sec-intl-numberformat-constructor">
@@ -481,7 +677,7 @@ <h1>Intl.NumberFormat ( [ _locales_ [ , _options_ ] ] )</h1>
 
       <emu-alg>
         1. If NewTarget is *undefined*, let _newTarget_ be the active function object, else let _newTarget_ be NewTarget.
-        1. Let _numberFormat_ be ? OrdinaryCreateFromConstructor(_newTarget_, `"%NumberFormatPrototype%"`, &laquo; [[InitializedNumberFormat]], [[Locale]], [[NumberingSystem]], [[Style]], [[Currency]], [[CurrencyDisplay]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], [[MaximumFractionDigits]], [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[UseGrouping]], [[PositivePattern]], [[NegativePattern]], [[BoundFormat]] &raquo;).
+        1. Let _numberFormat_ be ? OrdinaryCreateFromConstructor(_newTarget_, `"%NumberFormatPrototype%"`, &laquo; [[InitializedNumberFormat]], [[Locale]], [[DataLocale]], [[NumberingSystem]], [[Style]], [[Unit]], [[UnitDisplay]], [[Currency]], [[CurrencyDisplay]], [[CurrencySign]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], [[MaximumFractionDigits]], [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[RoundingType]], [[Notation]], [[CompactDisplay]], [[UseGrouping]], [[SignDisplay]], [[BoundFormat]] &raquo;).
         1. Perform ? InitializeNumberFormat(_numberFormat_, _locales_, _options_).
       </emu-alg>
       <emu-normative-optional>
@@ -556,7 +752,10 @@ <h1>Internal slots</h1>
 
       <ul>
         <li>The list that is the value of the `"nu"` field of any locale field of [[LocaleData]] must not include the values `"native"`, `"traditio"`, or `"finance"`.</li>
-        <li>[[LocaleData]][locale] must have a patterns field for all locale values. The value of this field must be a record, which must have fields with the names of the three number format styles: `"decimal"`, `"percent"`, and `"currency"`. Each of these fields in turn must be a record with the fields positivePattern and negativePattern. The value of these fields must be string values that must contain the substring `"{number}"` and may contain the substrings `"{plusSign}"`, and `"{minusSign}"`; the values within the percent field must also contain the substring `"{percentSign}"`; the values within the currency field must also contain the substring `"{currency}"`. The pattern strings must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.</li>
+        <li>[[LocaleData]][locale] must have a patterns field for all locale values. The value of this field must be a Record, which must have fields with the names of the four number format styles: `"decimal"`, `"percent"`, `"currency"`, and `"unit"`.</li>
+        <li>The two fields `"currency"` and `"unit"` noted above must be Records with at least one field, `"fallback"`. The `"currency"` may have additional fields with keys corresponding to currency codes according to <emu-xref href="#sec-currency-codes"></emu-xref>.  Each field of `"currency"` must be a Record with fields corresponding to the possible currencyDisplay values: `"code"`, `"symbol"`, `"narrowSymbol"`, and `"name"`.  Each of those fields must contain a Record with fields corresponding to the possible currencySign values: `"standard"` or `"accounting"`. The `"unit"` field (of [[LocaleData]][locale]) may have additional fields beyond the required field `"fallback"` with keys corresponding to core measurement unit identifiers corresponding to <emu-xref href="#sec-measurement-unit-identifiers"></emu-xref>.  Each field of `"unit"` must be a Record with fields corresponding to the possible unitDisplay values: `"narrow"`, `"short"`, and `"long"`.</li>
+        <li>All of the leaf fields so far described for the patterns tree (`"decimal"`, `"percent"`, great-grandchildren of `"currency"`, and grandchildren of `"unit"`) must be Records with fields corresponding to the possible signDisplay values: `"auto"`, `"always"`, `"never"`, and `"exceptZero"`.  Each of these fields must be a Record with the keys `"standard"`, `"scientific"`, `"compactShort"`, and `"compactLong"`.  Each of these fields must be a Record with the keys `"positivePattern"`, `"zeroPattern"`, and `"negativePattern"`.</li>
+        <li>The value of the aforementioned fields (the sign-dependent pattern fields) must be string values that must contain the substring `"{number}"` and may contain the substrings `"{plusSign}"`, `"{minusSign}"`, `"{compactSymbol}"`, `"{compactName}"`, `"{scientificSeparator}"`, and `"{scientificExponent}"`; the values within the `"percent"` field must also contain the substring `"{percentSign}"`; the values within the `"currency"` field must also contain one of the following substrings: `"{currencyCode}"`, `"{currencySymbol}"`, `"{currencyNarrowSymbol}"`, or `"{currencyName}"`; and the values within the `"unit"` field must also contain one of the following substrings: `"{unitSymbol}"`, `"{unitNarrowSymbol}"`, or `"{unitName}"`. The pattern strings must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.</li>
       </ul>
 
       <emu-note>
@@ -608,6 +807,11 @@ <h1>get Intl.NumberFormat.prototype.format</h1>
           1. Set _nf_.[[BoundFormat]] to _F_.
         1. Return _nf_.[[BoundFormat]].
       </emu-alg>
+
+      <emu-note>
+        The returned function is bound to _nf_ so that it can be passed directly to `Array.prototype.map` or other functions.
+        This is considered a historical artefact, as part of a convention which is no longer followed for new features, but is preserved to maintain compatibility with existing programs.
+      </emu-note>
     </emu-clause>
 
     <emu-clause id="sec-intl.numberformat.prototype.formattoparts">
@@ -638,7 +842,7 @@ <h1>Intl.NumberFormat.prototype.resolvedOptions ()</h1>
         1. If Type(_nf_) is not Object, throw a *TypeError* exception.
         1. Let _nf_ be ? UnwrapNumberFormat(_nf_).
         1. Let _options_ be ! ObjectCreate(%ObjectPrototype%).
-        1. For each row of <emu-xref href="#table-numberformat-resolvedoptions-properties"></emu-xref>, except the header row, in any order, do
+        1. For each row of <emu-xref href="#table-numberformat-resolvedoptions-properties"></emu-xref>, except the header row, in table order, do
           1. Let _p_ be the Property value of the current row.
           1. Let _v_ be the value of _nf_'s internal slot whose name is the Internal Slot value of the current row.
           1. If _v_ is not *undefined*, then
@@ -675,6 +879,18 @@ <h1>Intl.NumberFormat.prototype.resolvedOptions ()</h1>
             <td>[[CurrencyDisplay]]</td>
             <td>`"currencyDisplay"`</td>
           </tr>
+          <tr>
+            <td>[[CurrencySign]]</td>
+            <td>`"currencySign"`</td>
+          </tr>
+          <tr>
+            <td>[[Unit]]</td>
+            <td>`"unit"`</td>
+          </tr>
+          <tr>
+            <td>[[UnitDisplay]]</td>
+            <td>`"unitDisplay"`</td>
+          </tr>
           <tr>
             <td>[[MinimumIntegerDigits]]</td>
             <td>`"minimumIntegerDigits"`</td>
@@ -699,6 +915,18 @@ <h1>Intl.NumberFormat.prototype.resolvedOptions ()</h1>
             <td>[[UseGrouping]]</td>
             <td>`"useGrouping"`</td>
           </tr>
+          <tr>
+            <td>[[Notation]]</td>
+            <td>`"notation"`</td>
+          </tr>
+          <tr>
+            <td>[[CompactDisplay]]</td>
+            <td>`"compactDisplay"`</td>
+          </tr>
+          <tr>
+            <td>[[SignDisplay]]</td>
+            <td>`"signDisplay"`</td>
+          </tr>
         </table>
       </emu-table>
     </emu-clause>
@@ -721,15 +949,22 @@ <h1>Properties of Intl.NumberFormat Instances</h1>
 
     <ul>
       <li>[[Locale]] is a String value with the language tag of the locale whose localization is used for formatting.</li>
+      <li>[[DataLocale]] is a String value with the language tag of the nearest locale for which the implementation has data to perform the formatting operation. It will be a parent locale of [[Locale]].</li>
       <li>[[NumberingSystem]] is a String value with the "type" given in Unicode Technical Standard 35 for the numbering system used for formatting.</li>
-      <li>[[Style]] is one of the String values `"decimal"`, `"currency"`, or `"percent"`, identifying the number format style used.</li>
-      <li>[[Currency]] is a String value with the currency code identifying the currency to be used if formatting with the `"currency"` style. It is only used when [[Style]] has the value `"currency"`.</li>
-      <li>[[CurrencyDisplay]] is one of the String values `"code"`, `"symbol"`, or `"name"`, specifying whether to display the currency as an ISO 4217 alphabetic currency code, a localized currency symbol, or a localized currency name if formatting with the `"currency"` style. It is only used when [[Style]] has the value `"currency"`.</li>
+      <li>[[Style]] is one of the String values `"decimal"`, `"currency"`, `"percent"`, or `"unit"`, identifying the type of quantity being measured.</li>
+      <li>[[Currency]] is a String value with the currency code identifying the currency to be used if formatting with the `"currency"` unit type. It is only used when [[Style]] has the value `"currency"`.</li>
+      <li>[[CurrencyDisplay]] is one of the String values `"code"`, `"symbol"`, `"narrowSymbol"`, or `"name"`, specifying whether to display the currency as an ISO 4217 alphabetic currency code, a localized currency symbol, or a localized currency name if formatting with the `"currency"` style. It is only used when [[Style]] has the value `"currency"`.</li>
+      <li>[[CurrencySign]] is one of the String values `"standard"` or `"accounting"`, specifying whether to render negative numbers in accounting format, often signified by parenthesis. It is only used when [[Style]] has the value `"currency"` and when [[SignDisplay]] is not `"never"`.</li>
+      <li>[[Unit]] is a core unit identifier, as defined by Unicode Technical Standard #35, Part 2, Section 6. It is only used when [[Style]] has the value `"unit"`.</li>
+      <li>[[UnitDisplay]] is one of the String values `"short"`, `"narrow"`, or `"long"`, specifying whether to display the unit as a symbol, narrow symbol, or localized long name if formatting with the `"unit"` style. It is only used when [[Style]] has the value `"unit"`.</li>
       <li>[[MinimumIntegerDigits]] is a non-negative integer Number value indicating the minimum integer digits to be used. Numbers will be padded with leading zeroes if necessary.</li>
-      <li>[[MinimumFractionDigits]] and [[MaximumFractionDigits]] are non-negative integer Number values indicating the minimum and maximum fraction digits to be used. Numbers will be rounded or padded with trailing zeroes if necessary.</li>
-      <li>[[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] are positive integer Number values indicating the minimum and maximum fraction digits to be shown. Either none or both of these properties are present; if they are, they override minimum and maximum integer and fraction digits – the formatter uses however many integer and fraction digits are required to display the specified number of significant digits.</li>
+      <li>[[MinimumFractionDigits]] and [[MaximumFractionDigits]] are non-negative integer Number values indicating the minimum and maximum fraction digits to be used. Numbers will be rounded or padded with trailing zeroes if necessary. These properties are only used when [[RoundingType]] is `"fractionDigits"`.</li>
+      <li>[[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] are positive integer Number values indicating the minimum and maximum fraction digits to be shown. If present, the formatter uses however many fraction digits are required to display the specified number of significant digits. These properties are only used when [[RoundingType]] is `"significantDigits"`.</li>
       <li>[[UseGrouping]] is a Boolean value indicating whether a grouping separator should be used.</li>
-      <li>[[PositivePattern]] and [[NegativePattern]] are String values as described in <emu-xref href="#sec-intl.numberformat-internal-slots"></emu-xref>.</li>
+      <li>[[RoundingType]] is one of the String values `"fractionDigits"`, `"significantDigits"`, or `"compactRounding"`, indicating which rounding strategy to use. If `"fractionDigits"`, the number is rounded according to [[MinimumFractionDigits]] and [[MaximumFractionDigits]], as described above. If `"significantDigits"`, the number is rounded according to [[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] as described above. If `"compactRounding"`, the number is rounded to 1 maximum fraction digit if there is 1 digit before the decimal separator, and otherwise round to 0 fraction digits.</li>
+      <li>[[Notation]]  is one of the String values `"standard"`, `"scientific"`, `"engineering"`, or `"compact"`, specifying whether the number should be displayed without scaling, scaled to the units place with the power of ten in scientific notation, scaled to the nearest thousand with the power of ten in scientific notation, or scaled to the nearest locale-dependent compact decimal notation power of ten with the corresponding compact decimal notation affix.</li>
+      <li>[[CompactDisplay]] is one of the String values `"short"` or `"long"`, specifying whether to display compact notation affixes in short form ("5K") or long form ("5 thousand") if formatting with the `"compact"` notation. It is only used when [[Notation]] has the value `"compact"`.</li>
+      <li>[[SignDisplay]] is one of the String values `"auto"`, `"always"`, `"never"`, or `"exceptZero"`, specifying whether to show the sign on negative numbers only, positive and negative numbers including zero, neither positive nor negative numbers, or positive and negative numbers but not zero.</li>
     </ul>
 
     <p>
diff --git a/section11/numberformat_proposed_out.html b/section11/numberformat_proposed_out.html
new file mode 100644
index 0000000..69b9280
--- /dev/null
+++ b/section11/numberformat_proposed_out.html
@@ -0,0 +1,2404 @@
+<!doctype html>
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location>","location":"","referencingIds":[],"key":"NumberFormat Objects"}]</script><script>"use strict";
+
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+  this.menu = menu;
+  this.$search = document.getElementById('menu-search');
+  this.$searchBox = document.getElementById('menu-search-box');
+  this.$searchResults = document.getElementById('menu-search-results');
+  
+  this.loadBiblio();
+  
+  document.addEventListener('keydown', this.documentKeydown.bind(this));
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+  this.$searchBox.addEventListener('keydown', debounce(this.searchBoxKeydown.bind(this), { stopPropagation: true }));
+  this.$searchBox.addEventListener('keyup', debounce(this.searchBoxKeyup.bind(this), { stopPropagation: true }));
+}
+
+Search.prototype.loadBiblio = function () {
+  var $biblio = document.getElementById('menu-search-biblio');
+  if (!$biblio) {
+    this.biblio = [];
+  } else {
+    this.biblio = JSON.parse($biblio.textContent);
+    this.biblio.clauses = this.biblio.filter(function (e) { return e.type === 'clause' });
+    this.biblio.byId = this.biblio.reduce(function (map, entry) {
+      map[entry.id] = entry;
+      return map;
+    }, {});
+  }
+}
+
+Search.prototype.documentKeydown = function (e) {
+  if (e.keyCode === 191) {
+    e.preventDefault();
+    e.stopPropagation();
+    this.triggerSearch();
+  }
+}
+
+Search.prototype.searchBoxKeydown = function (e) {
+  e.stopPropagation();
+  e.preventDefault();
+  if (e.keyCode === 191 && e.target.value.length === 0) {
+    e.preventDefault();
+  } else if (e.keyCode === 13) {
+    e.preventDefault();
+    this.selectResult();
+  }
+}
+
+Search.prototype.searchBoxKeyup = function (e) {
+  if (e.keyCode === 13 || e.keyCode === 9) {
+    return;
+  }
+  
+  this.search(e.target.value);
+}
+
+
+Search.prototype.triggerSearch = function (e) {
+  if (this.menu.isVisible()) {
+    this._closeAfterSearch = false;
+  } else {
+    this._closeAfterSearch = true;
+    this.menu.show();
+  }
+
+  this.$searchBox.focus();
+  this.$searchBox.select();
+}
+// bit 12 - Set if the result starts with searchString
+// bits 8-11: 8 - number of chunks multiplied by 2 if cases match, otherwise 1.
+// bits 1-7: 127 - length of the entry
+// General scheme: prefer case sensitive matches with fewer chunks, and otherwise
+// prefer shorter matches.
+function relevance(result, searchString) {
+  var relevance = 0;
+  
+  relevance = Math.max(0, 8 - result.match.chunks) << 7;
+  
+  if (result.match.caseMatch) {
+    relevance *= 2;
+  }
+  
+  if (result.match.prefix) {
+    relevance += 2048
+  }
+  
+  relevance += Math.max(0, 255 - result.entry.key.length);
+  
+  return relevance;
+}
+
+Search.prototype.search = function (searchString) {
+  var s = Date.now();
+
+  if (searchString === '') {
+    this.displayResults([]);
+    this.hideSearch();
+    return;
+  } else {
+    this.showSearch();
+  }
+  
+  if (searchString.length === 1) {
+    this.displayResults([]);
+    return;
+  }
+    
+  var results;
+
+  if (/^[\d\.]*$/.test(searchString)) {
+    results = this.biblio.clauses.filter(function (clause) {
+      return clause.number.substring(0, searchString.length) === searchString;
+    }).map(function (clause) {
+      return { entry: clause };
+    });
+  } else {
+    results = [];
+    
+    for (var i = 0; i < this.biblio.length; i++) {
+      var entry = this.biblio[i];
+      if (!entry.key) {
+        // biblio entries without a key aren't searchable
+        continue;
+      }
+
+      var match = fuzzysearch(searchString, entry.key);
+      if (match) {
+        results.push({ entry: entry, match: match });
+      }
+    }
+  
+    results.forEach(function (result) {
+      result.relevance = relevance(result, searchString);
+    });
+    
+    results = results.sort(function (a, b) { return b.relevance - a.relevance });
+
+  }
+
+  if (results.length > 50) {
+    results = results.slice(0, 50);
+  }
+  
+  this.displayResults(results);
+}
+Search.prototype.hideSearch = function () {
+  this.$search.classList.remove('active');
+}
+
+Search.prototype.showSearch = function () {
+  this.$search.classList.add('active');
+}
+
+Search.prototype.selectResult = function () {
+  var $first = this.$searchResults.querySelector('li:first-child a');
+
+  if ($first) {
+    document.location = $first.getAttribute('href');
+  }
+  
+  this.$searchBox.value = '';
+  this.$searchBox.blur();
+  this.displayResults([]);
+  this.hideSearch();
+
+  if (this._closeAfterSearch) {
+    this.menu.hide();
+  }
+}
+
+Search.prototype.displayResults = function (results) {
+  if (results.length > 0) {
+    this.$searchResults.classList.remove('no-results');
+    
+    var html = '<ul>';
+
+    results.forEach(function (result) {
+      var entry = result.entry;
+      var id = entry.id;
+      var cssClass = '';
+      var text = '';
+
+      if (entry.type === 'clause') {
+        var number = entry.number ? entry.number + ' ' : '';
+        text = number + entry.key;
+        cssClass = 'clause';
+        id = entry.id;
+      } else if (entry.type === 'production') {
+        text = entry.key;
+        cssClass = 'prod';
+        id = entry.id;  
+      } else if (entry.type === 'op') {
+        text = entry.key;
+        cssClass = 'op';
+        id = entry.id || entry.refId;
+      } else if (entry.type === 'term') {
+        text = entry.key;
+        cssClass = 'term';
+        id = entry.id || entry.refId;
+      }
+
+      if (text) {
+        html += '<li class=menu-search-result-' + cssClass + '><a href="#' + id + '">' + text + '</a></li>'
+      }
+    });
+
+    html += '</ul>'
+
+    this.$searchResults.innerHTML = html;
+  } else {
+    this.$searchResults.innerHTML = '';
+    this.$searchResults.classList.add('no-results');
+  }
+}
+
+
+function Menu() {
+  this.$toggle = document.getElementById('menu-toggle');
+  this.$menu = document.getElementById('menu');
+  this.$toc = document.querySelector('menu-toc > ol');
+  this.$pins = document.querySelector('#menu-pins');
+  this.$pinList = document.getElementById('menu-pins-list');
+  this.$toc = document.querySelector('#menu-toc > ol');
+  this.$specContainer = document.getElementById('spec-container');
+  this.search = new Search(this);
+  
+  this._pinnedIds = {}; 
+  this.loadPinEntries();
+
+  // toggle menu
+  this.$toggle.addEventListener('click', this.toggle.bind(this));
+
+  // keydown events for pinned clauses
+  document.addEventListener('keydown', this.documentKeydown.bind(this));
+
+  // toc expansion
+  var tocItems = this.$menu.querySelectorAll('#menu-toc li');
+  for (var i = 0; i < tocItems.length; i++) {
+    var $item = tocItems[i];
+    $item.addEventListener('click', function($item, event) {
+      $item.classList.toggle('active');
+      event.stopPropagation();
+    }.bind(null, $item));
+  }
+
+  // close toc on toc item selection
+  var tocLinks = this.$menu.querySelectorAll('#menu-toc li > a');
+  for (var i = 0; i < tocLinks.length; i++) {
+    var $link = tocLinks[i];
+    $link.addEventListener('click', function(event) {
+      this.toggle();
+      event.stopPropagation();
+    }.bind(this));
+  }
+
+  // update active clause on scroll
+  window.addEventListener('scroll', debounce(this.updateActiveClause.bind(this)));
+  this.updateActiveClause();
+
+  // prevent menu scrolling from scrolling the body
+  this.$toc.addEventListener('wheel', function (e) {
+    var target = e.currentTarget;
+    var offTop = e.deltaY < 0 && target.scrollTop === 0;
+    if (offTop) {
+      e.preventDefault();
+    }
+    var offBottom = e.deltaY > 0
+                    && target.offsetHeight + target.scrollTop >= target.scrollHeight;
+
+    if (offBottom) {
+		  e.preventDefault();
+	  }
+  })
+}
+
+Menu.prototype.documentKeydown = function (e) {
+  e.stopPropagation();
+  if (e.keyCode === 80) {
+    this.togglePinEntry();
+  } else if (e.keyCode > 48 && e.keyCode < 58) {
+    this.selectPin(e.keyCode - 49);
+  }
+}
+
+Menu.prototype.updateActiveClause = function () {
+  this.setActiveClause(findActiveClause(this.$specContainer))
+}
+
+Menu.prototype.setActiveClause = function (clause) {
+  this.$activeClause = clause;
+  this.revealInToc(this.$activeClause);
+}
+
+Menu.prototype.revealInToc = function (path) {
+  var current = this.$toc.querySelectorAll('li.revealed');
+  for (var i = 0; i < current.length; i++) {
+    current[i].classList.remove('revealed');
+    current[i].classList.remove('revealed-leaf');
+  }
+  
+  var current = this.$toc;
+  var index = 0;
+  while (index < path.length) {
+    var children = current.children;
+    for (var i = 0; i < children.length; i++) {
+      if ('#' + path[index].id === children[i].children[1].getAttribute('href') ) {
+        children[i].classList.add('revealed');
+        if (index === path.length - 1) {
+          children[i].classList.add('revealed-leaf');
+          var rect = children[i].getBoundingClientRect();
+          this.$toc.getBoundingClientRect().top
+          var tocRect = this.$toc.getBoundingClientRect();
+          if (rect.top + 10 > tocRect.bottom) {
+            this.$toc.scrollTop = this.$toc.scrollTop + (rect.top - tocRect.bottom) + (rect.bottom - rect.top);
+          } else if (rect.top < tocRect.top) {
+            this.$toc.scrollTop = this.$toc.scrollTop - (tocRect.top - rect.top);
+          }
+        }
+        current = children[i].querySelector('ol');
+        index++;
+        break;
+      }      
+    }
+    
+  }
+}
+
+function findActiveClause(root, path) {
+  var clauses = new ClauseWalker(root);
+  var $clause;
+  var found = false;
+  var path = path || [];
+  
+  while ($clause = clauses.nextNode()) {
+    var rect = $clause.getBoundingClientRect();
+    var $header = $clause.children[0];
+    var marginTop = parseInt(getComputedStyle($header)["margin-top"]);
+    
+    if ((rect.top - marginTop) <= 0 && rect.bottom > 0) {
+      found = true;
+      return findActiveClause($clause, path.concat($clause)) || path;
+    }
+  }
+  
+  return path;
+}
+
+function ClauseWalker(root) {
+  var previous;
+  var treeWalker = document.createTreeWalker(
+    root,
+    NodeFilter.SHOW_ELEMENT,
+    {
+      acceptNode: function (node) {
+        if (previous === node.parentNode) {
+          return NodeFilter.FILTER_REJECT;
+        } else {
+          previous = node;
+        }
+        if (node.nodeName === 'EMU-CLAUSE' || node.nodeName === 'EMU-INTRO' || node.nodeName === 'EMU-ANNEX') {
+          return NodeFilter.FILTER_ACCEPT;
+        } else {
+          return NodeFilter.FILTER_SKIP;
+        }
+      }
+    },
+    false
+    );
+  
+  return treeWalker;
+}
+
+Menu.prototype.toggle = function () {
+  this.$menu.classList.toggle('active');
+}
+
+Menu.prototype.show = function () {
+  this.$menu.classList.add('active');
+}
+
+Menu.prototype.hide = function () {
+  this.$menu.classList.remove('active');
+}
+
+Menu.prototype.isVisible = function() {
+  return this.$menu.classList.contains('active');
+}
+
+Menu.prototype.showPins = function () {
+  this.$pins.classList.add('active');
+}
+
+Menu.prototype.hidePins = function () {
+  this.$pins.classList.remove('active');
+}
+
+Menu.prototype.addPinEntry = function (id) {
+  var entry = this.search.biblio.byId[id];
+  if (!entry) {
+    // id was deleted after pin (or something) so remove it
+    delete this._pinnedIds[id];
+    this.persistPinEntries();
+    return;
+  }
+
+  if (entry.type === 'clause') {
+    var prefix;
+    if (entry.number) {
+      prefix = entry.number + ' ';
+    } else {
+      prefix = '';
+    }
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + prefix + entry.titleHTML + '</a></li>';
+  } else {
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + entry.key + '</a></li>';
+  }
+
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.showPins();
+  }
+  this._pinnedIds[id] = true;
+  this.persistPinEntries();
+}
+
+Menu.prototype.removePinEntry = function (id) {
+  var item = this.$pinList.querySelector('a[href="#' + id + '"]').parentNode;
+  this.$pinList.removeChild(item);
+  delete this._pinnedIds[id];
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.hidePins();
+  }
+
+  this.persistPinEntries();
+}
+
+Menu.prototype.persistPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+
+  localStorage.pinEntries = JSON.stringify(Object.keys(this._pinnedIds));
+}
+
+Menu.prototype.loadPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+  
+  var pinsString = window.localStorage.pinEntries;
+  if (!pinsString) return;
+  var pins = JSON.parse(pinsString);
+  for(var i = 0; i < pins.length; i++) {
+    this.addPinEntry(pins[i]);
+  }
+}
+
+Menu.prototype.togglePinEntry = function (id) {
+  if (!id) {
+    id = this.$activeClause[this.$activeClause.length - 1].id;
+  }
+
+  if (this._pinnedIds[id]) {
+    this.removePinEntry(id);
+  } else {
+    this.addPinEntry(id);
+  }
+}
+
+Menu.prototype.selectPin = function (num) {
+  document.location = this.$pinList.children[num].children[0].href;
+}
+
+var menu;
+function init() {
+  menu = new Menu();
+  var $container = document.getElementById('spec-container');
+  $container.addEventListener('mouseover', debounce(function (e) {
+    Toolbox.activateIfMouseOver(e);
+  }));
+}
+
+document.addEventListener('DOMContentLoaded', init);
+
+function debounce(fn, opts) {
+  opts = opts || {};
+  var timeout;
+  return function(e) {
+    if (opts.stopPropagation) {
+      e.stopPropagation();
+    }
+    var args = arguments;
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+    timeout = setTimeout(function() {
+      timeout = null;
+      fn.apply(this, args);
+    }.bind(this), 150);
+  }
+}
+
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+
+
+
+
+// The following license applies to the fuzzysearch function
+// The MIT License (MIT)
+// Copyright © 2015 Nicolas Bevacqua
+// Copyright © 2016 Brian Terlson
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+function fuzzysearch (searchString, haystack, caseInsensitive) {
+  var tlen = haystack.length;
+  var qlen = searchString.length;
+  var chunks = 1;
+  var finding = false;
+  var prefix = true;
+  
+  if (qlen > tlen) {
+    return false;
+  }
+  
+  if (qlen === tlen) {
+    if (searchString === haystack) {
+      return { caseMatch: true, chunks: 1, prefix: true };
+    } else if (searchString.toLowerCase() === haystack.toLowerCase()) {
+      return { caseMatch: false, chunks: 1, prefix: true };
+    } else {
+      return false;
+    }
+  }
+  
+  outer: for (var i = 0, j = 0; i < qlen; i++) {
+    var nch = searchString[i];
+    while (j < tlen) {
+      var targetChar = haystack[j++];
+      if (targetChar === nch) {
+        finding = true;
+        continue outer;
+      }
+      if (finding) {
+        chunks++;
+        finding = false;
+      }
+    }
+    
+    if (caseInsensitive) { return false }
+    
+    return fuzzysearch(searchString.toLowerCase(), haystack.toLowerCase(), true);
+  }
+  
+  return { caseMatch: !caseInsensitive, chunks: chunks, prefix: j <= qlen };
+}
+
+var Toolbox = {
+  init: function () {
+    this.$container = document.createElement('div');
+    this.$container.classList.add('toolbox');
+    this.$permalink = document.createElement('a');
+    this.$permalink.textContent = 'Permalink';
+    this.$pinLink = document.createElement('a');
+    this.$pinLink.textContent = 'Pin';
+    this.$pinLink.setAttribute('href', '#');
+    this.$pinLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      menu.togglePinEntry(this.entry.id);
+    }.bind(this));
+
+    this.$refsLink = document.createElement('a');
+    this.$refsLink.setAttribute('href', '#');
+    this.$refsLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      referencePane.showReferencesFor(this.entry);
+    }.bind(this));
+    this.$container.appendChild(this.$permalink);
+    this.$container.appendChild(this.$pinLink);
+    this.$container.appendChild(this.$refsLink);
+    document.body.appendChild(this.$container);
+  },
+
+  activate: function (el, entry, target) {
+    if (el === this._activeEl) return;
+    this.active = true;
+    this.entry = entry;
+    this.$container.classList.add('active');
+    this.top = el.offsetTop - this.$container.offsetHeight - 10;
+    this.left = el.offsetLeft;
+    this.$container.setAttribute('style', 'left: ' + this.left + 'px; top: ' + this.top + 'px');
+    this.updatePermalink();
+    this.updateReferences();
+    this._activeEl = el;
+    if (this.top < document.body.scrollTop && el === target) {
+      // don't scroll unless it's a small thing (< 200px)
+      this.$container.scrollIntoView();
+    }
+  },
+
+  updatePermalink: function () {
+    this.$permalink.setAttribute('href', '#' + this.entry.id);
+  },
+
+  updateReferences: function () {
+    this.$refsLink.textContent = 'References (' + this.entry.referencingIds.length + ')';
+  },
+
+  activateIfMouseOver: function (e) {
+    var ref = this.findReferenceUnder(e.target);
+    if (ref && (!this.active || e.pageY > this._activeEl.offsetTop)) {
+      var entry = menu.search.biblio.byId[ref.id];
+      this.activate(ref.element, entry, e.target);
+    } else if (this.active && ((e.pageY < this.top) || e.pageY > (this._activeEl.offsetTop + this._activeEl.offsetHeight))) {
+      this.deactivate();
+    }
+  },
+
+  findReferenceUnder: function (el) {
+    while (el) {
+      var parent = el.parentNode;
+      if (el.nodeName === 'H1' && parent.nodeName.match(/EMU-CLAUSE|EMU-ANNEX|EMU-INTRO/) && parent.id) {
+        return { element: el, id: parent.id };
+      } else if (el.nodeName.match(/EMU-(?!CLAUSE|XREF|ANNEX|INTRO)|DFN/) &&
+                el.id && el.id[0] !== '_') {
+        if (el.nodeName === 'EMU-FIGURE' || el.nodeName === 'EMU-TABLE' || el.nodeName === 'EMU-EXAMPLE') {
+          // return the figcaption element
+          return { element: el.children[0].children[0], id: el.id };
+        } else if (el.nodeName === 'EMU-PRODUCTION') {
+          // return the LHS non-terminal element
+          return { element: el.children[0], id: el.id };
+        } else {
+          return { element: el, id: el.id };
+        }
+      }
+      el = parent;
+    }
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+    this._activeEl = null;
+    this.activeElBounds = null;
+    this.active = false;
+  }
+}
+
+var referencePane = {
+  init: function() {
+    this.$container = document.createElement('div');
+    this.$container.setAttribute('id', 'references-pane-container');
+
+    var $spacer = document.createElement('div');
+    $spacer.setAttribute('id', 'references-pane-spacer');
+
+    this.$pane = document.createElement('div');
+    this.$pane.setAttribute('id', 'references-pane');
+
+    this.$container.appendChild($spacer);
+    this.$container.appendChild(this.$pane);
+
+    this.$header = document.createElement('div');
+    this.$header.classList.add('menu-pane-header');
+    this.$header.textContent = 'References to ';
+    this.$headerRefId = document.createElement('a');
+    this.$header.appendChild(this.$headerRefId);
+    this.$closeButton = document.createElement('span');
+    this.$closeButton.setAttribute('id', 'references-pane-close');
+    this.$closeButton.addEventListener('click', function (e) {
+      this.deactivate();
+    }.bind(this));
+    this.$header.appendChild(this.$closeButton);
+
+    this.$pane.appendChild(this.$header);
+    var tableContainer = document.createElement('div');
+    tableContainer.setAttribute('id', 'references-pane-table-container');
+
+    this.$table = document.createElement('table');
+    this.$table.setAttribute('id', 'references-pane-table');
+
+    this.$tableBody = this.$table.createTBody();
+
+    tableContainer.appendChild(this.$table);
+    this.$pane.appendChild(tableContainer);
+
+    menu.$specContainer.appendChild(this.$container);
+  },
+
+  activate: function () {
+    this.$container.classList.add('active');
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+  },
+
+  showReferencesFor(entry) {
+    this.activate();
+    var newBody = document.createElement('tbody');
+    var previousId;
+    var previousCell;
+    var dupCount = 0;
+    this.$headerRefId.textContent = '#' + entry.id;
+    this.$headerRefId.setAttribute('href', '#' + entry.id);
+    entry.referencingIds.map(function (id) {
+      var target = document.getElementById(id);
+      var cid = findParentClauseId(target);
+      var clause = menu.search.biblio.byId[cid];
+      var dupCount = 0;
+      return { id: id, clause: clause }
+    }).sort(function (a, b) {
+      return sortByClauseNumber(a.clause, b.clause);
+    }).forEach(function (record, i) {
+      if (previousId === record.clause.id) {
+        previousCell.innerHTML += ' (<a href="#' + record.id + '">' + (dupCount + 2) + '</a>)';
+        dupCount++;
+      } else {
+        var row = newBody.insertRow();
+        var cell = row.insertCell();
+        cell.innerHTML = record.clause.number;
+        cell = row.insertCell();
+        cell.innerHTML = '<a href="#' + record.id + '">' + record.clause.titleHTML + '</a>';
+        previousCell = cell;
+        previousId = record.clause.id;
+        dupCount = 0;
+      }
+    }, this);
+    this.$table.removeChild(this.$tableBody);
+    this.$tableBody = newBody;
+    this.$table.appendChild(this.$tableBody);
+  }
+}
+function findParentClauseId(node) {
+  while (node && node.nodeName !== 'EMU-CLAUSE' && node.nodeName !== 'EMU-INTRO' && node.nodeName !== 'EMU-ANNEX') {
+    node = node.parentNode;
+  }
+  if (!node) return null;
+  return node.getAttribute('id');
+}
+
+function sortByClauseNumber(c1, c2) {
+  var c1c = c1.number.split('.');
+  var c2c = c2.number.split('.');
+
+  for (var i = 0; i < c1c.length; i++) {
+    if (i >= c2c.length) {
+      return 1;
+    }
+    
+    var c1 = c1c[i];
+    var c2 = c2c[i];
+    var c1cn = Number(c1);
+    var c2cn = Number(c2);
+
+    if (Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      if (c1 > c2) {
+        return 1;
+      } else if (c1 < c2) {
+        return -1;
+      }
+    } else if (!Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      return -1;
+    } else if (Number.isNaN(c1cn) && !Number.isNaN(c2cn)) {
+      return 1;
+    } else if(c1cn > c2cn) {
+      return 1;
+    } else if (c1cn < c2cn) {
+      return -1;
+    }
+  }
+
+  if (c1c.length === c2c.length) {
+    return 0;
+  }
+  return -1;
+}
+
+document.addEventListener('DOMContentLoaded', function () {
+  Toolbox.init();
+  referencePane.init();
+})
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+</script><style>body {
+  display: flex;
+  font-size: 18px;
+  line-height: 1.5;
+  font-family: Cambria, Palatino Linotype, Palatino, Liberation Serif, serif;
+  padding: 0;
+  margin: 0;
+  color: #111;
+}
+
+#spec-container {
+  padding: 0 20px;
+  flex-grow: 1;
+  flex-basis: 66%;
+  box-sizing: border-box;
+  overflow: hidden;
+}
+
+body.oldtoc {
+  margin: 0 auto;
+}
+
+a {
+    text-decoration: none;
+    color: #206ca7;
+}
+
+a:visited {
+  color: #206ca7;
+}
+
+a:hover {
+    text-decoration: underline;
+    color: #239dee;
+}
+
+
+code {
+    font-weight: bold;
+    font-family: Consolas, Monaco, monospace;
+    white-space: pre;
+}
+
+pre code {
+  font-weight: inherit;
+}
+
+pre code.hljs {
+  background-color: #fff;
+  margin: 0;
+  padding: 0;
+}
+
+ol.toc {
+    list-style: none;
+    padding-left: 0;
+}
+
+ol.toc ol.toc {
+    padding-left: 2ex;
+    list-style: none;
+}
+
+var {
+  color: #2aa198;
+  transition: background-color 0.25s ease;
+  cursor: pointer;
+}
+
+var.referenced {
+  background-color: #ffff33;
+}
+
+emu-const {
+  font-family: sans-serif;
+}
+
+emu-val {
+  font-weight: bold;
+}
+emu-alg ol, emu-alg ol ol ol ol {
+    list-style-type: decimal;
+}
+
+emu-alg ol ol, emu-alg ol ol ol ol ol {
+    list-style-type: lower-alpha;
+}
+
+emu-alg ol ol ol, ol ol ol ol ol ol {
+    list-style-type: lower-roman;
+}
+
+emu-eqn {
+  display: block;
+  margin-left: 4em;
+}
+
+emu-eqn.inline {
+  display: inline;
+  margin: 0;
+}
+
+emu-eqn div:first-child {
+  margin-left: -2em;
+}
+
+emu-note {
+    margin: 1em 0;
+    color: #666;
+    border-left: 5px solid #ccc;
+    display: flex;
+    flex-direction: row;
+}
+
+emu-note > span.note {
+    flex-basis: 100px;
+    min-width: 100px;
+    flex-grow: 0;
+    flex-shrink: 1;
+    text-transform: uppercase;
+    padding-left: 5px;
+}
+
+emu-note[type=editor] {
+  border-left-color: #faa;
+}
+
+emu-note > div.note-contents {
+  flex-grow: 1;
+  flex-shrink: 1;
+}
+
+emu-note > div.note-contents > p:first-of-type {
+  margin-top: 0;
+}
+
+emu-note > div.note-contents > p:last-of-type {
+  margin-bottom: 0;
+}
+
+emu-figure {
+  display: block;
+}
+
+emu-example {
+  display: block;
+  margin: 1em 3em;
+}
+
+emu-example figure figcaption {
+  margin-top: 0.5em;
+  text-align: left;
+}
+
+emu-figure figure,
+emu-example figure,
+emu-table figure {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+emu-production {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 1em;
+    margin-left: 5ex;
+}
+
+emu-grammar.inline, emu-production.inline,
+emu-grammar.inline emu-production emu-rhs, emu-production.inline emu-rhs,
+emu-grammar[collapsed] emu-production emu-rhs, emu-production[collapsed] emu-rhs {
+    display: inline;
+    padding-left: 1ex;
+    margin-left: 0;
+}
+
+emu-grammar[collapsed] emu-production, emu-production[collapsed] {
+    margin: 0;
+}
+
+emu-constraints {
+    font-size: .75em;
+    margin-right: 1ex;
+}
+
+emu-gann {
+    margin-right: 1ex;
+}
+
+emu-gann emu-t:last-child,
+emu-gann emu-nt:last-child {
+    margin-right: 0;
+}
+
+emu-geq {
+    margin-left: 1ex;
+    font-weight: bold;
+}
+
+emu-oneof {
+    font-weight: bold;
+    margin-left: 1ex;
+}
+
+emu-nt {
+    display: inline-block;
+    font-style: italic;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-nt a, emu-nt a:visited {
+  color: #333;
+}
+
+emu-rhs emu-nt {
+    margin-right: 1ex;
+}
+
+emu-t {
+    display: inline-block;
+    font-family: monospace;
+    font-weight: bold;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-production emu-t {
+    margin-right: 1ex;
+}
+
+emu-rhs {
+    display: block;
+    padding-left: 75px;
+    text-indent: -25px;
+}
+
+emu-mods {
+    font-size: .85em;
+    vertical-align: sub;
+    font-style: normal;
+    font-weight: normal;
+}
+
+emu-production[collapsed] emu-mods {
+  display: none;
+}
+
+emu-params, emu-opt {
+  margin-right: 1ex;
+  font-family: monospace;
+}
+
+emu-params, emu-constraints {
+  color: #2aa198;
+}
+
+emu-opt {
+  color: #b58900;
+}
+
+emu-gprose {
+    font-size: 0.9em;
+    font-family: Helvetica, Arial, sans-serif;
+}
+
+h1.shortname {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.version {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.title {
+  margin-top: 0;
+  color: #f60;
+}
+
+h1.first {
+  margin-top: 0;
+}
+
+h1, h2, h3, h4, h5, h6 {
+    position: relative;
+}
+
+h1 .secnum {
+  text-decoration: none;
+  margin-right: 10px;
+}
+
+h1 span.title {
+  order: 2;
+}
+
+
+h1 { font-size: 2.67em; margin-top: 2em; margin-bottom: 0; line-height: 1em;}
+h2 { font-size: 2em; }
+h3 { font-size: 1.56em; }
+h4 { font-size: 1.25em; }
+h5 { font-size: 1.11em; }
+h6 { font-size: 1em; }
+
+h1:hover span.utils {
+  display: block;
+}
+
+span.utils {
+  font-size: 18px;
+  line-height: 18px;
+  display: none;
+  position: absolute;
+  top: 100%;
+  left: 0;
+  right: 0;
+  font-weight: normal;
+}
+
+span.utils:before {
+    content: "⤷";
+    display: inline-block;
+    padding: 0 5px;
+}
+
+span.utils > * {
+  display: inline-block;
+  margin-right: 20px;
+}
+
+h1 span.utils span.anchor a,
+h2 span.utils span.anchor a,
+h3 span.utils span.anchor a,
+h4 span.utils span.anchor a,
+h5 span.utils span.anchor a,
+h6 span.utils span.anchor a {
+  text-decoration: none;
+  font-variant: small-caps;
+}
+
+h1 span.utils span.anchor a:hover,
+h2 span.utils span.anchor a:hover,
+h3 span.utils span.anchor a:hover,
+h4 span.utils span.anchor a:hover,
+h5 span.utils span.anchor a:hover,
+h6 span.utils span.anchor a:hover {
+  color: #333;
+}
+
+emu-intro h1, emu-clause h1, emu-annex h1 { font-size: 2em; }
+emu-intro h2, emu-clause h2, emu-annex h2 { font-size: 1.56em; }
+emu-intro h3, emu-clause h3, emu-annex h3 { font-size: 1.25em; }
+emu-intro h4, emu-clause h4, emu-annex h4 { font-size: 1.11em; }
+emu-intro h5, emu-clause h5, emu-annex h5 { font-size: 1em; }
+emu-intro h6, emu-clause h6, emu-annex h6 { font-size: 0.9em; }
+emu-intro emu-intro h1, emu-clause emu-clause h1, emu-annex emu-annex h1 { font-size: 1.56em; }
+emu-intro emu-intro h2, emu-clause emu-clause h2, emu-annex emu-annex h2 { font-size: 1.25em; }
+emu-intro emu-intro h3, emu-clause emu-clause h3, emu-annex emu-annex h3 { font-size: 1.11em; }
+emu-intro emu-intro h4, emu-clause emu-clause h4, emu-annex emu-annex h4 { font-size: 1em; }
+emu-intro emu-intro h5, emu-clause emu-clause h5, emu-annex emu-annex h5 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex h1 { font-size: 1.25em; }
+emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex h2 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex h3 { font-size: 1em; }
+emu-intro emu-intro emu-intro h4, emu-clause emu-clause emu-clause h4, emu-annex emu-annex emu-annex h4 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex h2 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex emu-annex h3 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex emu-annex h2 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 0.9em }
+
+emu-clause, emu-intro, emu-annex {
+    display: block;
+}
+
+/* Figures and tables */
+figure { display: block; margin: 1em 0 3em 0; }
+figure object { display: block; margin: 0 auto; }
+figure table.real-table { margin: 0 auto; }
+figure figcaption {
+    display: block;
+    color: #555555;
+    font-weight: bold;
+    text-align: center;
+}
+
+emu-table table {
+  margin: 0 auto;
+}
+
+emu-table table, table.real-table {
+    border-collapse: collapse;
+}
+
+emu-table td, emu-table th, table.real-table td, table.real-table th {
+    border: 1px solid black;
+    padding: 0.4em;
+    vertical-align: baseline;
+}
+emu-table th, emu-table thead td, table.real-table th {
+    background-color: #eeeeee;
+}
+
+/* Note: the left content edges of table.lightweight-table >tbody >tr >td
+   and div.display line up. */
+table.lightweight-table {
+    border-collapse: collapse;
+    margin: 0 0 0 1.5em;
+}
+table.lightweight-table td, table.lightweight-table th {
+    border: none;
+    padding: 0 0.5em;
+    vertical-align: baseline;
+}
+
+/* diff styles */
+ins {
+    background-color: #e0f8e0;
+    text-decoration: none;
+    border-bottom: 1px solid #396;
+}
+
+del {
+    background-color: #fee;
+}
+
+ins.block, del.block,
+emu-production > ins, emu-production > del,
+emu-grammar > ins, emu-grammar > del {
+  display: block;
+}
+emu-rhs > ins, emu-rhs > del { 
+  display: inline;
+}
+
+tr.ins > td > ins {
+  border-bottom: none;
+}
+
+tr.ins > td {
+  background-color: #e0f8e0;
+}
+
+tr.del > td {
+  background-color: #fee;
+}
+
+/* Menu Styles */
+#menu-toggle {
+  font-size: 2em;
+
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 1.5em;
+  height: 1.5em;
+  z-index: 3;
+  visibility: hidden;
+  color: #1567a2;
+  background-color: #fff;
+
+  line-height: 1.5em;
+  text-align: center;
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu {
+  display: flex;
+  flex-direction: column;
+  width: 33%; height: 100vh;
+  max-width: 500px;
+  box-sizing: border-box;
+  background-color: #ddd;
+  overflow: hidden;
+  transition: opacity 0.1s linear;
+  padding: 0 5px;
+  position: fixed;
+  left: 0; top: 0;
+  border-right: 2px solid #bbb;
+
+  z-index: 2;
+}
+
+#menu-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+  flex-grow: 0;
+  flex-shrink: 0;
+}
+
+#menu a {
+  color: #1567a2;
+}
+
+#menu.active {
+  display: flex;
+  opacity: 1;
+  z-index: 2;
+}
+
+#menu-pins {
+  flex-grow: 1;
+  display: none;
+}
+
+#menu-pins.active {
+  display: block;
+}
+
+#menu-pins-list {
+  margin: 0;
+  padding: 0;
+  counter-reset: pins-counter;
+}
+
+#menu-pins-list > li:before {
+  content: counter(pins-counter);
+  counter-increment: pins-counter;
+  display: inline-block;
+  width: 25px;
+  text-align: center;
+  border: 1px solid #bbb;
+  padding: 2px;
+  margin: 4px;
+  box-sizing: border-box;
+  line-height: 1em;
+  background-color: #ccc;
+  border-radius: 4px;
+}
+#menu-toc > ol {
+  padding: 0;
+  flex-grow: 1;
+}
+
+#menu-toc > ol li {
+  padding: 0;
+}
+
+#menu-toc > ol , #menu-toc > ol ol {
+  list-style-type: none;
+  margin: 0;
+  padding: 0;
+}
+
+#menu-toc > ol ol {
+  padding-left: 0.75em;
+}
+
+#menu-toc li {
+  text-overflow: ellipsis;
+  overflow: hidden;
+  white-space: nowrap;
+}
+
+#menu-toc .item-toggle {
+  display: inline-block;
+  transform: rotate(-45deg) translate(-5px, -5px);
+  transition: transform 0.1s ease;
+  text-align: center;
+  width: 20px;
+
+  color: #aab;
+
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu-toc .item-toggle-none {
+  display: inline-block;
+  width: 20px;
+}
+
+#menu-toc li.active > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li > ol {
+  display: none;
+}
+
+#menu-toc li.active > ol {
+  display: block;
+}
+
+#menu-toc li.revealed > a {
+  background-color: #bbb;
+  font-weight: bold;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed-leaf> a {
+  color: #206ca7;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li.revealed > ol {
+  display: block;
+}
+
+#menu-toc li > a {
+  padding: 2px 5px;
+}
+
+#menu > * {
+  margin-bottom: 5px;
+}
+
+.menu-pane-header {
+  padding: 0 5px;
+  text-transform: uppercase;
+  background-color: #aaa;
+  color: #335;
+  font-weight: bold;
+  letter-spacing: 2px;
+  flex-grow: 0;
+  flex-shrink: 0;
+  font-size: 0.8em;
+}
+
+#menu-toc {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  overflow: hidden;
+  flex-grow: 1;
+}
+
+#menu-toc ol.toc {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#menu-search {
+  position: relative;
+  flex-grow: 0;
+  flex-shrink: 0;
+  width: 100%;
+  
+  display: flex;
+  flex-direction: column;
+  
+  max-height: 300px;
+}
+
+#menu-trace-list {
+  display: none;
+}
+
+#menu-search-box {
+  box-sizing: border-box;
+  display: block;
+  width: 100%;
+  margin: 5px 0 0 0;
+  font-size: 1em;
+  padding: 2px;
+  background-color: #bbb;
+  border: 1px solid #999;
+}
+
+#menu-search-results {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+li.menu-search-result-clause:before {
+    content: 'clause';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+li.menu-search-result-op:before {
+    content: 'op';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+
+li.menu-search-result-prod:before {
+    content: 'prod';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+
+li.menu-search-result-term:before {
+    content: 'term';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+#menu-search-results ul {
+  padding: 0 5px;
+  margin: 0;
+}
+
+#menu-search-results li {
+  white-space: nowrap;
+  text-overflow: ellipsis;
+}
+
+
+#menu-trace-list {
+  counter-reset: item;
+  margin: 0 0 0 20px;
+  padding: 0;
+}
+#menu-trace-list li {
+  display: block;
+  white-space: nowrap;
+}
+
+#menu-trace-list li .secnum:after {
+  content: " ";
+}
+#menu-trace-list li:before {
+    content: counter(item) " ";
+    background-color: #222;
+    counter-increment: item;
+    color: #999;
+    width: 20px;
+    height: 20px;
+    line-height: 20px;
+    display: inline-block;
+    text-align: center;
+    margin: 2px 4px 2px 0;
+}
+
+@media (max-width: 1000px) {
+  body {
+    margin: 0;
+    display: block;
+  }
+
+  #menu {
+    display: none;
+    padding-top: 3em;
+    width: 450px;
+  }
+
+  #menu.active {
+    position: fixed;
+    height: 100%;
+    left: 0;
+    top: 0;
+    right: 300px;
+  }
+
+  #menu-toggle {
+    visibility: visible;
+  }
+
+  #spec-container {
+    padding: 0 5px;
+  }
+
+  #references-pane-spacer {
+    display: none;
+  }
+}
+
+@media only screen and (max-width: 800px) {
+  #menu {
+    width: 100%;
+  }
+
+  h1 .secnum:empty {
+    margin: 0; padding: 0;
+  }
+}
+
+
+/* Toolbox */
+.toolbox {
+	position: absolute;
+	background: #ddd;
+	border: 1px solid #aaa;
+  display: none;
+  color: #eee;
+  padding: 5px;
+  border-radius: 3px;
+}
+
+.toolbox.active {
+  display: inline-block;
+}
+
+.toolbox a {
+  text-decoration: none;
+  padding: 0 5px;
+}
+
+.toolbox a:hover {
+  text-decoration: underline;
+}
+
+.toolbox:after, .toolbox:before {
+	top: 100%;
+	left: 15px;
+	border: solid transparent;
+	content: " ";
+	height: 0;
+	width: 0;
+	position: absolute;
+	pointer-events: none;
+}
+
+.toolbox:after {
+	border-color: rgba(0, 0, 0, 0);
+	border-top-color: #ddd;
+	border-width: 10px;
+	margin-left: -10px;
+}
+.toolbox:before {
+	border-color: rgba(204, 204, 204, 0);
+	border-top-color: #aaa;
+	border-width: 12px;
+	margin-left: -12px;
+}
+
+#references-pane-container {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: 250px;
+  display: none;
+  background-color: #ddd;
+  z-index: 1;
+}
+
+#references-pane-table-container {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#references-pane-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+}
+
+#references-pane {
+  flex-grow: 1;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+#references-pane-container.active {
+  display: flex;
+}
+
+#references-pane-close:after {
+  content: '✖';
+  float: right;
+  cursor: pointer;
+}
+
+#references-pane table tr td:first-child {
+  text-align: right;
+  padding-right: 5px;
+}
+
+@media print {
+  #menu-toggle {
+    display: none; 
+  }
+}
+</style></head><body><div id="menu-toggle">☰</div><div id="menu-spacer"></div><div id="menu"><div id="menu-search"><input type="text" id="menu-search-box" placeholder="Search..."><div id="menu-search-results" class="inactive"></div></div><div id="menu-pins"><div class="menu-pane-header">Pins</div><ul id="menu-pins-list"></ul></div><div class="menu-pane-header">Table of Contents</div><div id="menu-toc"><ol class="toc"><li><span class="item-toggle">◢</span><a href="#numberformat-objects" title="NumberFormat Objects"><span class="secnum">1</span> NumberFormat Objects</a><ol class="toc"><li><span class="item-toggle">◢</span><a href="#sec-numberformat-abstracts" title="Abstract Operations For NumberFormat Objects"><span class="secnum">1.1</span> Abstract Operations For NumberFormat Objects</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-setnfdigitoptions" title="SetNumberFormatDigitOptions ( intlObj, options, mnfdDefault, mxfdDefault )"><span class="secnum">1.1.1</span> SetNumberFormatDigitOptions ( <var>intlObj</var>, <var>options</var>, <var>mnfdDefault</var>, <var>mxfdDefault</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-initializenumberformat" title="InitializeNumberFormat ( numberFormat, locales, options )"><span class="secnum">1.1.2</span> InitializeNumberFormat ( <var>numberFormat</var>, <var>locales</var>, <var>options</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-currencydigits" title="CurrencyDigits ( currency )"><span class="secnum">1.1.3</span> CurrencyDigits ( <var>currency</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-number-format-functions" title="Number Format Functions"><span class="secnum">1.1.4</span> Number Format Functions</a></li><li><span class="item-toggle-none"></span><a href="#sec-formatnumberstring" title="FormatNumberToString ( intlObject, x )"><span class="secnum">1.1.5</span> FormatNumberToString ( <var>intlObject</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-partitionnumberpattern" title="PartitionNumberPattern ( numberFormat, x )"><span class="secnum">1.1.6</span> PartitionNumberPattern ( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-formatnumber" title="FormatNumber( numberFormat, x )"><span class="secnum">1.1.7</span> FormatNumber( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-formatnumbertoparts" title="FormatNumberToParts( numberFormat, x )"><span class="secnum">1.1.8</span> FormatNumberToParts( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-torawprecision" title="ToRawPrecision( x, minPrecision, maxPrecision )"><span class="secnum">1.1.9</span> ToRawPrecision( <var>x</var>, <var>minPrecision</var>, <var>maxPrecision</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-torawfixed" title="ToRawFixed( x, minInteger, minFraction, maxFraction )"><span class="secnum">1.1.10</span> ToRawFixed( <var>x</var>, <var>minInteger</var>, <var>minFraction</var>, <var>maxFraction</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-unwrapnumberformat" title="UnwrapNumberFormat( nf )"><span class="secnum">1.1.11</span> UnwrapNumberFormat( <var>nf</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-setnumberformatunitoptions" title="SetNumberFormatUnitOptions ( intlObj, options )"><span class="secnum">1.1.12</span> SetNumberFormatUnitOptions ( <var>intlObj</var>, <var>options</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-getnumberformatpattern" title="GetNumberFormatPattern ( numberFormat, x, exponent )"><span class="secnum">1.1.13</span> GetNumberFormatPattern ( <var>numberFormat</var>, <var>x</var>, <var>exponent</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-computeexponent" title="ComputeExponent ( numberFormat, x )"><span class="secnum">1.1.14</span> ComputeExponent ( <var>numberFormat</var>, <var>x</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-computeexponentformagnitude" title="ComputeExponentForMagnitude ( numberFormat, magnitude )"><span class="secnum">1.1.15</span> ComputeExponentForMagnitude ( <var>numberFormat</var>, <var>magnitude</var> )</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-intl-numberformat-constructor" title="The Intl.NumberFormat Constructor"><span class="secnum">1.2</span> The Intl.NumberFormat Constructor</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat" title="Intl.NumberFormat ( [ locales [ , options ] ] )"><span class="secnum">1.2.1</span> Intl.NumberFormat ( [ <var>locales</var> [ , <var>options</var> ] ] )</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-properties-of-intl-numberformat-constructor" title="Properties of the Intl.NumberFormat Constructor"><span class="secnum">1.3</span> Properties of the Intl.NumberFormat Constructor</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype" title="Intl.NumberFormat.prototype"><span class="secnum">1.3.1</span> Intl.NumberFormat.prototype</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.supportedlocalesof" title="Intl.NumberFormat.supportedLocalesOf ( locales [ , options ] )"><span class="secnum">1.3.2</span> Intl.NumberFormat.supportedLocalesOf ( <var>locales</var> [ , <var>options</var> ] )</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat-internal-slots" title="Internal slots"><span class="secnum">1.3.3</span> Internal slots</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-properties-of-intl-numberformat-prototype-object" title="Properties of the Intl.NumberFormat Prototype Object"><span class="secnum">1.4</span> Properties of the Intl.NumberFormat Prototype Object</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.constructor" title="Intl.NumberFormat.prototype.constructor"><span class="secnum">1.4.1</span> Intl.NumberFormat.prototype.constructor</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype-@@tostringtag" title="Intl.NumberFormat.prototype [ @@toStringTag ]"><span class="secnum">1.4.2</span> Intl.NumberFormat.prototype [ @@toStringTag ]</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.format" title="get Intl.NumberFormat.prototype.format"><span class="secnum">1.4.3</span> get Intl.NumberFormat.prototype.format</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.formattoparts" title="Intl.NumberFormat.prototype.formatToParts ( value )"><span class="secnum">1.4.4</span> Intl.NumberFormat.prototype.formatToParts ( <var>value</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-intl.numberformat.prototype.resolvedoptions" title="Intl.NumberFormat.prototype.resolvedOptions ()"><span class="secnum">1.4.5</span> Intl.NumberFormat.prototype.resolvedOptions ()</a></li></ol></li><li><span class="item-toggle-none"></span><a href="#sec-properties-of-intl-numberformat-instances" title="Properties of Intl.NumberFormat Instances"><span class="secnum">1.5</span> Properties of Intl.NumberFormat Instances</a></li></ol></li></ol></div></div><div id="spec-container"><emu-clause id="numberformat-objects">
+  <h1 class="first"><span class="secnum">1</span>NumberFormat Objects</h1>
+
+  <emu-clause id="sec-numberformat-abstracts">
+    <h1><span class="secnum">1.1</span>Abstract Operations For NumberFormat Objects</h1>
+
+    <emu-clause id="sec-setnfdigitoptions" aoid="SetNumberFormatDigitOptions">
+      <h1><span class="secnum">1.1.1</span>SetNumberFormatDigitOptions ( <var>intlObj</var>, <var>options</var>, <var>mnfdDefault</var>, <var>mxfdDefault</var> )</h1>
+
+      <p>
+        The abstract operation SetNumberFormatDigitOptions applies digit
+        options used for number formatting onto the intl object.
+      
+      </p>
+      <emu-alg><ol><li>Assert: <emu-xref aoid="Type" id="_ref_7"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>intlObj</var>) is Object.</li><li>Assert: <emu-xref aoid="Type" id="_ref_8"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>options</var>) is Object.</li><li>Assert: <emu-xref aoid="Type" id="_ref_9"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>mnfdDefault</var>) is Number.</li><li>Assert: <emu-xref aoid="Type" id="_ref_10"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>mxfdDefault</var>) is Number.</li><li>Let <var>mnid</var> be ?&nbsp;GetNumberOption(<var>options</var>, <code>"minimumIntegerDigits,"</code>, 1, 21, 1).</li><li>Let <var>mnfd</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_11"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>options</var>, <code>"minimumFractionDigits"</code>).</li><li>Let <var>mxfd</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_12"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>options</var>, <code>"maximumFractionDigits"</code>).</li><li>Let <var>mnsd</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_13"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>options</var>, <code>"minimumSignificantDigits"</code>).</li><li>Let <var>mxsd</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_14"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>options</var>, <code>"maximumSignificantDigits"</code>).</li><li>Set <var>intlObj</var>.[[MinimumIntegerDigits]] to <var>mnid</var>.</li><li>If <var>mnsd</var> is not <emu-val>undefined</emu-val> or <var>mxsd</var> is not <emu-val>undefined</emu-val>, then<ol><li>Set <var>intlObj</var>.[[RoundingType]] to <code>"significantDigits"</code>.</li><li>Let <var>mnsd</var> be ?&nbsp;DefaultNumberOption(<var>mnsd</var>, 1, 21, 1).</li><li>Let <var>mxsd</var> be ?&nbsp;DefaultNumberOption(<var>mxsd</var>, <var>mnsd</var>, 21, 21).</li><li>Set <var>intlObj</var>.[[MinimumSignificantDigits]] to <var>mnsd</var>.</li><li>Set <var>intlObj</var>.[[MaximumSignificantDigits]] to <var>mxsd</var>.</li></ol></li><li>Else If <var>mnfd</var> is not <emu-val>undefined</emu-val> or <var>mxfd</var> is not <emu-val>undefined</emu-val>, then<ol><li>Set <var>intlObj</var>.[[RoundingType]] to <code>"fractionDigits"</code>.</li><li>Let <var>mnfd</var> be ?&nbsp;DefaultNumberOption(<var>mnfd</var>, 0, 20, <var>mnfdDefault</var>).</li><li>Let <var>mxfdActualDefault</var> be <emu-xref aoid="max"><a href="https://tc39.github.io/ecma262/#sec-algorithm-conventions">max</a></emu-xref>( <var>mnfd</var>, <var>mxfdDefault</var> ).</li><li>Let <var>mxfd</var> be ?&nbsp;DefaultNumberOption(<var>mxfd</var>, <var>mnfd</var>, 20, <var>mxfdActualDefault</var>).</li><li>Set <var>intlObj</var>.[[MinimumFractionDigits]] to <var>mnfd</var>.</li><li>Set <var>intlObj</var>.[[MaximumFractionDigits]] to <var>mxfd</var>.</li></ol></li><li>Else If <var>intlObj</var>.[[Notation]] is <code>"compact"</code>, then<ol><li>Set <var>intlObj</var>.[[RoundingType]] to <code>"compactRounding"</code>.</li></ol></li><li>Else,<ol><li>Set <var>intlObj</var>.[[RoundingType]] to <code>"fractionDigits"</code>.</li><li>Set <var>intlObj</var>.[[MinimumFractionDigits]] to <var>mnfdDefault</var>.</li><li>Set <var>intlObj</var>.[[MaximumFractionDigits]] to <var>mxfdDefault</var>.
+      </li></ol></li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-initializenumberformat" aoid="InitializeNumberFormat">
+      <h1><span class="secnum">1.1.2</span>InitializeNumberFormat ( <var>numberFormat</var>, <var>locales</var>, <var>options</var> )</h1>
+
+      <p>
+        The abstract operation InitializeNumberFormat accepts the arguments <var>numberFormat</var> (which must be an object), <var>locales</var>, and <var>options</var>. It initializes <var>numberFormat</var> as a NumberFormat object. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>requestedLocales</var> be ?&nbsp;CanonicalizeLocaleList(<var>locales</var>).</li><li>If <var>options</var> is <emu-val>undefined</emu-val>, then<ol><li>Let <var>options</var> be <emu-xref aoid="ObjectCreate" id="_ref_15"><a href="https://tc39.github.io/ecma262/#sec-objectcreate">ObjectCreate</a></emu-xref>(<emu-val>null</emu-val>).</li></ol></li><li>Else,<ol><li>Let <var>options</var> be ?&nbsp;<emu-xref aoid="ToObject" id="_ref_16"><a href="https://tc39.github.io/ecma262/#sec-toobject">ToObject</a></emu-xref>(<var>options</var>).</li></ol></li><li>Let <var>opt</var> be a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref>.</li><li>Let <var>matcher</var> be ?&nbsp;GetOption(<var>options</var>, <code>"localeMatcher"</code>, <code>"string"</code>, « <code>"lookup"</code>, <code>"best fit"</code> », <code>"best fit"</code>).</li><li>Set <var>opt</var>.[[localeMatcher]] to <var>matcher</var>.</li><li>Let <var>localeData</var> be <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_17"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[LocaleData]].</li><li>Let <var>r</var> be ResolveLocale(<emu-xref href="#sec-intl-numberformat-constructor" id="_ref_18"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[AvailableLocales]], <var>requestedLocales</var>, <var>opt</var>, <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_19"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[RelevantExtensionKeys]], <var>localeData</var>).</li><li>Set <var>numberFormat</var>.[[Locale]] to <var>r</var>.[[locale]].</li><li>Set <var>numberFormat</var>.[[DataLocale]] to <var>r</var>.[[dataLocale]].</li><li>Set <var>numberFormat</var>.[[NumberingSystem]] to <var>r</var>.[[nu]].</li><li>Perform ?&nbsp;<emu-xref aoid="SetNumberFormatUnitOptions" id="_ref_20"><a href="#sec-setnumberformatunitoptions">SetNumberFormatUnitOptions</a></emu-xref>(<var>numberFormat</var>, <var>options</var>).</li><li>Let <var>style</var> be <var>numberFormat</var>.[[Style]].</li><li>If <var>style</var> is <code>"currency"</code>, then<ol><li>Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</li><li>Let <var>cDigits</var> be <emu-xref aoid="CurrencyDigits" id="_ref_21"><a href="#sec-currencydigits">CurrencyDigits</a></emu-xref>(<var>currency</var>).</li><li>Let <var>mnfdDefault</var> be <var>cDigits</var>.</li><li>Let <var>mxfdDefault</var> be <var>cDigits</var>.</li></ol></li><li>Else,<ol><li>Let <var>mnfdDefault</var> be 0.</li><li>If <var>style</var> is <code>"percent"</code>, then<ol><li>Let <var>mxfdDefault</var> be 0.</li></ol></li><li>Else,<ol><li>Let <var>mxfdDefault</var> be 3.</li></ol></li></ol></li><li>Let <var>notation</var> be ?&nbsp;GetOption(<var>options</var>, <code>"notation"</code>, <code>"string"</code>, « <code>"standard"</code>, <code>"scientific"</code>, <code>"engineering"</code>, <code>"compact"</code> », <code>"standard"</code>).</li><li>Set <var>numberFormat</var>.[[Notation]] to <var>notation</var>.</li><li>Perform ?&nbsp;<emu-xref aoid="SetNumberFormatDigitOptions" id="_ref_22"><a href="#sec-setnfdigitoptions">SetNumberFormatDigitOptions</a></emu-xref>(<var>numberFormat</var>, <var>options</var>, <var>mnfdDefault</var>, <var>mxfdDefault</var>).</li><li>Let <var>compactDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"compactDisplay"</code>, <code>"string"</code>, « <code>"short"</code>, <code>"long"</code> », <code>"short"</code>).</li><li>If <var>notation</var> is <code>"compact"</code>, then<ol><li>Set <var>numberFormat</var>.[[CompactDisplay]] to <var>compactDisplay</var>.</li></ol></li><li>Let <var>useGrouping</var> be ?&nbsp;GetOption(<var>options</var>, <code>"useGrouping"</code>, <code>"boolean"</code>, <emu-val>undefined</emu-val>, <emu-val>true</emu-val>).</li><li>Set <var>numberFormat</var>.[[UseGrouping]] to <var>useGrouping</var>.</li><li>Let <var>signDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"signDisplay"</code>, <code>"string"</code>, « <code>"auto"</code>, <code>"never"</code>, <code>"always"</code>, <code>"exceptZero"</code> », <code>"auto"</code>).</li><li>Set <var>numberFormat</var>.[[SignDisplay]] to <var>signDisplay</var>.</li><li>Return <var>numberFormat</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-currencydigits" aoid="CurrencyDigits">
+      <h1><span class="secnum">1.1.3</span>CurrencyDigits ( <var>currency</var> )</h1>
+
+      <p>
+        When the abstract operation CurrencyDigits is called with an argument <var>currency</var> (which must be an upper case String value), the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If the ISO 4217 currency and funds code list contains <var>currency</var> as an alphabetic code, return the minor unit value corresponding to the <var>currency</var> from the list; otherwise, return 2.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-number-format-functions">
+      <h1><span class="secnum">1.1.4</span>Number Format Functions</h1>
+
+      <p>A Number format function is an anonymous built-in function that has a [[NumberFormat]] internal slot.</p>
+      <p>When a Number format function <var>F</var> is called with optional argument <var>value</var>, the following steps are taken:</p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be <var>F</var>.[[NumberFormat]].</li><li>Assert: <emu-xref aoid="Type" id="_ref_23"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is Object and <var>nf</var> has an [[InitializedNumberFormat]] internal slot.</li><li>If <var>value</var> is not provided, let <var>value</var> be <emu-val>undefined</emu-val>.</li><li>Let <var>x</var> be ?&nbsp;<emu-xref aoid="ToNumber" id="_ref_24"><a href="https://tc39.github.io/ecma262/#sec-tonumber">ToNumber</a></emu-xref>(<var>value</var>).</li><li>Return <emu-xref aoid="FormatNumber" id="_ref_25"><a href="#sec-formatnumber">FormatNumber</a></emu-xref>(<var>nf</var>, <var>x</var>).
+      </li></ol></emu-alg>
+
+      <p>
+        The <code>length</code> property of a Number format function is 1.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumberstring" aoid="FormatNumberToString">
+      <h1><span class="secnum">1.1.5</span>FormatNumberToString ( <var>intlObject</var>, <var>x</var> )</h1>
+
+      <p>
+        The FormatNumberToString abstract operation is called with arguments <var>intlObject</var> (which must be an object with [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], and [[MaximumFractionDigits]] internal slots), and <var>x</var> (which must be a Number value), and returns a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> containing two values: <var>x</var> as a string value with digits formatted according to the five formatting parameters in the field [[FormattedString]], and the final floating decimal value of <var>x</var> after rounding has been performed in the field [[RoundedNumber]].
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>isNegative</var> be <var>x</var> &lt; 0 or <var>x</var> is <emu-val>-0</emu-val>.</li><li>If <var>isNegative</var>, then<ol><li>Let <var>x</var> be -<var>x</var>.</li></ol></li><li>If <var>intlObject</var>.[[RoundingType]] is <code>"significantDigits"</code>, then<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawPrecision" id="_ref_26"><a href="#sec-torawprecision">ToRawPrecision</a></emu-xref>(<var>x</var>, <var>intlObject</var>.[[MinimumSignificantDigits]], <var>intlObject</var>.[[MaximumSignificantDigits]]).</li></ol></li><li>Else If <var>intlObject</var>.[[RoundingType]] is <code>"fractionDigits"</code>, then,<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawFixed" id="_ref_27"><a href="#sec-torawfixed">ToRawFixed</a></emu-xref>(<var>x</var>, <var>intlObject</var>.[[MinimumFractionDigits]], <var>intlObject</var>.[[MaximumFractionDigits]]).</li></ol></li><li>Else,<ol><li>Assert: <var>intlObject</var>.[[RoundingType]] is <code>"compactRounding"</code>.</li><li>Let <var>result</var> be <emu-xref aoid="ToRawFixed" id="_ref_28"><a href="#sec-torawfixed">ToRawFixed</a></emu-xref>(<var>x</var>, 0, 0).</li><li>If <var>result</var>.[[IntegerDigitsCount]] = 1, then<ol><li>Let <var>result</var> be <emu-xref aoid="ToRawPrecision" id="_ref_29"><a href="#sec-torawprecision">ToRawPrecision</a></emu-xref>(<var>x</var>, 1, 2).</li></ol></li></ol></li><li>Let <var>x</var> be <var>result</var>.[[RoundedNumber]].</li><li>Let <var>string</var> be <var>result</var>.[[FormattedString]].</li><li>Let <var>int</var> be <var>result</var>.[[IntegerDigitsCount]].</li><li>Let <var>minInteger</var> be <var>intlObject</var>.[[MinimumIntegerDigits]].</li><li>If <var>int</var> &lt; <var>minInteger</var>, then<ol><li>Let <var>forwardZeros</var> be the String consisting of <var>minInteger</var>–<var>int</var> occurrences of the character <code>"0"</code>.</li><li>Let <var>string</var> be the concatenation of Strings <var>forwardZeros</var> and <var>string</var>.</li></ol></li><li>If <var>isNegative</var>, then<ol><li>Let <var>x</var> be -<var>x</var>.</li></ol></li><li>Return the <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[RoundedNumber]]: <var>x</var>, [[FormattedString]]: <var>string</var> }.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-partitionnumberpattern" aoid="PartitionNumberPattern">
+      <h1><span class="secnum">1.1.6</span>PartitionNumberPattern ( <var>numberFormat</var>, <var>x</var> )</h1>
+
+      <p>
+        The PartitionNumberPattern abstract operation is called with arguments <var>numberFormat</var> (which must be an object initialized as a NumberFormat) and <var>x</var> (which must be a Number value), interprets <var>x</var> as a numeric value, and creates the corresponding parts according to the effective locale and the formatting options of <var>numberFormat</var>. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>exponent</var> be 0.</li><li>If <var>x</var> is <emu-val>NaN</emu-val>, then<ol><li>Let <var>n</var> be an implementation- and locale-dependent (ILD) String value indicating the <emu-val>NaN</emu-val> value.</li></ol></li><li>Else if <var>x</var> is not a finite Number,<ol><li>Let <var>n</var> be an ILD String value indicating infinity.</li></ol></li><li>Else,<ol><li>If <var>numberFormat</var>.[[Style]] is <code>"percent"</code>, let <var>x</var> be 100 × <var>x</var>.</li><li>Let <var>exponent</var> be <emu-xref aoid="ComputeExponent" id="_ref_30"><a href="#sec-computeexponent">ComputeExponent</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>Let <var>x</var> be <var>x</var> × 10<sup>-<var>exponent</var></sup>.</li><li>Let <var>formatNumberResult</var> be <emu-xref aoid="FormatNumberToString" id="_ref_31"><a href="#sec-formatnumberstring">FormatNumberToString</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>Let <var>n</var> be <var>formatNumberResult</var>.[[FormattedString]].</li><li>Let <var>x</var> be <var>formatNumberResult</var>.[[RoundedNumber]].</li></ol></li><li>Let <var>pattern</var> be <emu-xref aoid="GetNumberFormatPattern" id="_ref_32"><a href="#sec-getnumberformatpattern">GetNumberFormatPattern</a></emu-xref>(<var>numberFormat</var>, <var>x</var>, <var>exponent</var>)</li><li>Let <var>result</var> be a new empty <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref>.</li><li>Let <var>beginIndex</var> be <emu-xref aoid="Call" id="_ref_33"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>pattern</var>, « <code>"{"</code>, 0 »).</li><li>Let <var>endIndex</var> be 0.</li><li>Let <var>nextIndex</var> be 0.</li><li>Let <var>length</var> be the number of code units in <var>pattern</var>.</li><li>Repeat, while <var>beginIndex</var> is an integer index into <var>pattern</var><ol><li>Set <var>endIndex</var> to <emu-xref aoid="Call" id="_ref_34"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>pattern</var>, « <code>"}"</code>, <var>beginIndex</var> »).</li><li>Assert: <var>endIndex</var> is greater than <var>beginIndex</var>.</li><li>If <var>beginIndex</var> is greater than <var>nextIndex</var>, then<ol><li>Let <var>literal</var> be a substring of <var>pattern</var> from position <var>nextIndex</var>, inclusive, to position <var>beginIndex</var>, exclusive.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"literal"</code>, [[Value]]: <var>literal</var> } as the last element of <var>result</var>.</li></ol></li><li>Let <var>p</var> be the substring of <var>pattern</var> from position <var>beginIndex</var>, exclusive, to position <var>endIndex</var>, exclusive.</li><li>If <var>p</var> is equal to <code>"number"</code>, then<ol><li>If <var>x</var> is <emu-val>NaN</emu-val>, then<ol><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"nan"</code>, [[Value]]: <var>n</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>x</var> is not a finite Number,<ol><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"infinity"</code>, [[Value]]: <var>n</var> } as the last element of <var>result</var>.</li></ol></li><li>Else,<ol><li>If the <var>numberFormat</var>.[[NumberingSystem]] matches one of the values in the <code>"Numbering System"</code> column of <emu-xref href="#table-numbering-system-digits" id="_ref_0"><a href="#table-numbering-system-digits">Table 1</a></emu-xref> below, then<ol><li>Let <var>digits</var> be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> whose 10 String valued elements are the UTF-16 string representations of the 10 <var>digits</var> specified in the <code>"Digits"</code> column of the matching row in <emu-xref href="#table-numbering-system-digits" id="_ref_1"><a href="#table-numbering-system-digits">Table 1</a></emu-xref>.</li><li>Replace each <var>digit</var> in <var>n</var> with the value of <var>digits</var>[<var>digit</var>].</li></ol></li><li>Else use an implementation dependent algorithm to map <var>n</var> to the appropriate representation of <var>n</var> in the given numbering system.</li><li>Let <var>decimalSepIndex</var> be <emu-xref aoid="Call" id="_ref_35"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>n</var>, « <code>"."</code>, 0 »).</li><li>If <var>decimalSepIndex</var> &gt; 0, then<ol><li>Let <var>integer</var> be the substring of <var>n</var> from position 0, inclusive, to position <var>decimalSepIndex</var>, exclusive.</li><li>Let <var>fraction</var> be the substring of <var>n</var> from position <var>decimalSepIndex</var>, exclusive, to the end of <var>n</var>.</li></ol></li><li>Else,<ol><li>Let <var>integer</var> be <var>n</var>.</li><li>Let <var>fraction</var> be <emu-val>undefined</emu-val>.</li></ol></li><li>If the <var>numberFormat</var>.[[UseGrouping]] is <emu-val>true</emu-val>, then<ol><li>Let <var>groupSepSymbol</var> be the implementation-, locale-, and numbering system-dependent (ILND) String representing the grouping separator.</li><li>Let <var>groups</var> be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> whose elements are, in left to right order, the substrings defined by ILND set of locations within the <var>integer</var>.</li><li>Assert: The number of elements in <var>groups</var> <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> is greater than 0.</li><li>Repeat, while <var>groups</var> <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> is not empty<ol><li>Remove the first element from <var>groups</var> and let <var>integerGroup</var> be the value of that element.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"integer"</code>, [[Value]]: <var>integerGroup</var> } as the last element of <var>result</var>.</li><li>If <var>groups</var> <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">List</a></emu-xref> is not empty, then<ol><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"group"</code>, [[Value]]: <var>groupSepSymbol</var> } as the last element of <var>result</var>.</li></ol></li></ol></li></ol></li><li>Else,<ol><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"integer"</code>, [[Value]]: <var>integer</var> } as the last element of <var>result</var>.</li></ol></li><li>If <var>fraction</var> is not <emu-val>undefined</emu-val>, then<ol><li>Let <var>decimalSepSymbol</var> be the ILND String representing the decimal separator.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"decimal"</code>, [[Value]]: <var>decimalSepSymbol</var> } as the last element of <var>result</var>.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"fraction"</code>, [[Value]]: <var>fraction</var> } as the last element of <var>result</var>.</li></ol></li></ol></li></ol></li><li>Else if <var>p</var> is equal to <code>"plusSign"</code>, then<ol><li>Let <var>plusSignSymbol</var> be the ILND String representing the plus sign.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"plusSign"</code>, [[Value]]: <var>plusSignSymbol</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"minusSign"</code>, then<ol><li>Let <var>minusSignSymbol</var> be the ILND String representing the minus sign.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"minusSign"</code>, [[Value]]: <var>minusSignSymbol</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"compactSymbol"</code>, then<ol><li>Let <var>compactSymbol</var> be an ILD string representing <var>exponent</var> in short form, which may depend on <var>x</var> in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a <code>"{compactSymbol}"</code> placeholder.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"compact"</code>, [[Value]]: <var>compactSymbol</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"compactName"</code>, then<ol><li>Let <var>compactName</var> be an ILD string representing <var>exponent</var> in long form, which may depend on <var>x</var> in languages having different plural forms. The implementation must be able to provide this string, or else the pattern would not have a <code>"{compactName}"</code> placeholder.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"compact"</code>, [[Value]]: <var>compactName</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"scientificSeparator"</code>, then<ol><li>Let <var>scientificSeparator</var> be the ILND String representing the exponent separator.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"exponentSeparator"</code>, [[Value]]: <var>scientificSeparator</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"scientificExponent"</code>, then<ol><li>If <var>exponent</var> &lt; 0, then<ol><li>Let <var>minusSignSymbol</var> be the ILND String representing the minus sign.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"exponentMinusSign"</code>, [[Value]]: <var>minusSignSymbol</var> } as the last element of <var>result</var>.</li><li>Let <var>exponent</var> be -<var>exponent</var>.</li></ol></li><li>Let <var>exponentResult</var> be <emu-xref aoid="ToRawFixed" id="_ref_36"><a href="#sec-torawfixed">ToRawFixed</a></emu-xref>(<var>exponent</var>, 1, 0, 0).</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"exponentInteger"</code>, [[Value]]: <var>exponentResult</var>.[[FormattedString]] } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"percentSign"</code>, then<ol><li>Let <var>percentSignSymbol</var> be the ILND String representing the percent sign.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"percentSign"</code>, [[Value]]: <var>percentSignSymbol</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"unitSymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"unit"</code> or <code>"percent"</code>, then<ol><li>Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</li><li>Let <var>mu</var> be an ILD string representing <var>unit</var> in short form, which may depend on <var>x</var> in languages having different plural forms.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unit"</code>, [[Value]]: <var>mu</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"unitNarrowSymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"unit"</code> or <code>"percent"</code>, then<ol><li>Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</li><li>Let <var>mu</var> be an ILD string representing <var>unit</var> in narrow form, which may depend on <var>x</var> in languages having different plural forms.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unit"</code>, [[Value]]: <var>mu</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"unitName"</code> and <var>numberFormat</var>.[[Style]] is <code>"unit"</code> or <code>"percent"</code>, then<ol><li>Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</li><li>Let <var>mu</var> be an ILD string representing <var>unit</var> in long form, which may depend on <var>x</var> in languages having different plural forms.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unit"</code>, [[Value]]: <var>mu</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"currencyCode"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then<ol><li>Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</li><li>Let <var>cd</var> be <var>currency</var>.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"currencySymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then<ol><li>Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</li><li>Let <var>cd</var> be an ILD string representing <var>currency</var> in short form. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"currencyNarrowSymbol"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then<ol><li>Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</li><li>Let <var>cd</var> be an ILD string representing <var>currency</var> in narrow form. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</li></ol></li><li>Else if <var>p</var> is equal to <code>"currencyName"</code> and <var>numberFormat</var>.[[Style]] is <code>"currency"</code>, then<ol><li>Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</li><li>Let <var>cd</var> be an ILD string representing <var>currency</var> in long form, which may depend on <var>x</var> in languages having different plural forms. If the implementation does not have such a representation of <var>currency</var>, use <var>currency</var> itself.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"currency"</code>, [[Value]]: <var>cd</var> } as the last element of <var>result</var>.</li></ol></li><li>Else,<ol><li>Let <var>unknown</var> be an ILND String based on <var>x</var> and <var>p</var>.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"unknown"</code>, [[Value]]: <var>unknown</var> } as the last element of <var>result</var>.</li></ol></li><li>Set <var>nextIndex</var> to <var>endIndex</var> + 1.</li><li>Set <var>beginIndex</var> to <emu-xref aoid="Call" id="_ref_37"><a href="https://tc39.github.io/ecma262/#sec-call">Call</a></emu-xref>(%StringProto_indexOf%, <var>pattern</var>, « <code>"{"</code>, <var>nextIndex</var> »).</li></ol></li><li>If <var>nextIndex</var> is less than <var>length</var>, then<ol><li>Let <var>literal</var> be the substring of <var>pattern</var> from position <var>nextIndex</var>, inclusive, to position <var>length</var>, exclusive.</li><li>Append a new <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[Type]]: <code>"literal"</code>, [[Value]]: <var>literal</var> } as the last element of <var>result</var>.</li></ol></li><li>Return <var>result</var>.
+      </li></ol></emu-alg>
+
+      <emu-table id="table-numbering-system-digits"><figure><figcaption>Table 1: Numbering systems with simple digit mappings</figcaption>
+        
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Numbering System</th>
+              <th>Digits</th>
+            </tr>
+          </thead>
+          <tbody><tr>
+            <td>arab</td>
+            <td>U+0660 to U+0669</td>
+          </tr>
+          <tr>
+            <td>arabext</td>
+            <td>U+06F0 to U+06F9</td>
+          </tr>
+          <tr>
+            <td>bali</td>
+            <td>U+1B50 to U+1B59</td>
+          </tr>
+          <tr>
+            <td>beng</td>
+            <td>U+09E6 to U+09EF</td>
+          </tr>
+          <tr>
+            <td>deva</td>
+            <td>U+0966 to U+096F</td>
+          </tr>
+          <tr>
+            <td>fullwide</td>
+            <td>U+FF10 to U+FF19</td>
+          </tr>
+          <tr>
+            <td>gujr</td>
+            <td>U+0AE6 to U+0AEF</td>
+          </tr>
+          <tr>
+            <td>guru</td>
+            <td>U+0A66 to U+0A6F</td>
+          </tr>
+          <tr>
+            <td>hanidec</td>
+            <td>U+3007, U+4E00, U+4E8C, U+4E09, U+56DB, U+4E94, U+516D, U+4E03, U+516B, U+4E5D</td>
+          </tr>
+          <tr>
+            <td>khmr</td>
+            <td>U+17E0 to U+17E9</td>
+          </tr>
+          <tr>
+            <td>knda</td>
+            <td>U+0CE6 to U+0CEF</td>
+          </tr>
+          <tr>
+            <td>laoo</td>
+            <td>U+0ED0 to U+0ED9</td>
+          </tr>
+          <tr>
+            <td>latn</td>
+            <td>U+0030 to U+0039</td>
+          </tr>
+          <tr>
+            <td>limb</td>
+            <td>U+1946 to U+194F</td>
+          </tr>
+          <tr>
+            <td>mlym</td>
+            <td>U+0D66 to U+0D6F</td>
+          </tr>
+          <tr>
+            <td>mong</td>
+            <td>U+1810 to U+1819</td>
+          </tr>
+          <tr>
+            <td>mymr</td>
+            <td>U+1040 to U+1049</td>
+          </tr>
+          <tr>
+            <td>orya</td>
+            <td>U+0B66 to U+0B6F</td>
+          </tr>
+          <tr>
+            <td>tamldec</td>
+            <td>U+0BE6 to U+0BEF</td>
+          </tr>
+          <tr>
+            <td>telu</td>
+            <td>U+0C66 to U+0C6F</td>
+          </tr>
+          <tr>
+            <td>thai</td>
+            <td>U+0E50 to U+0E59</td>
+          </tr>
+          <tr>
+            <td>tibt</td>
+            <td>U+0F20 to U+0F29</td>
+          </tr>
+        </tbody></table>
+      </figure></emu-table>
+
+      <emu-note><span class="note">Note 1</span><div class="note-contents">
+        The computations rely on String values and locations within numeric strings that are dependent upon the implementation and the effective locale of <var>numberFormat</var> ("ILD") or upon the implementation, the effective locale, and the numbering system of <var>numberFormat</var> ("ILND"). The ILD and ILND Strings mentioned, other than those for currency names, must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.
+      
+      </div></emu-note>
+
+      <emu-note><span class="note">Note 2</span><div class="note-contents">
+        It is recommended that implementations use the locale provided by the Common Locale Data Repository (available at  <a href="http://cldr.unicode.org/">http://cldr.unicode.org/</a>).
+      
+      </div></emu-note>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumber" aoid="FormatNumber">
+      <h1><span class="secnum">1.1.7</span>FormatNumber( <var>numberFormat</var>, <var>x</var> )</h1>
+
+      <p>
+        The FormatNumber abstract operation is called with arguments <var>numberFormat</var> (which must be an object initialized as a NumberFormat) and <var>x</var> (which must be a Number value), and performs the following steps:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>parts</var> be ?&nbsp;<emu-xref aoid="PartitionNumberPattern" id="_ref_38"><a href="#sec-partitionnumberpattern">PartitionNumberPattern</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>Let <var>result</var> be the empty String.</li><li>For each <var>part</var> in <var>parts</var>, do<ol><li>Set <var>result</var> to a String value produced by concatenating <var>result</var> and <var>part</var>.[[Value]].</li></ol></li><li>Return <var>result</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-formatnumbertoparts" aoid="FormatNumberToParts">
+      <h1><span class="secnum">1.1.8</span>FormatNumberToParts( <var>numberFormat</var>, <var>x</var> )</h1>
+
+      <p>
+        The FormatNumberToParts abstract operation is called with arguments <var>numberFormat</var> (which must be an object initialized as a NumberFormat) and <var>x</var> (which must be a Number value), and performs the following steps:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>parts</var> be ?&nbsp;<emu-xref aoid="PartitionNumberPattern" id="_ref_39"><a href="#sec-partitionnumberpattern">PartitionNumberPattern</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>Let <var>result</var> be <emu-xref aoid="ArrayCreate" id="_ref_40"><a href="https://tc39.github.io/ecma262/#sec-arraycreate">ArrayCreate</a></emu-xref>(0).</li><li>Let <var>n</var> be 0.</li><li>For each <var>part</var> in <var>parts</var>, do<ol><li>Let <var>O</var> be <emu-xref aoid="ObjectCreate" id="_ref_41"><a href="https://tc39.github.io/ecma262/#sec-objectcreate">ObjectCreate</a></emu-xref>(<emu-xref href="#sec-properties-of-the-object-prototype-object"><a href="https://tc39.github.io/ecma262/#sec-properties-of-the-object-prototype-object">%ObjectPrototype%</a></emu-xref>).</li><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_42"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>O</var>, <code>"type"</code>, <var>part</var>.[[Type]]).</li><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_43"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>O</var>, <code>"value"</code>, <var>part</var>.[[Value]]).</li><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_44"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>result</var>, !&nbsp;<emu-xref aoid="ToString" id="_ref_45"><a href="https://tc39.github.io/ecma262/#sec-tostring">ToString</a></emu-xref>(<var>n</var>), <var>O</var>).</li><li>Increment <var>n</var> by 1.</li></ol></li><li>Return <var>result</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-torawprecision" aoid="ToRawPrecision">
+      <h1><span class="secnum">1.1.9</span>ToRawPrecision( <var>x</var>, <var>minPrecision</var>, <var>maxPrecision</var> )</h1>
+
+      <p>
+        When the ToRawPrecision abstract operation is called with arguments <var>x</var> (which must be a finite non-negative number), <var>minPrecision</var>, and <var>maxPrecision</var> (both must be integers between 1 and 21), the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>p</var> be <var>maxPrecision</var>.</li><li>If <var>x</var> = 0, then<ol><li>Let <var>m</var> be the String consisting of <var>p</var> occurrences of the character <code>"0"</code>.</li><li>Let <var>e</var> be 0.</li><li>Let <var>xFinal</var> be 0.</li></ol></li><li>Else,<ol><li>Let <var>e</var> be the base 10 logarithm of <var>x</var> rounded down to the nearest integer.</li><li>Let <var>n</var> be an integer such that 10<sup><var>p</var>–1</sup> ≤ <var>n</var> &lt; 10<sup><var>p</var></sup> and for which the exact mathematical value of <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup> – <var>x</var> is as close to zero as possible. If there is more than one such <var>n</var>, pick the one for which <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup> is larger.</li><li>Let <var>m</var> be the String consisting of the digits of the decimal representation of <var>n</var> (in order, with no leading zeroes).</li><li>Let <var>xFinal</var> be <var>n</var> × 10<sup><var>e</var>–<var>p</var>+1</sup>.</li></ol></li><li>If <var>e</var> ≥ <var>p</var>–1, then<ol><li>Let <var>m</var> be the concatenation of <var>m</var> and <var>e</var>–<var>p</var>+1 occurrences of the character <code>"0"</code>.</li><li>Let <var>int</var> be <var>e</var>+1.</li></ol></li><li>Else If <var>e</var> ≥ 0, then<ol><li>Let <var>m</var> be the concatenation of the first <var>e</var>+1 characters of <var>m</var>, the character <code>"."</code>, and the remaining <var>p</var>–(<var>e</var>+1) characters of <var>m</var>.</li><li>Let <var>int</var> be <var>e</var>+1.</li></ol></li><li>Else,<ol><li>Assert: <var>e</var> &lt; 0.</li><li>Let <var>m</var> be the concatenation of the String <code>"0."</code>, –(<var>e</var>+1) occurrences of the character <code>"0"</code>, and the string <var>m</var>.</li><li>Let <var>int</var> be 1.</li></ol></li><li>If <var>m</var> contains the character <code>"."</code>, and <var>maxPrecision</var> &gt; <var>minPrecision</var>, then<ol><li>Let <var>cut</var> be <var>maxPrecision</var> – <var>minPrecision</var>.</li><li>Repeat, while <var>cut</var> &gt; 0 and the last character of <var>m</var> is <code>"0"</code><ol><li>Remove the last character from <var>m</var>.</li><li>Decrease <var>cut</var> by 1.</li></ol></li><li>If the last character of <var>m</var> is <code>"."</code>, then<ol><li>Remove the last character from <var>m</var>.</li></ol></li></ol></li><li>Return the <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[FormattedString]]: <var>m</var>, [[RoundedNumber]]: <var>xFinal</var>, [[IntegerDigitsCount]]: <var>int</var> }.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-torawfixed" aoid="ToRawFixed">
+      <h1><span class="secnum">1.1.10</span>ToRawFixed( <var>x</var>, <var>minInteger</var>, <var>minFraction</var>, <var>maxFraction</var> )</h1>
+
+      <p>
+        When the ToRawFixed abstract operation is called with arguments <var>x</var> (which must be a finite non-negative number), <var>minInteger</var> (which must be an integer between 1 and 21), <var>minFraction</var>, and <var>maxFraction</var> (which must be integers between 0 and 20), the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>f</var> be <var>maxFraction</var>.</li><li>Let <var>n</var> be an integer for which the exact mathematical value of <var>n</var> ÷ 10<sup><var>f</var></sup> – <var>x</var> is as close to zero as possible. If there are two such <var>n</var>, pick the larger <var>n</var>.</li><li>Let <var>xFinal</var> be <var>n</var> ÷ 10<sup><var>f</var></sup>.</li><li>If <var>n</var> = 0, let <var>m</var> be the String <code>"0"</code>. Otherwise, let <var>m</var> be the String consisting of the digits of the decimal representation of <var>n</var> (in order, with no leading zeroes).</li><li>If <var>f</var> ≠ 0, then<ol><li>Let <var>k</var> be the number of characters in <var>m</var>.</li><li>If <var>k</var> ≤ <var>f</var>, then<ol><li>Let <var>z</var> be the String consisting of <var>f</var>+1–<var>k</var> occurrences of the character <code>"0"</code>.</li><li>Let <var>m</var> be the concatenation of Strings <var>z</var> and <var>m</var>.</li><li>Let <var>k</var> be <var>f</var>+1.</li></ol></li><li>Let <var>a</var> be the first <var>k</var>–<var>f</var> characters of <var>m</var>, and let <var>b</var> be the remaining <var>f</var> characters of <var>m</var>.</li><li>Let <var>m</var> be the concatenation of the three Strings <var>a</var>, <code>"."</code>, and <var>b</var>.</li><li>Let <var>int</var> be the number of characters in <var>a</var>.</li></ol></li><li>Else, let <var>int</var> be the number of characters in <var>m</var>.</li><li>Let <var>cut</var> be <var>maxFraction</var> – <var>minFraction</var>.</li><li>Repeat, while <var>cut</var> &gt; 0 and the last character of <var>m</var> is <code>"0"</code><ol><li>Remove the last character from <var>m</var>.</li><li>Decrease <var>cut</var> by 1.</li></ol></li><li>If the last character of <var>m</var> is <code>"."</code>, then<ol><li>Remove the last character from <var>m</var>.</li></ol></li><li>Return the <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> { [[FormattedString]]: <var>m</var>, [[RoundedNumber]]: <var>xFinal</var>, [[IntegerDigitsCount]]: <var>int</var> }.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-unwrapnumberformat" aoid="UnwrapNumberFormat">
+      <h1><span class="secnum">1.1.11</span>UnwrapNumberFormat( <var>nf</var> )</h1>
+      <p>
+        The UnwrapNumberFormat abstract operation gets the underlying NumberFormat operation
+        for various methods which implement ECMA-402 v1 semantics for supporting initializing
+        existing Intl objects.
+      
+      </p>
+      <emu-alg><ol><li>Assert: <emu-xref aoid="Type" id="_ref_46"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is Object.
+      </li></ol></emu-alg>
+      <emu-normative-optional>
+      <emu-alg><ol start="2"><li>If <var>nf</var> does not have an [[InitializedNumberFormat]] internal slot and ?&nbsp;<emu-xref aoid="InstanceofOperator" id="_ref_47"><a href="https://tc39.github.io/ecma262/#sec-instanceofoperator">InstanceofOperator</a></emu-xref>(<var>nf</var>, <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_48"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>) is <emu-val>true</emu-val>, then<ol><li>Let <var>nf</var> be ?&nbsp;<emu-xref aoid="Get" id="_ref_49"><a href="https://tc39.github.io/ecma262/#sec-get-o-p">Get</a></emu-xref>(<var>nf</var>, %Intl%.[[FallbackSymbol]]).
+      </li></ol></li></ol></emu-alg>
+      </emu-normative-optional>
+      <emu-alg><ol start="3"><li>If <emu-xref aoid="Type" id="_ref_50"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object or <var>nf</var> does not have an [[InitializedNumberFormat]] internal slot, then<ol><li>Throw a <emu-val>TypeError</emu-val> exception.</li></ol></li><li>Return <var>nf</var>.
+      </li></ol></emu-alg>
+      <emu-note><span class="note">Note</span><div class="note-contents">See  <emu-xref href="#legacy-constructor"></emu-xref> for the motivation of the normative optional text.</div></emu-note>
+    </emu-clause>
+
+    <emu-clause id="sec-setnumberformatunitoptions" aoid="SetNumberFormatUnitOptions">
+      <h1><span class="secnum">1.1.12</span>SetNumberFormatUnitOptions ( <var>intlObj</var>, <var>options</var> )</h1>
+      <p>
+        The abstract operation SetNumberFormatUnitOptions resolves the user-specified options relating to units onto the intl object.
+      
+      </p>
+      <emu-alg><ol><li>Assert: <emu-xref aoid="Type" id="_ref_51"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>intlObj</var>) is Object.</li><li>Assert: <emu-xref aoid="Type" id="_ref_52"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>options</var>) is Object.</li><li>Let <var>style</var> be ?&nbsp;GetOption(<var>options</var>, <code>"style"</code>, <code>"string"</code>, « <code>"decimal"</code>, <code>"percent"</code>, <code>"currency"</code>, <code>"unit"</code> », <code>"decimal"</code>).</li><li>Set <var>intlObj</var>.[[Style]] to <var>style</var>.</li><li>Let <var>currency</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currency"</code>, <code>"string"</code>, <emu-val>undefined</emu-val>, <emu-val>undefined</emu-val>).</li><li>Let <var>currencyDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currencyDisplay"</code>, <code>"string"</code>, « <code>"code"</code>, <code>"symbol"</code>, <code>"narrowSymbol"</code>, <code>"name"</code> », <code>"symbol"</code>).</li><li>Let <var>currencySign</var> be ?&nbsp;GetOption(<var>options</var>, <code>"currencySign"</code>, <code>"string"</code>, « <code>"standard"</code>, <code>"accounting"</code> », <code>"standard"</code>).</li><li>Let <var>unit</var> be ?&nbsp;GetOption(<var>options</var>, <code>"unit"</code>, <code>"string"</code>, <emu-val>undefined</emu-val>, <emu-val>undefined</emu-val>).</li><li>Let <var>unitDisplay</var> be ?&nbsp;GetOption(<var>options</var>, <code>"unitDisplay"</code>, <code>"string"</code>, « <code>"short"</code>, <code>"narrow"</code>, <code>"long"</code> », <code>"short"</code>).</li><li>If <var>style</var> is <code>"currency"</code>, then<ol><li>If <var>currency</var> is <emu-val>undefined</emu-val>, throw a <emu-val>TypeError</emu-val> exception.</li><li>If the result of IsWellFormedCurrencyCode(<var>currency</var>) is <emu-val>false</emu-val>, throw a <emu-val>RangeError</emu-val> exception.</li><li>Let <var>currency</var> be the result of converting <var>currency</var> to upper case as specified in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.</li><li>Set <var>intlObj</var>.[[Currency]] to <var>currency</var>.</li><li>Set <var>intlObj</var>.[[CurrencyDisplay]] to <var>currencyDisplay</var>.</li><li>Set <var>intlObj</var>.[[CurrencySign]] to <var>currencySign</var>.</li></ol></li><li>If <var>style</var> is <code>"percent"</code>, then<ol><li>Let <var>unit</var> be <code>"percent"</code>.</li></ol></li><li>If <var>style</var> is <code>"unit"</code> or <code>"percent"</code>, then<ol><li>If <var>unit</var> is <emu-val>undefined</emu-val>, throw a <emu-val>TypeError</emu-val> exception.</li><li>If the result of IsWellFormedUnitIdentifier(<var>unit</var>) is <emu-val>false</emu-val>, throw a <emu-val>RangeError</emu-val> exception.</li><li>Set <var>intlObj</var>.[[Unit]] to <var>unit</var>.</li><li>Set <var>intlObj</var>.[[UnitDisplay]] to <var>unitDisplay</var>.
+      </li></ol></li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-getnumberformatpattern" aoid="GetNumberFormatPattern">
+      <h1><span class="secnum">1.1.13</span>GetNumberFormatPattern ( <var>numberFormat</var>, <var>x</var>, <var>exponent</var> )</h1>
+      <p>
+        The abstract operation GetNumberFormatPattern considers the resolved unit-related options in the number format object along with the final scaled and rounded number being formatted and returns a pattern, a String value as described in  <emu-xref href="#sec-intl.numberformat-internal-slots" id="_ref_2"><a href="#sec-intl.numberformat-internal-slots">1.3.3</a></emu-xref>. 
+       
+      </p>
+      <emu-alg><ol><li>Let <var>localeData</var> be <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_53"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[LocaleData]].</li><li>Let <var>dataLocale</var> be <var>numberFormat</var>.[[DataLocale]].</li><li>Let <var>dataLocaleData</var> be <var>localeData</var>.[[&lt;<var>dataLocale</var>&gt;]].</li><li>Let <var>patterns</var> be <var>dataLocaleData</var>.[[patterns]].</li><li>Assert: <var>patterns</var> is a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> (see <emu-xref href="#sec-intl.numberformat-internal-slots" id="_ref_3"><a href="#sec-intl.numberformat-internal-slots">1.3.3</a></emu-xref>).</li><li>Let <var>style</var> be <var>numberFormat</var>.[[Style]].</li><li>If <var>style</var> is <code>"unit"</code> or <code>"percent"</code>, then<ol><li>Let <var>unit</var> be <var>numberFormat</var>.[[Unit]].</li><li>Let <var>unitDisplay</var> be <var>numberFormat</var>.[[UnitDisplay]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[<code>"unit"</code>]].</li><li>If <var>patterns</var>.[[&lt;<var>unit</var>&gt;]] is <emu-val>undefined</emu-val>, then<ol><li>Let <var>unit</var> be <code>"fallback"</code>.</li></ol></li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>unit</var>&gt;]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>unitDisplay</var>&gt;]].</li></ol></li><li>Else If <var>style</var> is <code>"currency"</code>, then<ol><li>Let <var>currency</var> be <var>numberFormat</var>.[[Currency]].</li><li>Let <var>currencyDisplay</var> be <var>numberFormat</var>.[[CurrencyDisplay]].</li><li>Let <var>currencySign</var> be <var>numberFormat</var>.[[CurrencySign]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[<code>"currency"</code>]].</li><li>If <var>patterns</var>.[[&lt;<var>currency</var>&gt;]] is <emu-val>undefined</emu-val>, then<ol><li>Let <var>currency</var> be <code>"fallback"</code>.</li></ol></li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>currency</var>&gt;]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>currencyDisplay</var>&gt;]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>currencySign</var>&gt;]].</li></ol></li><li>Else,<ol><li>Assert: <var>style</var> is <code>"decimal"</code>.</li><li>Let <var>patterns</var> be <var>patterns</var>.[[<code>"decimal"</code>]].</li></ol></li><li>Let <var>signDisplay</var> be <var>numberFormat</var>.[[SignDisplay]].</li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>signDisplay</var>&gt;]].</li><li>Let <var>notation</var> be <var>numberFormat</var>.[[Notation]].</li><li>Let <var>displayNotation</var> be <code>"standard"</code>.</li><li>If <var>notation</var> is <code>"scientific"</code> or <var>notation</var> is <code>"engineering"</code>, then<ol><li>Let <var>displayNotation</var> be <code>"scientific"</code>.</li></ol></li><li>Else If <var>exponent</var> is not 0, then<ol><li>Assert: <var>notation</var> is <code>"compact"</code>.</li><li>Let <var>compactDisplay</var> be <var>numberFormat</var>.[[CompactDisplay]].</li><li>If <var>compactDisplay</var> is <code>"short"</code>, then<ol><li>Let <var>displayNotation</var> be <code>"compactShort"</code>.</li></ol></li><li>Else,<ol><li>Assert: <var>compactDisplay</var> is <code>"long"</code>.</li><li>Let <var>displayNotation</var> be <code>"compactLong"</code>.</li></ol></li></ol></li><li>Let <var>patterns</var> be <var>patterns</var>.[[&lt;<var>displayNotation</var>&gt;]].</li><li>If <var>x</var> is not <emu-val>NaN</emu-val> and <var>x</var> &lt; 0 or <var>x</var> is <emu-val>-0</emu-val>, then<ol><li>Let <var>pattern</var> be <var>patterns</var>.[[negativePattern]].</li></ol></li><li>Else If <var>x</var> is 0, then<ol><li>Let <var>pattern</var> be <var>patterns</var>.[[zeroPattern]].</li></ol></li><li>Else,<ol><li>Let <var>pattern</var> be <var>patterns</var>.[[positivePattern]].</li></ol></li><li>Return <var>pattern</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-computeexponent" aoid="ComputeExponent">
+      <h1><span class="secnum">1.1.14</span>ComputeExponent ( <var>numberFormat</var>, <var>x</var> )</h1>
+      <p>
+        The abstract operation ComputeExponent computes an exponent (power of ten) by which to scale <var>x</var> according to the number formatting settings.  It handles cases such as 999 rounding up to 1000, requiring a different exponent.
+      
+      </p>
+      <emu-alg><ol><li>If <var>x</var> = 0, then<ol><li>Return 0.</li></ol></li><li>If <var>x</var> &lt; 0, then<ol><li>Let <var>x</var> = -<var>x</var>.</li></ol></li><li>Let <var>magnitude</var> be the base 10 logarithm of <var>x</var> rounded down to the nearest integer.</li><li>Let <var>exponent</var> be <emu-xref aoid="ComputeExponentForMagnitude" id="_ref_54"><a href="#sec-computeexponentformagnitude">ComputeExponentForMagnitude</a></emu-xref>(<var>numberFormat</var>, <var>magnitude</var>).</li><li>Let <var>x</var> be <var>x</var> × 10<sup>-<var>exponent</var></sup>.</li><li>Let <var>formatNumberResult</var> be <emu-xref aoid="FormatNumberToString" id="_ref_55"><a href="#sec-formatnumberstring">FormatNumberToString</a></emu-xref>(<var>numberFormat</var>, <var>x</var>).</li><li>If <var>formatNumberResult</var>.[[RoundedNumber]] = 0, then<ol><li>Return <var>exponent</var>.</li></ol></li><li>Let <var>newMagnitude</var> be the base 10 logarithm of <var>x</var> rounded down to the nearest integer.</li><li>If <var>newMagnitude</var> is <var>magnitude</var> – <var>exponent</var>, then<ol><li>Return <var>exponent</var>.</li></ol></li><li>Return <emu-xref aoid="ComputeExponentForMagnitude" id="_ref_56"><a href="#sec-computeexponentformagnitude">ComputeExponentForMagnitude</a></emu-xref>(<var>numberFormat</var>, <var>magnitude</var> + 1).
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-computeexponentformagnitude" aoid="ComputeExponentForMagnitude">
+      <h1><span class="secnum">1.1.15</span>ComputeExponentForMagnitude ( <var>numberFormat</var>, <var>magnitude</var> )</h1>
+      <p>
+        The abstract operation ComputeExponentHelper computes an exponent by which to scale a number of the given magnitude (power of ten of the most significant digit) according to the locale and the desired notation (scientific, engineering, or compact).
+      
+      </p>
+      <emu-alg><ol><li>Let <var>notation</var> be <var>numberFormat</var>.[[Notation]].</li><li>If <var>notation</var> is <code>"standard"</code>, then<ol><li>Return 0.</li></ol></li><li>Else If <var>notation</var> is <code>"scientific"</code>, then<ol><li>Return <var>magnitude</var>.</li></ol></li><li>Else If <var>notation</var> is <code>"engineering"</code>, then<ol><li>Let <var>thousands</var> be the greatest integer that is not greater than <var>magnitude</var> ÷ 3.</li><li>Return <var>thousands</var> × 3.</li></ol></li><li>Else,<ol><li>Assert: <var>notation</var> is <code>"compact"</code>.</li><li>Let <var>exponent</var> be an implementation-dependent integer by which to scale a number of the given magnitude in compact notation for the current locale.</li><li>Return <var>exponent</var>.
+      </li></ol></li></ol></emu-alg>
+    </emu-clause>
+  </emu-clause>
+
+  <emu-clause id="sec-intl-numberformat-constructor">
+    <h1><span class="secnum">1.2</span>The Intl.NumberFormat Constructor</h1>
+
+    <p>
+      The NumberFormat constructor is the  <dfn>%NumberFormat%</dfn> intrinsic object and a standard built-in property of the Intl object. Behaviour common to all service constructor properties of the Intl object is specified in  <emu-xref href="#sec-internal-slots"></emu-xref>.
+    
+    </p>
+
+    <emu-clause id="sec-intl.numberformat">
+      <h1><span class="secnum">1.2.1</span>Intl.NumberFormat ( [ <var>locales</var> [ , <var>options</var> ] ] )</h1>
+
+      <p>
+        When the <code>Intl.NumberFormat</code> function is called with optional arguments <var>locales</var> and <var>options</var>, the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If NewTarget is <emu-val>undefined</emu-val>, let <var>newTarget</var> be the <emu-xref href="#active-function-object"><a href="https://tc39.github.io/ecma262/#active-function-object">active function object</a></emu-xref>, else let <var>newTarget</var> be NewTarget.</li><li>Let <var>numberFormat</var> be ?&nbsp;<emu-xref aoid="OrdinaryCreateFromConstructor" id="_ref_57"><a href="https://tc39.github.io/ecma262/#sec-ordinarycreatefromconstructor">OrdinaryCreateFromConstructor</a></emu-xref>(<var>newTarget</var>, <code>"%NumberFormatPrototype%"</code>, « [[InitializedNumberFormat]], [[Locale]], [[DataLocale]], [[NumberingSystem]], [[Style]], [[Unit]], [[UnitDisplay]], [[Currency]], [[CurrencyDisplay]], [[CurrencySign]], [[MinimumIntegerDigits]], [[MinimumFractionDigits]], [[MaximumFractionDigits]], [[MinimumSignificantDigits]], [[MaximumSignificantDigits]], [[RoundingType]], [[Notation]], [[CompactDisplay]], [[UseGrouping]], [[SignDisplay]], [[BoundFormat]] »).</li><li>Perform ?&nbsp;<emu-xref aoid="InitializeNumberFormat" id="_ref_58"><a href="#sec-initializenumberformat">InitializeNumberFormat</a></emu-xref>(<var>numberFormat</var>, <var>locales</var>, <var>options</var>).
+      </li></ol></emu-alg>
+      <emu-normative-optional>
+      <emu-alg><ol start="4"><li>Let <var>this</var> be the <emu-val>this</emu-val> value.</li><li>If NewTarget is <emu-val>undefined</emu-val> and ?&nbsp;<emu-xref aoid="InstanceofOperator" id="_ref_59"><a href="https://tc39.github.io/ecma262/#sec-instanceofoperator">InstanceofOperator</a></emu-xref>(<var>this</var>, <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_60"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>) is <emu-val>true</emu-val>, then<ol><li>Perform ?&nbsp;<emu-xref aoid="DefinePropertyOrThrow" id="_ref_61"><a href="https://tc39.github.io/ecma262/#sec-definepropertyorthrow">DefinePropertyOrThrow</a></emu-xref>(<var>this</var>, %Intl%.[[FallbackSymbol]], PropertyDescriptor{ [[Value]]: <var>numberFormat</var>, [[Writable]]: <emu-val>false</emu-val>, [[Enumerable]]: <emu-val>false</emu-val>, [[Configurable]]: <emu-val>false</emu-val> }).</li><li>Return <var>this</var>.
+      </li></ol></li></ol></emu-alg>
+      </emu-normative-optional>
+      <emu-alg><ol start="6"><li>Return <var>numberFormat</var>.
+      </li></ol></emu-alg>
+    </emu-clause>
+    <emu-note><span class="note">Note</span><div class="note-contents">See  <emu-xref href="#legacy-constructor"></emu-xref> for the motivation of the normative optional text.</div></emu-note>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-constructor">
+    <h1><span class="secnum">1.3</span>Properties of the Intl.NumberFormat Constructor</h1>
+
+    <p>
+      The Intl.NumberFormat constructor has the following properties:
+    
+    </p>
+
+    <emu-clause id="sec-intl.numberformat.prototype">
+      <h1><span class="secnum">1.3.1</span>Intl.NumberFormat.prototype</h1>
+
+      <p>
+        The value of <code>Intl.NumberFormat.prototype</code> is <emu-xref href="#sec-properties-of-intl-numberformat-prototype-object" id="_ref_62"><a href="#sec-properties-of-intl-numberformat-prototype-object">%NumberFormatPrototype%</a></emu-xref>.
+      
+      </p>
+      <p>
+        This property has the attributes { [[Writable]]: <emu-val>false</emu-val>, [[Enumerable]]: <emu-val>false</emu-val>, [[Configurable]]: <emu-val>false</emu-val> }.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.supportedlocalesof">
+      <h1><span class="secnum">1.3.2</span>Intl.NumberFormat.supportedLocalesOf ( <var>locales</var> [ , <var>options</var> ] )</h1>
+
+      <p>
+        When the <code>supportedLocalesOf</code> method is called with arguments <var>locales</var> and <var>options</var>, the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>availableLocales</var> be <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_63"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.[[AvailableLocales]].</li><li>Let <var>requestedLocales</var> be ?&nbsp;CanonicalizeLocaleList(<var>locales</var>).</li><li>Return ?&nbsp;SupportedLocales(<var>availableLocales</var>, <var>requestedLocales</var>, <var>options</var>).
+      </li></ol></emu-alg>
+
+      <p>
+        The value of the <code>length</code> property of the <emu-val>supportedLocalesOf</emu-val> method is 1.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat-internal-slots">
+      <h1><span class="secnum">1.3.3</span>Internal slots</h1>
+
+      <p>
+        The value of the [[AvailableLocales]] internal slot is implementation defined within the constraints described in  <emu-xref href="#sec-internal-slots"></emu-xref>.
+      
+      </p>
+
+      <p>
+        The value of the [[RelevantExtensionKeys]] internal slot is « <code>"nu"</code> ».
+      
+      </p>
+
+      <emu-note><span class="note">Note 1</span><div class="note-contents">
+        Unicode Technical Standard 35 describes two locale extension keys that are relevant to number formatting, <code>"nu"</code> for numbering system and <code>"cu"</code> for currency. Intl.NumberFormat, however, requires that the currency of a currency format is specified through the currency property in the options objects.
+      
+      </div></emu-note>
+
+      <p>
+        The value of the [[LocaleData]] internal slot is implementation defined within the constraints described in  <emu-xref href="#sec-internal-slots"></emu-xref> and the following additional constraints:
+      
+      </p>
+
+      <ul>
+        <li>The list that is the value of the <code>"nu"</code> field of any locale field of [[LocaleData]] must not include the values <code>"native"</code>, <code>"traditio"</code>, or <code>"finance"</code>.</li>
+        <li>[[LocaleData]][locale] must have a patterns field for all locale values. The value of this field must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref>, which must have three fields: <code>"decimal"</code>, <code>"currency"</code>, and <code>"unit"</code>.</li>
+        <li>The two fields <code>"currency"</code> and <code>"unit"</code> noted above must be Records with at least one field, <code>"fallback"</code>. The <code>"currency"</code> may have additional fields with keys corresponding to currency codes according to  <emu-xref href="#sec-currency-codes"></emu-xref>.  Each field of <code>"currency"</code> must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with fields corresponding to the possible currencyDisplay values: <code>"code"</code>, <code>"symbol"</code>, <code>"narrowSymbol"</code>, and <code>"name"</code>.  Each of those fields must contain a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with fields corresponding to the possible currencySign values: <code>"standard"</code> or <code>"accounting"</code>. The <code>"unit"</code> field (of [[LocaleData]][locale]) may have additional fields beyond the required field <code>"fallback"</code> with keys corresponding to core measurement unit identifiers corresponding to  <emu-xref href="#sec-measurement-unit-identifiers"></emu-xref>.  Each field of <code>"unit"</code> must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with fields corresponding to the possible unitDisplay values: <code>"narrow"</code>, <code>"short"</code>, and <code>"long"</code>.</li>
+        <li>All of the leaf fields so far described for the patterns tree (<code>"decimal"</code>, great-grandchildren of <code>"currency"</code>, and grandchildren of <code>"unit"</code>) must be Records with fields corresponding to the possible signDisplay values: <code>"auto"</code>, <code>"always"</code>, <code>"never"</code>, and <code>"exceptZero"</code>.  Each of these fields must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with the keys <code>"standard"</code>, <code>"scientific"</code>, <code>"compactShort"</code>, and <code>"compactLong"</code>.  Each of these fields must be a <emu-xref href="#sec-list-and-record-specification-type"><a href="https://tc39.github.io/ecma262/#sec-list-and-record-specification-type">Record</a></emu-xref> with the keys <code>"positivePattern"</code>, <code>"zeroPattern"</code>, and <code>"negativePattern"</code>.</li>
+        <li>The value of the aforementioned fields (the sign-dependent pattern fields) must be string values that must contain the substring <code>"{number}"</code> and may contain the substrings <code>"{plusSign}"</code>, <code>"{minusSign}"</code>, <code>"{compactSymbol}"</code>, <code>"{compactName}"</code>, <code>"{scientificSeparator}"</code>, and <code>"{scientificExponent}"</code>; the values within the <code>"currency"</code> field must also contain one of the following substrings: <code>"{currencyCode}"</code>, <code>"{currencySymbol}"</code>, <code>"{currencyNarrowSymbol}"</code>, or <code>"{currencyName}"</code>; and the values within the <code>"unit"</code> field must also contain one of the following substrings: <code>"{percentSign}"</code>, <code>"{unitSymbol}"</code>, <code>"{unitNarrowSymbol}"</code>, or <code>"{unitName}"</code>. The pattern strings must not contain any characters in the General Category "Number, decimal digit" as specified by the Unicode Standard.</li>
+      </ul>
+
+      <emu-note><span class="note">Note 2</span><div class="note-contents">
+        It is recommended that implementations use the locale data provided by the Common Locale Data Repository (available at  <a href="http://cldr.unicode.org/">http://cldr.unicode.org/</a>).
+      
+      </div></emu-note>
+    </emu-clause>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-prototype-object">
+    <h1><span class="secnum">1.4</span>Properties of the Intl.NumberFormat Prototype Object</h1>
+
+    <p>
+      The Intl.NumberFormat prototype object is itself an ordinary object.  <dfn>%NumberFormatPrototype%</dfn> is not an Intl.NumberFormat instance and does not have an [[InitializedNumberFormat]] internal slot or any of the other internal slots of Intl.NumberFormat instance objects.
+    
+    </p>
+
+    <emu-clause id="sec-intl.numberformat.prototype.constructor">
+      <h1><span class="secnum">1.4.1</span>Intl.NumberFormat.prototype.constructor</h1>
+
+      <p>
+        The initial value of <code>Intl.NumberFormat.prototype.constructor</code> is the intrinsic object <emu-xref href="#sec-intl-numberformat-constructor" id="_ref_64"><a href="#sec-intl-numberformat-constructor">%NumberFormat%</a></emu-xref>.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype-@@tostringtag">
+      <h1><span class="secnum">1.4.2</span>Intl.NumberFormat.prototype [ @@toStringTag ]</h1>
+
+      <p>
+        The initial value of the @@toStringTag property is the string value <code>"Object"</code>.
+      
+      </p>
+      <p>
+        This property has the attributes { [[Writable]]: <emu-val>false</emu-val>, [[Enumerable]]: <emu-val>false</emu-val>, [[Configurable]]: <emu-val>true</emu-val> }.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.format">
+      <h1><span class="secnum">1.4.3</span>get Intl.NumberFormat.prototype.format</h1>
+
+      <p>
+        Intl.NumberFormat.prototype.format is an accessor property whose set accessor function is <emu-val>undefined</emu-val>. Its get accessor function performs the following steps:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be the <emu-val>this</emu-val> value.</li><li>If <emu-xref aoid="Type" id="_ref_65"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object, throw a <emu-val>TypeError</emu-val> exception.</li><li>Let <var>nf</var> be ?&nbsp;<emu-xref aoid="UnwrapNumberFormat" id="_ref_66"><a href="#sec-unwrapnumberformat">UnwrapNumberFormat</a></emu-xref>(<var>nf</var>).</li><li>If <var>nf</var>.[[BoundFormat]] is <emu-val>undefined</emu-val>, then<ol><li>Let <var>F</var> be a new built-in function object as defined in Number Format Functions (<emu-xref href="#sec-number-format-functions" id="_ref_4"><a href="#sec-number-format-functions">1.1.4</a></emu-xref>).</li><li>Set <var>F</var>.[[NumberFormat]] to <var>nf</var>.</li><li>Set <var>nf</var>.[[BoundFormat]] to <var>F</var>.</li></ol></li><li>Return <var>nf</var>.[[BoundFormat]].
+      </li></ol></emu-alg>
+
+      <emu-note><span class="note">Note</span><div class="note-contents">
+        The returned function is bound to <var>nf</var> so that it can be passed directly to <code>Array.prototype.map</code> or other functions.
+        This is considered a historical artefact, as part of a convention which is no longer followed for new features, but is preserved to maintain compatibility with existing programs.
+      
+      </div></emu-note>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.formattoparts">
+      <h1><span class="secnum">1.4.4</span>Intl.NumberFormat.prototype.formatToParts ( <var>value</var> )</h1>
+
+      <p>
+        When the <code>formatToParts</code> method is called with an optional argument <var>value</var>, the following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be the <emu-val>this</emu-val> value.</li><li>If <emu-xref aoid="Type" id="_ref_67"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object, throw a <emu-val>TypeError</emu-val> exception.</li><li>If <var>nf</var> does not have an [[InitializedNumberFormat]] internal slot, throw a <emu-val>TypeError</emu-val> exception.</li><li>Let <var>x</var> be ?&nbsp;<emu-xref aoid="ToNumber" id="_ref_68"><a href="https://tc39.github.io/ecma262/#sec-tonumber">ToNumber</a></emu-xref>(<var>value</var>).</li><li>Return ?&nbsp;<emu-xref aoid="FormatNumberToParts" id="_ref_69"><a href="#sec-formatnumbertoparts">FormatNumberToParts</a></emu-xref>(<var>nf</var>, <var>x</var>).
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-intl.numberformat.prototype.resolvedoptions">
+      <h1><span class="secnum">1.4.5</span>Intl.NumberFormat.prototype.resolvedOptions ()</h1>
+
+      <p>
+        This function provides access to the locale and formatting options computed during initialization of the object.
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>nf</var> be <emu-val>this</emu-val> value.</li><li>If <emu-xref aoid="Type" id="_ref_70"><a href="https://tc39.github.io/ecma262/#sec-ecmascript-data-types-and-values">Type</a></emu-xref>(<var>nf</var>) is not Object, throw a <emu-val>TypeError</emu-val> exception.</li><li>Let <var>nf</var> be ?&nbsp;<emu-xref aoid="UnwrapNumberFormat" id="_ref_71"><a href="#sec-unwrapnumberformat">UnwrapNumberFormat</a></emu-xref>(<var>nf</var>).</li><li>Let <var>options</var> be !&nbsp;<emu-xref aoid="ObjectCreate" id="_ref_72"><a href="https://tc39.github.io/ecma262/#sec-objectcreate">ObjectCreate</a></emu-xref>(<emu-xref href="#sec-properties-of-the-object-prototype-object"><a href="https://tc39.github.io/ecma262/#sec-properties-of-the-object-prototype-object">%ObjectPrototype%</a></emu-xref>).</li><li>For each row of <emu-xref href="#table-numberformat-resolvedoptions-properties" id="_ref_5"><a href="#table-numberformat-resolvedoptions-properties">Table 2</a></emu-xref>, except the header row, in table order, do<ol><li>Let <var>p</var> be the Property value of the current row.</li><li>Let <var>v</var> be the value of <var>nf</var>'s internal slot whose name is the Internal Slot value of the current row.</li><li>If <var>v</var> is not <emu-val>undefined</emu-val>, then<ol><li>Perform !&nbsp;<emu-xref aoid="CreateDataPropertyOrThrow" id="_ref_73"><a href="https://tc39.github.io/ecma262/#sec-createdatapropertyorthrow">CreateDataPropertyOrThrow</a></emu-xref>(<var>options</var>, <var>p</var>, <var>v</var>).</li></ol></li></ol></li><li>Return <var>options</var>.
+      </li></ol></emu-alg>
+
+      <emu-table id="table-numberformat-resolvedoptions-properties"><figure><figcaption>Table 2: Resolved Options of NumberFormat Instances</figcaption>
+        
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Internal Slot</th>
+              <th>Property</th>
+            </tr>
+          </thead>
+          <tbody><tr>
+            <td>[[Locale]]</td>
+            <td><code>"locale"</code></td>
+          </tr>
+          <tr>
+            <td>[[NumberingSystem]]</td>
+            <td><code>"numberingSystem"</code></td>
+          </tr>
+          <tr>
+            <td>[[Style]]</td>
+            <td><code>"style"</code></td>
+          </tr>
+          <tr>
+            <td>[[Currency]]</td>
+            <td><code>"currency"</code></td>
+          </tr>
+          <tr>
+            <td>[[CurrencyDisplay]]</td>
+            <td><code>"currencyDisplay"</code></td>
+          </tr>
+          <tr>
+            <td>[[CurrencySign]]</td>
+            <td><code>"currencySign"</code></td>
+          </tr>
+          <tr>
+            <td>[[Unit]]</td>
+            <td><code>"unit"</code></td>
+          </tr>
+          <tr>
+            <td>[[UnitDisplay]]</td>
+            <td><code>"unitDisplay"</code></td>
+          </tr>
+          <tr>
+            <td>[[MinimumIntegerDigits]]</td>
+            <td><code>"minimumIntegerDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MinimumFractionDigits]]</td>
+            <td><code>"minimumFractionDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MaximumFractionDigits]]</td>
+            <td><code>"maximumFractionDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MinimumSignificantDigits]]</td>
+            <td><code>"minimumSignificantDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[MaximumSignificantDigits]]</td>
+            <td><code>"maximumSignificantDigits"</code></td>
+          </tr>
+          <tr>
+            <td>[[UseGrouping]]</td>
+            <td><code>"useGrouping"</code></td>
+          </tr>
+          <tr>
+            <td>[[Notation]]</td>
+            <td><code>"notation"</code></td>
+          </tr>
+          <tr>
+            <td>[[CompactDisplay]]</td>
+            <td><code>"compactDisplay"</code></td>
+          </tr>
+          <tr>
+            <td>[[SignDisplay]]</td>
+            <td><code>"signDisplay"</code></td>
+          </tr>
+        </tbody></table>
+      </figure></emu-table>
+    </emu-clause>
+  </emu-clause>
+
+  <emu-clause id="sec-properties-of-intl-numberformat-instances">
+    <h1><span class="secnum">1.5</span>Properties of Intl.NumberFormat Instances</h1>
+
+    <p>
+      Intl.NumberFormat instances inherit properties from <emu-xref href="#sec-properties-of-intl-numberformat-prototype-object" id="_ref_74"><a href="#sec-properties-of-intl-numberformat-prototype-object">%NumberFormatPrototype%</a></emu-xref>.
+    
+    </p>
+
+    <p>
+      Intl.NumberFormat instances have an [[InitializedNumberFormat]] internal slot.
+    
+    </p>
+
+    <p>
+      Intl.NumberFormat instances also have several internal slots that are computed by the constructor:
+    
+    </p>
+
+    <ul>
+      <li>[[Locale]] is a String value with the language tag of the locale whose localization is used for formatting.</li>
+      <li>[[DataLocale]] is a String value with the language tag of the nearest locale for which the implementation has data to perform the formatting operation. It will be a parent locale of [[Locale]].</li>
+      <li>[[NumberingSystem]] is a String value with the "type" given in Unicode Technical Standard 35 for the numbering system used for formatting.</li>
+      <li>[[Style]] is one of the String values <code>"decimal"</code>, <code>"currency"</code>, <code>"percent"</code>, or <code>"unit"</code>, identifying the type of quantity being measured.</li>
+      <li>[[Currency]] is a String value with the currency code identifying the currency to be used if formatting with the <code>"currency"</code> unit type. It is only used when [[Style]] has the value <code>"currency"</code>.</li>
+      <li>[[CurrencyDisplay]] is one of the String values <code>"code"</code>, <code>"symbol"</code>, <code>"narrowSymbol"</code>, or <code>"name"</code>, specifying whether to display the currency as an ISO 4217 alphabetic currency code, a localized currency symbol, or a localized currency name if formatting with the <code>"currency"</code> style. It is only used when [[Style]] has the value <code>"currency"</code>.</li>
+      <li>[[CurrencySign]] is one of the String values <code>"standard"</code> or <code>"accounting"</code>, specifying whether to render negative numbers in accounting format, often signified by parenthesis. It is only used when [[Style]] has the value <code>"currency"</code> and when [[SignDisplay]] is not <code>"never"</code>.</li>
+      <li>[[Unit]] is a core unit identifier, as defined by Unicode Technical Standard #35, Part 2, Section 6. It is only used when [[Style]] has the value <code>"unit"</code> or <code>"percent"</code>.</li>
+      <li>[[UnitDisplay]] is one of the String values <code>"short"</code>, <code>"narrow"</code>, or <code>"long"</code>, specifying whether to display the unit as a symbol, narrow symbol, or localized long name if formatting with the <code>"unit"</code> or <code>"percent"</code> style. It is only used when [[Style]] has the value <code>"unit"</code> or <code>"percent"</code>.</li>
+      <li>[[MinimumIntegerDigits]] is a non-negative integer Number value indicating the minimum integer digits to be used. Numbers will be padded with leading zeroes if necessary.</li>
+      <li>[[MinimumFractionDigits]] and [[MaximumFractionDigits]] are non-negative integer Number values indicating the minimum and maximum fraction digits to be used. Numbers will be rounded or padded with trailing zeroes if necessary. These properties are only used when [[RoundingType]] is <code>"fractionDigits"</code>.</li>
+      <li>[[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] are positive integer Number values indicating the minimum and maximum fraction digits to be shown. If present, the formatter uses however many fraction digits are required to display the specified number of significant digits. These properties are only used when [[RoundingType]] is <code>"significantDigits"</code>.</li>
+      <li>[[UseGrouping]] is a Boolean value indicating whether a grouping separator should be used.</li>
+      <li>[[RoundingType]] is one of the String values <code>"fractionDigits"</code>, <code>"significantDigits"</code>, or <code>"compactRounding"</code>, indicating which rounding strategy to use. If <code>"fractionDigits"</code>, the number is rounded according to [[MinimumFractionDigits]] and [[MaximumFractionDigits]], as described above. If <code>"significantDigits"</code>, the number is rounded according to [[MinimumSignificantDigits]] and [[MaximumSignificantDigits]] as described above. If <code>"compactRounding"</code>, the number is rounded to 1 maximum fraction digit if there is 1 digit before the decimal separator, and otherwise round to 0 fraction digits.</li>
+      <li>[[Notation]]  is one of the String values <code>"standard"</code>, <code>"scientific"</code>, <code>"engineering"</code>, or <code>"compact"</code>, specifying whether the number should be displayed without scaling, scaled to the units place with the power of ten in scientific notation, scaled to the nearest thousand with the power of ten in scientific notation, or scaled to the nearest locale-dependent compact decimal notation power of ten with the corresponding compact decimal notation affix.</li>
+      <li>[[CompactDisplay]] is one of the String values <code>"short"</code> or <code>"long"</code>, specifying whether to display compact notation affixes in short form ("5K") or long form ("5 thousand") if formatting with the <code>"compact"</code> notation. It is only used when [[Notation]] has the value <code>"compact"</code>.</li>
+      <li>[[SignDisplay]] is one of the String values <code>"auto"</code>, <code>"always"</code>, <code>"never"</code>, or <code>"exceptZero"</code>, specifying whether to show the sign on negative numbers only, positive and negative numbers including zero, neither positive nor negative numbers, or positive and negative numbers but not zero.</li>
+    </ul>
+
+    <p>
+      Finally, Intl.NumberFormat instances have a [[BoundFormat]] internal slot that caches the function returned by the format accessor (<emu-xref href="#sec-intl.numberformat.prototype.format" id="_ref_6"><a href="#sec-intl.numberformat.prototype.format">1.4.3</a></emu-xref>).
+    
+    </p>
+  </emu-clause>
+</emu-clause>
+</div></body>
\ No newline at end of file
diff --git a/section6/locales-currencies-tz_current.html b/section6/locales-currencies-tz_current.html
new file mode 100644
index 0000000..4331e7c
--- /dev/null
+++ b/section6/locales-currencies-tz_current.html
@@ -0,0 +1,160 @@
+<emu-clause id="locales-currencies-tz">
+  <h1>Identification of Locales, Currencies, and Time Zones</h1>
+
+  <p>
+    This clause describes the String values used in the ECMAScript 2019 Internationalization API Specification to identify locales, currencies, and time zones.
+  </p>
+
+  <emu-clause id="sec-case-sensitivity-and-case-mapping">
+    <h1>Case Sensitivity and Case Mapping</h1>
+
+    <p>
+      The String values used to identify locales, currencies, and time zones are interpreted in a case-insensitive manner, treating the Unicode Basic Latin characters `"A"` to `"Z"` (U+0041 to U+005A) as equivalent to the corresponding Basic Latin characters `"a"` to `"z"` (U+0061 to U+007A). No other case folding equivalences are applied. When mapping to upper case, a mapping shall be used that maps characters in the range `"a"` to `"z"` (U+0061 to U+007A) to the corresponding characters in the range `"A"` to `"Z"` (U+0041 to U+005A) and maps no other characters to the latter range.
+    </p>
+
+    <p>
+      EXAMPLES `"ß"` (U+00DF) must not match or be mapped to `"SS"` (U+0053, U+0053). `"ı"` (U+0131) must not match or be mapped to `"I"` (U+0049).
+    </p>
+  </emu-clause>
+
+  <emu-clause id="sec-language-tags">
+    <h1>Language Tags</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies locales using language tags as defined by IETF BCP 47 (RFCs 5646 and 4647 or their successors), which may include extensions such as those registered through RFC 6067. Their canonical form is specified in RFC 5646 section 4.5 or its successor.
+    </p>
+
+    <p>
+      BCP 47 language tags that meet those validity criteria of RFC 5646 section 2.2.9 that can be verified without reference to the IANA Language Subtag Registry are considered structurally valid. All structurally valid language tags are valid for use with the APIs defined by this standard. However, the set of locales and thus language tags that an implementation supports with adequate localizations is implementation dependent. The constructors Collator, NumberFormat, DateTimeFormat, and PluralRules map the language tags used in requests to locales supported by their respective implementations.
+    </p>
+
+
+    <emu-clause id="sec-unicode-locale-extension-sequences">
+      <h1>Unicode Locale Extension Sequences</h1>
+
+      <p>
+        This standard uses the term `"Unicode locale extension sequence"` for any substring of a language tag that is not part of a private use subtag sequence, starts with a separator `"-"` and the singleton `"u"`, and includes the maximum sequence of following non-singleton subtags and their preceding `"-"` separators.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-isstructurallyvalidlanguagetag" aoid="IsStructurallyValidLanguageTag">
+      <h1>IsStructurallyValidLanguageTag ( _locale_ )</h1>
+
+      <p>
+        The IsStructurallyValidLanguageTag abstract operation verifies that the _locale_ argument (which must be a String value)
+      </p>
+
+      <ul>
+        <li>represents a well-formed BCP 47 language tag as specified in RFC 5646 section 2.1, or successor,</li>
+        <li>does not include duplicate variant subtags, and</li>
+        <li>does not include duplicate singleton subtags.</li>
+      </ul>
+
+      <p>
+        The abstract operation returns true if _locale_ can be generated from the ABNF grammar in section 2.1 of the RFC, starting with Language-Tag, and does not contain duplicate variant or singleton subtags (other than as a private use subtag). It returns false otherwise. Terminal value characters in the grammar are interpreted as the Unicode equivalents of the ASCII octet values given.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizelanguagetag" aoid="CanonicalizeLanguageTag">
+      <h1>CanonicalizeLanguageTag ( _locale_ )</h1>
+
+      <p>
+        The CanonicalizeLanguageTag abstract operation returns the canonical and case-regularized form of the _locale_ argument (which must be a String value that is a structurally valid BCP 47 language tag as verified by the IsStructurallyValidLanguageTag abstract operation).
+        A conforming implementation shall take the steps specified in RFC 5646 section 4.5, or successor, to bring the language tag into canonical form, and to regularize the case of the subtags. Furthermore, a conforming implementation shall not take the steps to bring a language tag into `"extlang form"`, nor shall it reorder variant subtags.
+      </p>
+
+      <p>
+        The specifications for extensions to BCP 47 language tags, such as RFC 6067, may include canonicalization rules for the extension subtag sequences they define that go beyond the canonicalization rules of RFC 5646 section 4.5. Implementations are allowed, but not required, to apply these additional rules.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaultlocale" aoid="DefaultLocale">
+      <h1>DefaultLocale ()</h1>
+
+      <p>
+        The DefaultLocale abstract operation returns a String value representing the structurally valid (<emu-xref href="#sec-isstructurallyvalidlanguagetag"></emu-xref>) and  canonicalized (<emu-xref href="#sec-canonicalizelanguagetag"></emu-xref>) BCP 47 language tag for the host environment's current locale.
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-currency-codes">
+    <h1>Currency Codes</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies currencies using 3-letter currency codes as defined by ISO 4217. Their canonical form is upper case.
+    </p>
+
+    <p>
+      All well-formed 3-letter ISO 4217 currency codes are allowed. However, the set of combinations of currency code and language tag for which localized currency symbols are available is implementation dependent. Where a localized currency symbol is not available, the ISO 4217 currency code is used for formatting.
+    </p>
+
+    <emu-clause id="sec-iswellformedcurrencycode" aoid="IsWellFormedCurrencyCode">
+      <h1>IsWellFormedCurrencyCode ( _currency_ )</h1>
+
+      <p>
+        The IsWellFormedCurrencyCode abstract operation verifies that the _currency_ argument (which must be a String value) represents a well-formed 3-letter ISO currency code. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _normalized_ be the result of mapping _currency_ to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+        1. If the number of elements in _normalized_ is not 3, return *false*.
+        1. If _normalized_ contains any character that is not in the range `"A"` to `"Z"` (U+0041 to U+005A), return *false*.
+        1. Return *true*.
+      </emu-alg>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-time-zone-names">
+    <h1>Time Zone Names</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies time zones using the Zone and Link names of the IANA Time Zone Database. Their canonical form is the corresponding Zone name in the casing used in the IANA Time Zone Database.
+    </p>
+
+    <p>
+      All registered Zone and Link names are allowed. Implementations must recognize all such names, and use best available current and historical information about their offsets from UTC and their daylight saving time rules in calculations. However, the set of combinations of time zone name and language tag for which localized time zone names are available is implementation dependent.
+    </p>
+
+    <emu-clause id="sec-isvalidtimezonename" aoid="IsValidTimeZoneName">
+      <h1>IsValidTimeZoneName ( _timeZone_ )</h1>
+
+      <p>
+        The IsValidTimeZoneName abstract operation verifies that the _timeZone_ argument (which must be a String value) represents a valid Zone or Link name of the IANA Time Zone Database.
+      </p>
+      <p>
+        The abstract operation returns true if _timeZone_, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>, is equal to one of the Zone or Link names of the IANA Time Zone Database, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>. It returns false otherwise.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizetimezonename" aoid="CanonicalizeTimeZoneName">
+      <h1>CanonicalizeTimeZoneName</h1>
+
+      <p>
+        The CanonicalizeTimeZoneName abstract operation returns the canonical and case-regularized form of the _timeZone_ argument (which must be a String value that is a valid time zone name as verified by the IsValidTimeZoneName abstract operation). The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _ianaTimeZone_ be the Zone or Link name of the IANA Time Zone Database such that _timeZone_, converted to  upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>, is equal to _ianaTimeZone_, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+        1. If _ianaTimeZone_ is a Link name, let _ianaTimeZone_ be the corresponding Zone name as specified in the `"backward"` file of the IANA Time Zone Database.
+        1. If _ianaTimeZone_ is `"Etc/UTC"` or `"Etc/GMT"`, return `"UTC"`.
+        1. Return _ianaTimeZone_.
+      </emu-alg>
+
+      <p>
+        The Intl.DateTimeFormat constructor allows this time zone name; if the time zone is not specified, the host environment's current time zone is used. Implementations shall support UTC and the host environment's current time zone (if different from UTC) in formatting.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaulttimezone" aoid="DefaultTimeZone">
+      <h1>DefaultTimeZone ()</h1>
+
+      <p>
+        The DefaultTimeZone abstract operation returns a String value representing the valid (<emu-xref href="#sec-isvalidtimezonename"></emu-xref>) and canonicalized (<emu-xref href="#sec-canonicalizetimezonename"></emu-xref>) time zone name for the host environment's current time zone.
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+</emu-clause>
diff --git a/section6/locales-currencies-tz_diff.html b/section6/locales-currencies-tz_diff.html
new file mode 100644
index 0000000..08f3231
--- /dev/null
+++ b/section6/locales-currencies-tz_diff.html
@@ -0,0 +1,264 @@
+<emu-clause id="locales-currencies-tz">
+  <h1>Identification of Locales, Currencies, <del>and</del> Time Zones<ins>, and Measurement Units</ins></h1>
+
+  <p>
+    This clause describes the String values used in the ECMAScript 2019 Internationalization API Specification to identify locales, currencies, time zones, and measurement units.
+  </p>
+
+  <emu-clause id="sec-case-sensitivity-and-case-mapping">
+    <h1>Case Sensitivity and Case Mapping</h1>
+
+    <p>
+      The String values used to identify locales, currencies, and time zones are interpreted in a case-insensitive manner, treating the Unicode Basic Latin characters `"A"` to `"Z"` (U+0041 to U+005A) as equivalent to the corresponding Basic Latin characters `"a"` to `"z"` (U+0061 to U+007A). No other case folding equivalences are applied. When mapping to upper case, a mapping shall be used that maps characters in the range `"a"` to `"z"` (U+0061 to U+007A) to the corresponding characters in the range `"A"` to `"Z"` (U+0041 to U+005A) and maps no other characters to the latter range.
+    </p>
+
+    <p>
+      EXAMPLES `"ß"` (U+00DF) must not match or be mapped to `"SS"` (U+0053, U+0053). `"ı"` (U+0131) must not match or be mapped to `"I"` (U+0049).
+    </p>
+  </emu-clause>
+
+  <emu-clause id="sec-language-tags">
+    <h1>Language Tags</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies locales using language tags as defined by IETF BCP 47 (RFCs 5646 and 4647 or their successors), which may include extensions such as those registered through RFC 6067. Their canonical form is specified in RFC 5646 section 4.5 or its successor.
+    </p>
+
+    <p>
+      BCP 47 language tags that meet those validity criteria of RFC 5646 section 2.2.9 that can be verified without reference to the IANA Language Subtag Registry are considered structurally valid. All structurally valid language tags are valid for use with the APIs defined by this standard. However, the set of locales and thus language tags that an implementation supports with adequate localizations is implementation dependent. The constructors Collator, NumberFormat, DateTimeFormat, and PluralRules map the language tags used in requests to locales supported by their respective implementations.
+    </p>
+
+
+    <emu-clause id="sec-unicode-locale-extension-sequences">
+      <h1>Unicode Locale Extension Sequences</h1>
+
+      <p>
+        This standard uses the term `"Unicode locale extension sequence"` for any substring of a language tag that is not part of a private use subtag sequence, starts with a separator `"-"` and the singleton `"u"`, and includes the maximum sequence of following non-singleton subtags and their preceding `"-"` separators.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-isstructurallyvalidlanguagetag" aoid="IsStructurallyValidLanguageTag">
+      <h1>IsStructurallyValidLanguageTag ( _locale_ )</h1>
+
+      <p>
+        The IsStructurallyValidLanguageTag abstract operation verifies that the _locale_ argument (which must be a String value)
+      </p>
+
+      <ul>
+        <li>represents a well-formed BCP 47 language tag as specified in RFC 5646 section 2.1, or successor,</li>
+        <li>does not include duplicate variant subtags, and</li>
+        <li>does not include duplicate singleton subtags.</li>
+      </ul>
+
+      <p>
+        The abstract operation returns true if _locale_ can be generated from the ABNF grammar in section 2.1 of the RFC, starting with Language-Tag, and does not contain duplicate variant or singleton subtags (other than as a private use subtag). It returns false otherwise. Terminal value characters in the grammar are interpreted as the Unicode equivalents of the ASCII octet values given.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizelanguagetag" aoid="CanonicalizeLanguageTag">
+      <h1>CanonicalizeLanguageTag ( _locale_ )</h1>
+
+      <p>
+        The CanonicalizeLanguageTag abstract operation returns the canonical and case-regularized form of the _locale_ argument (which must be a String value that is a structurally valid BCP 47 language tag as verified by the IsStructurallyValidLanguageTag abstract operation).
+        A conforming implementation shall take the steps specified in RFC 5646 section 4.5, or successor, to bring the language tag into canonical form, and to regularize the case of the subtags. Furthermore, a conforming implementation shall not take the steps to bring a language tag into `"extlang form"`, nor shall it reorder variant subtags.
+      </p>
+
+      <p>
+        The specifications for extensions to BCP 47 language tags, such as RFC 6067, may include canonicalization rules for the extension subtag sequences they define that go beyond the canonicalization rules of RFC 5646 section 4.5. Implementations are allowed, but not required, to apply these additional rules.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaultlocale" aoid="DefaultLocale">
+      <h1>DefaultLocale ()</h1>
+
+      <p>
+        The DefaultLocale abstract operation returns a String value representing the structurally valid (<emu-xref href="#sec-isstructurallyvalidlanguagetag"></emu-xref>) and  canonicalized (<emu-xref href="#sec-canonicalizelanguagetag"></emu-xref>) BCP 47 language tag for the host environment's current locale.
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-currency-codes">
+    <h1>Currency Codes</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies currencies using 3-letter currency codes as defined by ISO 4217. Their canonical form is upper case.
+    </p>
+
+    <p>
+      All well-formed 3-letter ISO 4217 currency codes are allowed. However, the set of combinations of currency code and language tag for which localized currency symbols are available is implementation dependent. Where a localized currency symbol is not available, the ISO 4217 currency code is used for formatting.
+    </p>
+
+    <emu-clause id="sec-iswellformedcurrencycode" aoid="IsWellFormedCurrencyCode">
+      <h1>IsWellFormedCurrencyCode ( _currency_ )</h1>
+
+      <p>
+        The IsWellFormedCurrencyCode abstract operation verifies that the _currency_ argument (which must be a String value) represents a well-formed 3-letter ISO currency code. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _normalized_ be the result of mapping _currency_ to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+        1. If the number of elements in _normalized_ is not 3, return *false*.
+        1. If _normalized_ contains any character that is not in the range `"A"` to `"Z"` (U+0041 to U+005A), return *false*.
+        1. Return *true*.
+      </emu-alg>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-time-zone-names">
+    <h1>Time Zone Names</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies time zones using the Zone and Link names of the IANA Time Zone Database. Their canonical form is the corresponding Zone name in the casing used in the IANA Time Zone Database.
+    </p>
+
+    <p>
+      All registered Zone and Link names are allowed. Implementations must recognize all such names, and use best available current and historical information about their offsets from UTC and their daylight saving time rules in calculations. However, the set of combinations of time zone name and language tag for which localized time zone names are available is implementation dependent.
+    </p>
+
+    <emu-clause id="sec-isvalidtimezonename" aoid="IsValidTimeZoneName">
+      <h1>IsValidTimeZoneName ( _timeZone_ )</h1>
+
+      <p>
+        The IsValidTimeZoneName abstract operation verifies that the _timeZone_ argument (which must be a String value) represents a valid Zone or Link name of the IANA Time Zone Database.
+      </p>
+      <p>
+        The abstract operation returns true if _timeZone_, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>, is equal to one of the Zone or Link names of the IANA Time Zone Database, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>. It returns false otherwise.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizetimezonename" aoid="CanonicalizeTimeZoneName">
+      <h1>CanonicalizeTimeZoneName</h1>
+
+      <p>
+        The CanonicalizeTimeZoneName abstract operation returns the canonical and case-regularized form of the _timeZone_ argument (which must be a String value that is a valid time zone name as verified by the IsValidTimeZoneName abstract operation). The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _ianaTimeZone_ be the Zone or Link name of the IANA Time Zone Database such that _timeZone_, converted to  upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>, is equal to _ianaTimeZone_, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+        1. If _ianaTimeZone_ is a Link name, let _ianaTimeZone_ be the corresponding Zone name as specified in the `"backward"` file of the IANA Time Zone Database.
+        1. If _ianaTimeZone_ is `"Etc/UTC"` or `"Etc/GMT"`, return `"UTC"`.
+        1. Return _ianaTimeZone_.
+      </emu-alg>
+
+      <p>
+        The Intl.DateTimeFormat constructor allows this time zone name; if the time zone is not specified, the host environment's current time zone is used. Implementations shall support UTC and the host environment's current time zone (if different from UTC) in formatting.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaulttimezone" aoid="DefaultTimeZone">
+      <h1>DefaultTimeZone ()</h1>
+
+      <p>
+        The DefaultTimeZone abstract operation returns a String value representing the valid (<emu-xref href="#sec-isvalidtimezonename"></emu-xref>) and canonicalized (<emu-xref href="#sec-canonicalizetimezonename"></emu-xref>) time zone name for the host environment's current time zone.
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <ins class="block">
+
+  <emu-clause id="sec-measurement-unit-identifiers">
+    <h1>Measurement Unit Identifiers</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies measurement units using a <em>core unit identifier</em> as defined by Unicode Technical Standard #35, Part 2, Section 6. Their canonical form is a string containing all lowercase letters with zero or more hyphens.
+    </p>
+
+    <p>
+      Only a limited set of core unit identifiers are allowed.  An illegal core unit identifier results in a RangeError.
+    </p>
+
+    <emu-clause id="sec-iswellformedunitidentifier" aoid="IsWellFormedUnitIdentifier">
+      <h1>IsWellFormedUnitIdentifier ( _unitIdentifier_ )</h1>
+
+      <p>
+        The IsWellFormedUnitIdentifier abstract operation verifies that the _unitIdentifier_ argument (which must be a String value) represents a well-formed core unit identifier as defined in UTS #35, Part 2, Section 6. In addition to obeying the UTS #35 core unit identifier syntax, _unitIdentifier_ must be one of the identifiers sanctioned by UTS #35 or be a compound unit composed of two sanctioned simple units. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. If the result of IsSanctionedSimpleUnitIdentifier(_unitIdentifier_) is *true*, then
+          1. Return *true*.
+        1. If the substring `"-per-"` does not occur exactly once in _unitIdentifier_, then
+          1. Return *false*.
+        1. Let _numerator_ be the substring of _unitIdentifier_ from the beginning to just before `"-per-"`.
+        1. If the result of IsSanctionedSimpleUnitIdentifier(_numerator_) is *false*, then
+          1. Return *false*.
+        1. Let _denominator_ be the substring of _unitIdentifier_ from just after `"-per-"` to the end.
+        1. If the result of IsSanctionedSimpleUnitIdentifier(_denominator_) is *false*, then
+          1. Return *false*.
+        1. Return *true*.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-issanctionedsimpleunitidentifier" aoid="IsSanctionedSimpleUnitIdentifier">
+      <h1>IsSanctionedSimpleUnitIdentifier ( _unitIdentifier_ )</h1>
+
+      <p>
+        The IsSanctionedSimpleUnitIdentifier abstract operation verifies that the given core unit identifier is among the simple units sanctioned in the current version of the ECMAScript standard, a subset of the Validity Data as described in UTS #35, Part 1, Section 3.11; the list may grow over time. As discussed in UTS #35, a simple unit is one that does not have a numerator and denominator. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. If _unitIdentifier_ is listed in <emu-xref href="#table-sanctioned-simple-unit-identifiers"></emu-xref> below, return *true*.
+        1. Else, Return *false*.
+      </emu-alg>
+
+      <emu-table id="table-sanctioned-simple-unit-identifiers">
+        <emu-caption>Simple units sanctioned for use in ECMAScript</emu-caption>
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Simple Unit</th>
+            </tr>
+          </thead>
+          <tr><td>acre</td></tr>
+          <tr><td>bit</td></tr>
+          <tr><td>byte</td></tr>
+          <tr><td>celsius</td></tr>
+          <tr><td>centimeter</td></tr>
+          <tr><td>day</td></tr>
+          <tr><td>degree</td></tr>
+          <tr><td>fahrenheit</td></tr>
+          <tr><td>fluid-ounce</td></tr>
+          <tr><td>foot</td></tr>
+          <tr><td>gallon</td></tr>
+          <tr><td>gigabit</td></tr>
+          <tr><td>gigabyte</td></tr>
+          <tr><td>gram</td></tr>
+          <tr><td>hectare</td></tr>
+          <tr><td>hour</td></tr>
+          <tr><td>inch</td></tr>
+          <tr><td>kilobit</td></tr>
+          <tr><td>kilobyte</td></tr>
+          <tr><td>kilogram</td></tr>
+          <tr><td>kilometer</td></tr>
+          <tr><td>liter</td></tr>
+          <tr><td>megabit</td></tr>
+          <tr><td>megabyte</td></tr>
+          <tr><td>meter</td></tr>
+          <tr><td>mile</td></tr>
+          <tr><td>mile-scandinavian</td></tr>
+          <tr><td>millimeter</td></tr>
+          <tr><td>milliliter</td></tr>
+          <tr><td>millisecond</td></tr>
+          <tr><td>minute</td></tr>
+          <tr><td>month</td></tr>
+          <tr><td>ounce</td></tr>
+          <tr><td>percent</td></tr>
+          <tr><td>petabyte</td></tr>
+          <tr><td>pound</td></tr>
+          <tr><td>second</td></tr>
+          <tr><td>stone</td></tr>
+          <tr><td>terabit</td></tr>
+          <tr><td>terabyte</td></tr>
+          <tr><td>week</td></tr>
+          <tr><td>yard</td></tr>
+          <tr><td>year</td></tr>
+        </table>
+      </emu-table>
+    </emu-clause>
+  </emu-clause>
+  </ins>
+
+</emu-clause>
diff --git a/section6/locales-currencies-tz_diff_out.html b/section6/locales-currencies-tz_diff_out.html
new file mode 100644
index 0000000..e9cfae1
--- /dev/null
+++ b/section6/locales-currencies-tz_diff_out.html
@@ -0,0 +1,2072 @@
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+  if (this._closeAfterSearch) {
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+  this.setActiveClause(findActiveClause(this.$specContainer))
+}
+
+Menu.prototype.setActiveClause = function (clause) {
+  this.$activeClause = clause;
+  this.revealInToc(this.$activeClause);
+}
+
+Menu.prototype.revealInToc = function (path) {
+  var current = this.$toc.querySelectorAll('li.revealed');
+  for (var i = 0; i < current.length; i++) {
+    current[i].classList.remove('revealed');
+    current[i].classList.remove('revealed-leaf');
+  }
+  
+  var current = this.$toc;
+  var index = 0;
+  while (index < path.length) {
+    var children = current.children;
+    for (var i = 0; i < children.length; i++) {
+      if ('#' + path[index].id === children[i].children[1].getAttribute('href') ) {
+        children[i].classList.add('revealed');
+        if (index === path.length - 1) {
+          children[i].classList.add('revealed-leaf');
+          var rect = children[i].getBoundingClientRect();
+          this.$toc.getBoundingClientRect().top
+          var tocRect = this.$toc.getBoundingClientRect();
+          if (rect.top + 10 > tocRect.bottom) {
+            this.$toc.scrollTop = this.$toc.scrollTop + (rect.top - tocRect.bottom) + (rect.bottom - rect.top);
+          } else if (rect.top < tocRect.top) {
+            this.$toc.scrollTop = this.$toc.scrollTop - (tocRect.top - rect.top);
+          }
+        }
+        current = children[i].querySelector('ol');
+        index++;
+        break;
+      }      
+    }
+    
+  }
+}
+
+function findActiveClause(root, path) {
+  var clauses = new ClauseWalker(root);
+  var $clause;
+  var found = false;
+  var path = path || [];
+  
+  while ($clause = clauses.nextNode()) {
+    var rect = $clause.getBoundingClientRect();
+    var $header = $clause.children[0];
+    var marginTop = parseInt(getComputedStyle($header)["margin-top"]);
+    
+    if ((rect.top - marginTop) <= 0 && rect.bottom > 0) {
+      found = true;
+      return findActiveClause($clause, path.concat($clause)) || path;
+    }
+  }
+  
+  return path;
+}
+
+function ClauseWalker(root) {
+  var previous;
+  var treeWalker = document.createTreeWalker(
+    root,
+    NodeFilter.SHOW_ELEMENT,
+    {
+      acceptNode: function (node) {
+        if (previous === node.parentNode) {
+          return NodeFilter.FILTER_REJECT;
+        } else {
+          previous = node;
+        }
+        if (node.nodeName === 'EMU-CLAUSE' || node.nodeName === 'EMU-INTRO' || node.nodeName === 'EMU-ANNEX') {
+          return NodeFilter.FILTER_ACCEPT;
+        } else {
+          return NodeFilter.FILTER_SKIP;
+        }
+      }
+    },
+    false
+    );
+  
+  return treeWalker;
+}
+
+Menu.prototype.toggle = function () {
+  this.$menu.classList.toggle('active');
+}
+
+Menu.prototype.show = function () {
+  this.$menu.classList.add('active');
+}
+
+Menu.prototype.hide = function () {
+  this.$menu.classList.remove('active');
+}
+
+Menu.prototype.isVisible = function() {
+  return this.$menu.classList.contains('active');
+}
+
+Menu.prototype.showPins = function () {
+  this.$pins.classList.add('active');
+}
+
+Menu.prototype.hidePins = function () {
+  this.$pins.classList.remove('active');
+}
+
+Menu.prototype.addPinEntry = function (id) {
+  var entry = this.search.biblio.byId[id];
+  if (!entry) {
+    // id was deleted after pin (or something) so remove it
+    delete this._pinnedIds[id];
+    this.persistPinEntries();
+    return;
+  }
+
+  if (entry.type === 'clause') {
+    var prefix;
+    if (entry.number) {
+      prefix = entry.number + ' ';
+    } else {
+      prefix = '';
+    }
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + prefix + entry.titleHTML + '</a></li>';
+  } else {
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + entry.key + '</a></li>';
+  }
+
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.showPins();
+  }
+  this._pinnedIds[id] = true;
+  this.persistPinEntries();
+}
+
+Menu.prototype.removePinEntry = function (id) {
+  var item = this.$pinList.querySelector('a[href="#' + id + '"]').parentNode;
+  this.$pinList.removeChild(item);
+  delete this._pinnedIds[id];
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.hidePins();
+  }
+
+  this.persistPinEntries();
+}
+
+Menu.prototype.persistPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+
+  localStorage.pinEntries = JSON.stringify(Object.keys(this._pinnedIds));
+}
+
+Menu.prototype.loadPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+  
+  var pinsString = window.localStorage.pinEntries;
+  if (!pinsString) return;
+  var pins = JSON.parse(pinsString);
+  for(var i = 0; i < pins.length; i++) {
+    this.addPinEntry(pins[i]);
+  }
+}
+
+Menu.prototype.togglePinEntry = function (id) {
+  if (!id) {
+    id = this.$activeClause[this.$activeClause.length - 1].id;
+  }
+
+  if (this._pinnedIds[id]) {
+    this.removePinEntry(id);
+  } else {
+    this.addPinEntry(id);
+  }
+}
+
+Menu.prototype.selectPin = function (num) {
+  document.location = this.$pinList.children[num].children[0].href;
+}
+
+var menu;
+function init() {
+  menu = new Menu();
+  var $container = document.getElementById('spec-container');
+  $container.addEventListener('mouseover', debounce(function (e) {
+    Toolbox.activateIfMouseOver(e);
+  }));
+}
+
+document.addEventListener('DOMContentLoaded', init);
+
+function debounce(fn, opts) {
+  opts = opts || {};
+  var timeout;
+  return function(e) {
+    if (opts.stopPropagation) {
+      e.stopPropagation();
+    }
+    var args = arguments;
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+    timeout = setTimeout(function() {
+      timeout = null;
+      fn.apply(this, args);
+    }.bind(this), 150);
+  }
+}
+
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+
+
+
+
+// The following license applies to the fuzzysearch function
+// The MIT License (MIT)
+// Copyright © 2015 Nicolas Bevacqua
+// Copyright © 2016 Brian Terlson
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+function fuzzysearch (searchString, haystack, caseInsensitive) {
+  var tlen = haystack.length;
+  var qlen = searchString.length;
+  var chunks = 1;
+  var finding = false;
+  var prefix = true;
+  
+  if (qlen > tlen) {
+    return false;
+  }
+  
+  if (qlen === tlen) {
+    if (searchString === haystack) {
+      return { caseMatch: true, chunks: 1, prefix: true };
+    } else if (searchString.toLowerCase() === haystack.toLowerCase()) {
+      return { caseMatch: false, chunks: 1, prefix: true };
+    } else {
+      return false;
+    }
+  }
+  
+  outer: for (var i = 0, j = 0; i < qlen; i++) {
+    var nch = searchString[i];
+    while (j < tlen) {
+      var targetChar = haystack[j++];
+      if (targetChar === nch) {
+        finding = true;
+        continue outer;
+      }
+      if (finding) {
+        chunks++;
+        finding = false;
+      }
+    }
+    
+    if (caseInsensitive) { return false }
+    
+    return fuzzysearch(searchString.toLowerCase(), haystack.toLowerCase(), true);
+  }
+  
+  return { caseMatch: !caseInsensitive, chunks: chunks, prefix: j <= qlen };
+}
+
+var Toolbox = {
+  init: function () {
+    this.$container = document.createElement('div');
+    this.$container.classList.add('toolbox');
+    this.$permalink = document.createElement('a');
+    this.$permalink.textContent = 'Permalink';
+    this.$pinLink = document.createElement('a');
+    this.$pinLink.textContent = 'Pin';
+    this.$pinLink.setAttribute('href', '#');
+    this.$pinLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      menu.togglePinEntry(this.entry.id);
+    }.bind(this));
+
+    this.$refsLink = document.createElement('a');
+    this.$refsLink.setAttribute('href', '#');
+    this.$refsLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      referencePane.showReferencesFor(this.entry);
+    }.bind(this));
+    this.$container.appendChild(this.$permalink);
+    this.$container.appendChild(this.$pinLink);
+    this.$container.appendChild(this.$refsLink);
+    document.body.appendChild(this.$container);
+  },
+
+  activate: function (el, entry, target) {
+    if (el === this._activeEl) return;
+    this.active = true;
+    this.entry = entry;
+    this.$container.classList.add('active');
+    this.top = el.offsetTop - this.$container.offsetHeight - 10;
+    this.left = el.offsetLeft;
+    this.$container.setAttribute('style', 'left: ' + this.left + 'px; top: ' + this.top + 'px');
+    this.updatePermalink();
+    this.updateReferences();
+    this._activeEl = el;
+    if (this.top < document.body.scrollTop && el === target) {
+      // don't scroll unless it's a small thing (< 200px)
+      this.$container.scrollIntoView();
+    }
+  },
+
+  updatePermalink: function () {
+    this.$permalink.setAttribute('href', '#' + this.entry.id);
+  },
+
+  updateReferences: function () {
+    this.$refsLink.textContent = 'References (' + this.entry.referencingIds.length + ')';
+  },
+
+  activateIfMouseOver: function (e) {
+    var ref = this.findReferenceUnder(e.target);
+    if (ref && (!this.active || e.pageY > this._activeEl.offsetTop)) {
+      var entry = menu.search.biblio.byId[ref.id];
+      this.activate(ref.element, entry, e.target);
+    } else if (this.active && ((e.pageY < this.top) || e.pageY > (this._activeEl.offsetTop + this._activeEl.offsetHeight))) {
+      this.deactivate();
+    }
+  },
+
+  findReferenceUnder: function (el) {
+    while (el) {
+      var parent = el.parentNode;
+      if (el.nodeName === 'H1' && parent.nodeName.match(/EMU-CLAUSE|EMU-ANNEX|EMU-INTRO/) && parent.id) {
+        return { element: el, id: parent.id };
+      } else if (el.nodeName.match(/EMU-(?!CLAUSE|XREF|ANNEX|INTRO)|DFN/) &&
+                el.id && el.id[0] !== '_') {
+        if (el.nodeName === 'EMU-FIGURE' || el.nodeName === 'EMU-TABLE' || el.nodeName === 'EMU-EXAMPLE') {
+          // return the figcaption element
+          return { element: el.children[0].children[0], id: el.id };
+        } else if (el.nodeName === 'EMU-PRODUCTION') {
+          // return the LHS non-terminal element
+          return { element: el.children[0], id: el.id };
+        } else {
+          return { element: el, id: el.id };
+        }
+      }
+      el = parent;
+    }
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+    this._activeEl = null;
+    this.activeElBounds = null;
+    this.active = false;
+  }
+}
+
+var referencePane = {
+  init: function() {
+    this.$container = document.createElement('div');
+    this.$container.setAttribute('id', 'references-pane-container');
+
+    var $spacer = document.createElement('div');
+    $spacer.setAttribute('id', 'references-pane-spacer');
+
+    this.$pane = document.createElement('div');
+    this.$pane.setAttribute('id', 'references-pane');
+
+    this.$container.appendChild($spacer);
+    this.$container.appendChild(this.$pane);
+
+    this.$header = document.createElement('div');
+    this.$header.classList.add('menu-pane-header');
+    this.$header.textContent = 'References to ';
+    this.$headerRefId = document.createElement('a');
+    this.$header.appendChild(this.$headerRefId);
+    this.$closeButton = document.createElement('span');
+    this.$closeButton.setAttribute('id', 'references-pane-close');
+    this.$closeButton.addEventListener('click', function (e) {
+      this.deactivate();
+    }.bind(this));
+    this.$header.appendChild(this.$closeButton);
+
+    this.$pane.appendChild(this.$header);
+    var tableContainer = document.createElement('div');
+    tableContainer.setAttribute('id', 'references-pane-table-container');
+
+    this.$table = document.createElement('table');
+    this.$table.setAttribute('id', 'references-pane-table');
+
+    this.$tableBody = this.$table.createTBody();
+
+    tableContainer.appendChild(this.$table);
+    this.$pane.appendChild(tableContainer);
+
+    menu.$specContainer.appendChild(this.$container);
+  },
+
+  activate: function () {
+    this.$container.classList.add('active');
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+  },
+
+  showReferencesFor(entry) {
+    this.activate();
+    var newBody = document.createElement('tbody');
+    var previousId;
+    var previousCell;
+    var dupCount = 0;
+    this.$headerRefId.textContent = '#' + entry.id;
+    this.$headerRefId.setAttribute('href', '#' + entry.id);
+    entry.referencingIds.map(function (id) {
+      var target = document.getElementById(id);
+      var cid = findParentClauseId(target);
+      var clause = menu.search.biblio.byId[cid];
+      var dupCount = 0;
+      return { id: id, clause: clause }
+    }).sort(function (a, b) {
+      return sortByClauseNumber(a.clause, b.clause);
+    }).forEach(function (record, i) {
+      if (previousId === record.clause.id) {
+        previousCell.innerHTML += ' (<a href="#' + record.id + '">' + (dupCount + 2) + '</a>)';
+        dupCount++;
+      } else {
+        var row = newBody.insertRow();
+        var cell = row.insertCell();
+        cell.innerHTML = record.clause.number;
+        cell = row.insertCell();
+        cell.innerHTML = '<a href="#' + record.id + '">' + record.clause.titleHTML + '</a>';
+        previousCell = cell;
+        previousId = record.clause.id;
+        dupCount = 0;
+      }
+    }, this);
+    this.$table.removeChild(this.$tableBody);
+    this.$tableBody = newBody;
+    this.$table.appendChild(this.$tableBody);
+  }
+}
+function findParentClauseId(node) {
+  while (node && node.nodeName !== 'EMU-CLAUSE' && node.nodeName !== 'EMU-INTRO' && node.nodeName !== 'EMU-ANNEX') {
+    node = node.parentNode;
+  }
+  if (!node) return null;
+  return node.getAttribute('id');
+}
+
+function sortByClauseNumber(c1, c2) {
+  var c1c = c1.number.split('.');
+  var c2c = c2.number.split('.');
+
+  for (var i = 0; i < c1c.length; i++) {
+    if (i >= c2c.length) {
+      return 1;
+    }
+    
+    var c1 = c1c[i];
+    var c2 = c2c[i];
+    var c1cn = Number(c1);
+    var c2cn = Number(c2);
+
+    if (Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      if (c1 > c2) {
+        return 1;
+      } else if (c1 < c2) {
+        return -1;
+      }
+    } else if (!Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      return -1;
+    } else if (Number.isNaN(c1cn) && !Number.isNaN(c2cn)) {
+      return 1;
+    } else if(c1cn > c2cn) {
+      return 1;
+    } else if (c1cn < c2cn) {
+      return -1;
+    }
+  }
+
+  if (c1c.length === c2c.length) {
+    return 0;
+  }
+  return -1;
+}
+
+document.addEventListener('DOMContentLoaded', function () {
+  Toolbox.init();
+  referencePane.init();
+})
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+</script><style>body {
+  display: flex;
+  font-size: 18px;
+  line-height: 1.5;
+  font-family: Cambria, Palatino Linotype, Palatino, Liberation Serif, serif;
+  padding: 0;
+  margin: 0;
+  color: #111;
+}
+
+#spec-container {
+  padding: 0 20px;
+  flex-grow: 1;
+  flex-basis: 66%;
+  box-sizing: border-box;
+  overflow: hidden;
+}
+
+body.oldtoc {
+  margin: 0 auto;
+}
+
+a {
+    text-decoration: none;
+    color: #206ca7;
+}
+
+a:visited {
+  color: #206ca7;
+}
+
+a:hover {
+    text-decoration: underline;
+    color: #239dee;
+}
+
+
+code {
+    font-weight: bold;
+    font-family: Consolas, Monaco, monospace;
+    white-space: pre;
+}
+
+pre code {
+  font-weight: inherit;
+}
+
+pre code.hljs {
+  background-color: #fff;
+  margin: 0;
+  padding: 0;
+}
+
+ol.toc {
+    list-style: none;
+    padding-left: 0;
+}
+
+ol.toc ol.toc {
+    padding-left: 2ex;
+    list-style: none;
+}
+
+var {
+  color: #2aa198;
+  transition: background-color 0.25s ease;
+  cursor: pointer;
+}
+
+var.referenced {
+  background-color: #ffff33;
+}
+
+emu-const {
+  font-family: sans-serif;
+}
+
+emu-val {
+  font-weight: bold;
+}
+emu-alg ol, emu-alg ol ol ol ol {
+    list-style-type: decimal;
+}
+
+emu-alg ol ol, emu-alg ol ol ol ol ol {
+    list-style-type: lower-alpha;
+}
+
+emu-alg ol ol ol, ol ol ol ol ol ol {
+    list-style-type: lower-roman;
+}
+
+emu-eqn {
+  display: block;
+  margin-left: 4em;
+}
+
+emu-eqn.inline {
+  display: inline;
+  margin: 0;
+}
+
+emu-eqn div:first-child {
+  margin-left: -2em;
+}
+
+emu-note {
+    margin: 1em 0;
+    color: #666;
+    border-left: 5px solid #ccc;
+    display: flex;
+    flex-direction: row;
+}
+
+emu-note > span.note {
+    flex-basis: 100px;
+    min-width: 100px;
+    flex-grow: 0;
+    flex-shrink: 1;
+    text-transform: uppercase;
+    padding-left: 5px;
+}
+
+emu-note[type=editor] {
+  border-left-color: #faa;
+}
+
+emu-note > div.note-contents {
+  flex-grow: 1;
+  flex-shrink: 1;
+}
+
+emu-note > div.note-contents > p:first-of-type {
+  margin-top: 0;
+}
+
+emu-note > div.note-contents > p:last-of-type {
+  margin-bottom: 0;
+}
+
+emu-figure {
+  display: block;
+}
+
+emu-example {
+  display: block;
+  margin: 1em 3em;
+}
+
+emu-example figure figcaption {
+  margin-top: 0.5em;
+  text-align: left;
+}
+
+emu-figure figure,
+emu-example figure,
+emu-table figure {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+emu-production {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 1em;
+    margin-left: 5ex;
+}
+
+emu-grammar.inline, emu-production.inline,
+emu-grammar.inline emu-production emu-rhs, emu-production.inline emu-rhs,
+emu-grammar[collapsed] emu-production emu-rhs, emu-production[collapsed] emu-rhs {
+    display: inline;
+    padding-left: 1ex;
+    margin-left: 0;
+}
+
+emu-grammar[collapsed] emu-production, emu-production[collapsed] {
+    margin: 0;
+}
+
+emu-constraints {
+    font-size: .75em;
+    margin-right: 1ex;
+}
+
+emu-gann {
+    margin-right: 1ex;
+}
+
+emu-gann emu-t:last-child,
+emu-gann emu-nt:last-child {
+    margin-right: 0;
+}
+
+emu-geq {
+    margin-left: 1ex;
+    font-weight: bold;
+}
+
+emu-oneof {
+    font-weight: bold;
+    margin-left: 1ex;
+}
+
+emu-nt {
+    display: inline-block;
+    font-style: italic;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-nt a, emu-nt a:visited {
+  color: #333;
+}
+
+emu-rhs emu-nt {
+    margin-right: 1ex;
+}
+
+emu-t {
+    display: inline-block;
+    font-family: monospace;
+    font-weight: bold;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-production emu-t {
+    margin-right: 1ex;
+}
+
+emu-rhs {
+    display: block;
+    padding-left: 75px;
+    text-indent: -25px;
+}
+
+emu-mods {
+    font-size: .85em;
+    vertical-align: sub;
+    font-style: normal;
+    font-weight: normal;
+}
+
+emu-production[collapsed] emu-mods {
+  display: none;
+}
+
+emu-params, emu-opt {
+  margin-right: 1ex;
+  font-family: monospace;
+}
+
+emu-params, emu-constraints {
+  color: #2aa198;
+}
+
+emu-opt {
+  color: #b58900;
+}
+
+emu-gprose {
+    font-size: 0.9em;
+    font-family: Helvetica, Arial, sans-serif;
+}
+
+h1.shortname {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.version {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.title {
+  margin-top: 0;
+  color: #f60;
+}
+
+h1.first {
+  margin-top: 0;
+}
+
+h1, h2, h3, h4, h5, h6 {
+    position: relative;
+}
+
+h1 .secnum {
+  text-decoration: none;
+  margin-right: 10px;
+}
+
+h1 span.title {
+  order: 2;
+}
+
+
+h1 { font-size: 2.67em; margin-top: 2em; margin-bottom: 0; line-height: 1em;}
+h2 { font-size: 2em; }
+h3 { font-size: 1.56em; }
+h4 { font-size: 1.25em; }
+h5 { font-size: 1.11em; }
+h6 { font-size: 1em; }
+
+h1:hover span.utils {
+  display: block;
+}
+
+span.utils {
+  font-size: 18px;
+  line-height: 18px;
+  display: none;
+  position: absolute;
+  top: 100%;
+  left: 0;
+  right: 0;
+  font-weight: normal;
+}
+
+span.utils:before {
+    content: "⤷";
+    display: inline-block;
+    padding: 0 5px;
+}
+
+span.utils > * {
+  display: inline-block;
+  margin-right: 20px;
+}
+
+h1 span.utils span.anchor a,
+h2 span.utils span.anchor a,
+h3 span.utils span.anchor a,
+h4 span.utils span.anchor a,
+h5 span.utils span.anchor a,
+h6 span.utils span.anchor a {
+  text-decoration: none;
+  font-variant: small-caps;
+}
+
+h1 span.utils span.anchor a:hover,
+h2 span.utils span.anchor a:hover,
+h3 span.utils span.anchor a:hover,
+h4 span.utils span.anchor a:hover,
+h5 span.utils span.anchor a:hover,
+h6 span.utils span.anchor a:hover {
+  color: #333;
+}
+
+emu-intro h1, emu-clause h1, emu-annex h1 { font-size: 2em; }
+emu-intro h2, emu-clause h2, emu-annex h2 { font-size: 1.56em; }
+emu-intro h3, emu-clause h3, emu-annex h3 { font-size: 1.25em; }
+emu-intro h4, emu-clause h4, emu-annex h4 { font-size: 1.11em; }
+emu-intro h5, emu-clause h5, emu-annex h5 { font-size: 1em; }
+emu-intro h6, emu-clause h6, emu-annex h6 { font-size: 0.9em; }
+emu-intro emu-intro h1, emu-clause emu-clause h1, emu-annex emu-annex h1 { font-size: 1.56em; }
+emu-intro emu-intro h2, emu-clause emu-clause h2, emu-annex emu-annex h2 { font-size: 1.25em; }
+emu-intro emu-intro h3, emu-clause emu-clause h3, emu-annex emu-annex h3 { font-size: 1.11em; }
+emu-intro emu-intro h4, emu-clause emu-clause h4, emu-annex emu-annex h4 { font-size: 1em; }
+emu-intro emu-intro h5, emu-clause emu-clause h5, emu-annex emu-annex h5 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex h1 { font-size: 1.25em; }
+emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex h2 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex h3 { font-size: 1em; }
+emu-intro emu-intro emu-intro h4, emu-clause emu-clause emu-clause h4, emu-annex emu-annex emu-annex h4 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex h2 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex emu-annex h3 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex emu-annex h2 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 0.9em }
+
+emu-clause, emu-intro, emu-annex {
+    display: block;
+}
+
+/* Figures and tables */
+figure { display: block; margin: 1em 0 3em 0; }
+figure object { display: block; margin: 0 auto; }
+figure table.real-table { margin: 0 auto; }
+figure figcaption {
+    display: block;
+    color: #555555;
+    font-weight: bold;
+    text-align: center;
+}
+
+emu-table table {
+  margin: 0 auto;
+}
+
+emu-table table, table.real-table {
+    border-collapse: collapse;
+}
+
+emu-table td, emu-table th, table.real-table td, table.real-table th {
+    border: 1px solid black;
+    padding: 0.4em;
+    vertical-align: baseline;
+}
+emu-table th, emu-table thead td, table.real-table th {
+    background-color: #eeeeee;
+}
+
+/* Note: the left content edges of table.lightweight-table >tbody >tr >td
+   and div.display line up. */
+table.lightweight-table {
+    border-collapse: collapse;
+    margin: 0 0 0 1.5em;
+}
+table.lightweight-table td, table.lightweight-table th {
+    border: none;
+    padding: 0 0.5em;
+    vertical-align: baseline;
+}
+
+/* diff styles */
+ins {
+    background-color: #e0f8e0;
+    text-decoration: none;
+    border-bottom: 1px solid #396;
+}
+
+del {
+    background-color: #fee;
+}
+
+ins.block, del.block,
+emu-production > ins, emu-production > del,
+emu-grammar > ins, emu-grammar > del {
+  display: block;
+}
+emu-rhs > ins, emu-rhs > del { 
+  display: inline;
+}
+
+tr.ins > td > ins {
+  border-bottom: none;
+}
+
+tr.ins > td {
+  background-color: #e0f8e0;
+}
+
+tr.del > td {
+  background-color: #fee;
+}
+
+/* Menu Styles */
+#menu-toggle {
+  font-size: 2em;
+
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 1.5em;
+  height: 1.5em;
+  z-index: 3;
+  visibility: hidden;
+  color: #1567a2;
+  background-color: #fff;
+
+  line-height: 1.5em;
+  text-align: center;
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu {
+  display: flex;
+  flex-direction: column;
+  width: 33%; height: 100vh;
+  max-width: 500px;
+  box-sizing: border-box;
+  background-color: #ddd;
+  overflow: hidden;
+  transition: opacity 0.1s linear;
+  padding: 0 5px;
+  position: fixed;
+  left: 0; top: 0;
+  border-right: 2px solid #bbb;
+
+  z-index: 2;
+}
+
+#menu-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+  flex-grow: 0;
+  flex-shrink: 0;
+}
+
+#menu a {
+  color: #1567a2;
+}
+
+#menu.active {
+  display: flex;
+  opacity: 1;
+  z-index: 2;
+}
+
+#menu-pins {
+  flex-grow: 1;
+  display: none;
+}
+
+#menu-pins.active {
+  display: block;
+}
+
+#menu-pins-list {
+  margin: 0;
+  padding: 0;
+  counter-reset: pins-counter;
+}
+
+#menu-pins-list > li:before {
+  content: counter(pins-counter);
+  counter-increment: pins-counter;
+  display: inline-block;
+  width: 25px;
+  text-align: center;
+  border: 1px solid #bbb;
+  padding: 2px;
+  margin: 4px;
+  box-sizing: border-box;
+  line-height: 1em;
+  background-color: #ccc;
+  border-radius: 4px;
+}
+#menu-toc > ol {
+  padding: 0;
+  flex-grow: 1;
+}
+
+#menu-toc > ol li {
+  padding: 0;
+}
+
+#menu-toc > ol , #menu-toc > ol ol {
+  list-style-type: none;
+  margin: 0;
+  padding: 0;
+}
+
+#menu-toc > ol ol {
+  padding-left: 0.75em;
+}
+
+#menu-toc li {
+  text-overflow: ellipsis;
+  overflow: hidden;
+  white-space: nowrap;
+}
+
+#menu-toc .item-toggle {
+  display: inline-block;
+  transform: rotate(-45deg) translate(-5px, -5px);
+  transition: transform 0.1s ease;
+  text-align: center;
+  width: 20px;
+
+  color: #aab;
+
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu-toc .item-toggle-none {
+  display: inline-block;
+  width: 20px;
+}
+
+#menu-toc li.active > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li > ol {
+  display: none;
+}
+
+#menu-toc li.active > ol {
+  display: block;
+}
+
+#menu-toc li.revealed > a {
+  background-color: #bbb;
+  font-weight: bold;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed-leaf> a {
+  color: #206ca7;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li.revealed > ol {
+  display: block;
+}
+
+#menu-toc li > a {
+  padding: 2px 5px;
+}
+
+#menu > * {
+  margin-bottom: 5px;
+}
+
+.menu-pane-header {
+  padding: 0 5px;
+  text-transform: uppercase;
+  background-color: #aaa;
+  color: #335;
+  font-weight: bold;
+  letter-spacing: 2px;
+  flex-grow: 0;
+  flex-shrink: 0;
+  font-size: 0.8em;
+}
+
+#menu-toc {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  overflow: hidden;
+  flex-grow: 1;
+}
+
+#menu-toc ol.toc {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#menu-search {
+  position: relative;
+  flex-grow: 0;
+  flex-shrink: 0;
+  width: 100%;
+  
+  display: flex;
+  flex-direction: column;
+  
+  max-height: 300px;
+}
+
+#menu-trace-list {
+  display: none;
+}
+
+#menu-search-box {
+  box-sizing: border-box;
+  display: block;
+  width: 100%;
+  margin: 5px 0 0 0;
+  font-size: 1em;
+  padding: 2px;
+  background-color: #bbb;
+  border: 1px solid #999;
+}
+
+#menu-search-results {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+li.menu-search-result-clause:before {
+    content: 'clause';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+li.menu-search-result-op:before {
+    content: 'op';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+
+li.menu-search-result-prod:before {
+    content: 'prod';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+
+li.menu-search-result-term:before {
+    content: 'term';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+#menu-search-results ul {
+  padding: 0 5px;
+  margin: 0;
+}
+
+#menu-search-results li {
+  white-space: nowrap;
+  text-overflow: ellipsis;
+}
+
+
+#menu-trace-list {
+  counter-reset: item;
+  margin: 0 0 0 20px;
+  padding: 0;
+}
+#menu-trace-list li {
+  display: block;
+  white-space: nowrap;
+}
+
+#menu-trace-list li .secnum:after {
+  content: " ";
+}
+#menu-trace-list li:before {
+    content: counter(item) " ";
+    background-color: #222;
+    counter-increment: item;
+    color: #999;
+    width: 20px;
+    height: 20px;
+    line-height: 20px;
+    display: inline-block;
+    text-align: center;
+    margin: 2px 4px 2px 0;
+}
+
+@media (max-width: 1000px) {
+  body {
+    margin: 0;
+    display: block;
+  }
+
+  #menu {
+    display: none;
+    padding-top: 3em;
+    width: 450px;
+  }
+
+  #menu.active {
+    position: fixed;
+    height: 100%;
+    left: 0;
+    top: 0;
+    right: 300px;
+  }
+
+  #menu-toggle {
+    visibility: visible;
+  }
+
+  #spec-container {
+    padding: 0 5px;
+  }
+
+  #references-pane-spacer {
+    display: none;
+  }
+}
+
+@media only screen and (max-width: 800px) {
+  #menu {
+    width: 100%;
+  }
+
+  h1 .secnum:empty {
+    margin: 0; padding: 0;
+  }
+}
+
+
+/* Toolbox */
+.toolbox {
+	position: absolute;
+	background: #ddd;
+	border: 1px solid #aaa;
+  display: none;
+  color: #eee;
+  padding: 5px;
+  border-radius: 3px;
+}
+
+.toolbox.active {
+  display: inline-block;
+}
+
+.toolbox a {
+  text-decoration: none;
+  padding: 0 5px;
+}
+
+.toolbox a:hover {
+  text-decoration: underline;
+}
+
+.toolbox:after, .toolbox:before {
+	top: 100%;
+	left: 15px;
+	border: solid transparent;
+	content: " ";
+	height: 0;
+	width: 0;
+	position: absolute;
+	pointer-events: none;
+}
+
+.toolbox:after {
+	border-color: rgba(0, 0, 0, 0);
+	border-top-color: #ddd;
+	border-width: 10px;
+	margin-left: -10px;
+}
+.toolbox:before {
+	border-color: rgba(204, 204, 204, 0);
+	border-top-color: #aaa;
+	border-width: 12px;
+	margin-left: -12px;
+}
+
+#references-pane-container {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: 250px;
+  display: none;
+  background-color: #ddd;
+  z-index: 1;
+}
+
+#references-pane-table-container {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#references-pane-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+}
+
+#references-pane {
+  flex-grow: 1;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+#references-pane-container.active {
+  display: flex;
+}
+
+#references-pane-close:after {
+  content: '✖';
+  float: right;
+  cursor: pointer;
+}
+
+#references-pane table tr td:first-child {
+  text-align: right;
+  padding-right: 5px;
+}
+
+@media print {
+  #menu-toggle {
+    display: none; 
+  }
+}
+</style></head><body><div id="menu-toggle">☰</div><div id="menu-spacer"></div><div id="menu"><div id="menu-search"><input type="text" id="menu-search-box" placeholder="Search..."><div id="menu-search-results" class="inactive"></div></div><div id="menu-pins"><div class="menu-pane-header">Pins</div><ul id="menu-pins-list"></ul></div><div class="menu-pane-header">Table of Contents</div><div id="menu-toc"><ol class="toc"><li><span class="item-toggle">◢</span><a href="#locales-currencies-tz" title="Identification of Locales, Currencies,  and Time Zones, and Measurement Units"><span class="secnum">1</span> Identification of Locales, Currencies,  <del>and</del> Time Zones<ins>, and Measurement Units</ins></a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-case-sensitivity-and-case-mapping" title="Case Sensitivity and Case Mapping"><span class="secnum">1.1</span> Case Sensitivity and Case Mapping</a></li><li><span class="item-toggle">◢</span><a href="#sec-language-tags" title="Language Tags"><span class="secnum">1.2</span> Language Tags</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-unicode-locale-extension-sequences" title="Unicode Locale Extension Sequences"><span class="secnum">1.2.1</span> Unicode Locale Extension Sequences</a></li><li><span class="item-toggle-none"></span><a href="#sec-isstructurallyvalidlanguagetag" title="IsStructurallyValidLanguageTag ( locale )"><span class="secnum">1.2.2</span> IsStructurallyValidLanguageTag ( <var>locale</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-canonicalizelanguagetag" title="CanonicalizeLanguageTag ( locale )"><span class="secnum">1.2.3</span> CanonicalizeLanguageTag ( <var>locale</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-defaultlocale" title="DefaultLocale ()"><span class="secnum">1.2.4</span> DefaultLocale ()</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-currency-codes" title="Currency Codes"><span class="secnum">1.3</span> Currency Codes</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-iswellformedcurrencycode" title="IsWellFormedCurrencyCode ( currency )"><span class="secnum">1.3.1</span> IsWellFormedCurrencyCode ( <var>currency</var> )</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-time-zone-names" title="Time Zone Names"><span class="secnum">1.4</span> Time Zone Names</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-isvalidtimezonename" title="IsValidTimeZoneName ( timeZone )"><span class="secnum">1.4.1</span> IsValidTimeZoneName ( <var>timeZone</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-canonicalizetimezonename" title="CanonicalizeTimeZoneName"><span class="secnum">1.4.2</span> CanonicalizeTimeZoneName</a></li><li><span class="item-toggle-none"></span><a href="#sec-defaulttimezone" title="DefaultTimeZone ()"><span class="secnum">1.4.3</span> DefaultTimeZone ()</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-measurement-unit-identifiers" title="Measurement Unit Identifiers"><span class="secnum">1.5</span> Measurement Unit Identifiers</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-iswellformedunitidentifier" title="IsWellFormedUnitIdentifier ( unitIdentifier )"><span class="secnum">1.5.1</span> IsWellFormedUnitIdentifier ( <var>unitIdentifier</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-issanctionedsimpleunitidentifier" title="IsSanctionedSimpleUnitIdentifier ( unitIdentifier )"><span class="secnum">1.5.2</span> IsSanctionedSimpleUnitIdentifier ( <var>unitIdentifier</var> )</a></li></ol></li></ol></li></ol></div></div><div id="spec-container"><emu-clause id="locales-currencies-tz">
+  <h1 class="first"><span class="secnum">1</span>Identification of Locales, Currencies,  <del>and</del> Time Zones<ins>, and Measurement Units</ins></h1>
+
+  <p>
+    This clause describes the String values used in the ECMAScript 2019 Internationalization API Specification to identify locales, currencies, time zones, and measurement units.
+  
+  </p>
+
+  <emu-clause id="sec-case-sensitivity-and-case-mapping">
+    <h1><span class="secnum">1.1</span>Case Sensitivity and Case Mapping</h1>
+
+    <p>
+      The String values used to identify locales, currencies, and time zones are interpreted in a case-insensitive manner, treating the Unicode Basic Latin characters <code>"A"</code> to <code>"Z"</code> (U+0041 to U+005A) as equivalent to the corresponding Basic Latin characters <code>"a"</code> to <code>"z"</code> (U+0061 to U+007A). No other case folding equivalences are applied. When mapping to upper case, a mapping shall be used that maps characters in the range <code>"a"</code> to <code>"z"</code> (U+0061 to U+007A) to the corresponding characters in the range <code>"A"</code> to <code>"Z"</code> (U+0041 to U+005A) and maps no other characters to the latter range.
+    
+    </p>
+
+    <p>
+      EXAMPLES <code>"ß"</code> (U+00DF) must not match or be mapped to <code>"SS"</code> (U+0053, U+0053). <code>"ı"</code> (U+0131) must not match or be mapped to <code>"I"</code> (U+0049).
+    
+    </p>
+  </emu-clause>
+
+  <emu-clause id="sec-language-tags">
+    <h1><span class="secnum">1.2</span>Language Tags</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies locales using language tags as defined by IETF BCP 47 (RFCs 5646 and 4647 or their successors), which may include extensions such as those registered through RFC 6067. Their canonical form is specified in RFC 5646 section 4.5 or its successor.
+    
+    </p>
+
+    <p>
+      BCP 47 language tags that meet those validity criteria of RFC 5646 section 2.2.9 that can be verified without reference to the IANA Language Subtag Registry are considered structurally valid. All structurally valid language tags are valid for use with the APIs defined by this standard. However, the set of locales and thus language tags that an implementation supports with adequate localizations is implementation dependent. The constructors Collator, NumberFormat, DateTimeFormat, and PluralRules map the language tags used in requests to locales supported by their respective implementations.
+    
+    </p>
+
+
+    <emu-clause id="sec-unicode-locale-extension-sequences">
+      <h1><span class="secnum">1.2.1</span>Unicode Locale Extension Sequences</h1>
+
+      <p>
+        This standard uses the term <code>"Unicode locale extension sequence"</code> for any substring of a language tag that is not part of a private use subtag sequence, starts with a separator <code>"-"</code> and the singleton <code>"u"</code>, and includes the maximum sequence of following non-singleton subtags and their preceding <code>"-"</code> separators.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-isstructurallyvalidlanguagetag" aoid="IsStructurallyValidLanguageTag">
+      <h1><span class="secnum">1.2.2</span>IsStructurallyValidLanguageTag ( <var>locale</var> )</h1>
+
+      <p>
+        The IsStructurallyValidLanguageTag abstract operation verifies that the <var>locale</var> argument (which must be a String value)
+      
+      </p>
+
+      <ul>
+        <li>represents a well-formed BCP 47 language tag as specified in RFC 5646 section 2.1, or successor,</li>
+        <li>does not include duplicate variant subtags, and</li>
+        <li>does not include duplicate singleton subtags.</li>
+      </ul>
+
+      <p>
+        The abstract operation returns true if <var>locale</var> can be generated from the ABNF grammar in section 2.1 of the RFC, starting with Language-Tag, and does not contain duplicate variant or singleton subtags (other than as a private use subtag). It returns false otherwise. Terminal value characters in the grammar are interpreted as the Unicode equivalents of the ASCII octet values given.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizelanguagetag" aoid="CanonicalizeLanguageTag">
+      <h1><span class="secnum">1.2.3</span>CanonicalizeLanguageTag ( <var>locale</var> )</h1>
+
+      <p>
+        The CanonicalizeLanguageTag abstract operation returns the canonical and case-regularized form of the <var>locale</var> argument (which must be a String value that is a structurally valid BCP 47 language tag as verified by the <emu-xref aoid="IsStructurallyValidLanguageTag" id="_ref_10"><a href="#sec-isstructurallyvalidlanguagetag">IsStructurallyValidLanguageTag</a></emu-xref> abstract operation).
+        A conforming implementation shall take the steps specified in RFC 5646 section 4.5, or successor, to bring the language tag into canonical form, and to regularize the case of the subtags. Furthermore, a conforming implementation shall not take the steps to bring a language tag into <code>"extlang form"</code>, nor shall it reorder variant subtags.
+      
+      </p>
+
+      <p>
+        The specifications for extensions to BCP 47 language tags, such as RFC 6067, may include canonicalization rules for the extension subtag sequences they define that go beyond the canonicalization rules of RFC 5646 section 4.5. Implementations are allowed, but not required, to apply these additional rules.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaultlocale" aoid="DefaultLocale">
+      <h1><span class="secnum">1.2.4</span>DefaultLocale ()</h1>
+
+      <p>
+        The DefaultLocale abstract operation returns a String value representing the structurally valid (<emu-xref href="#sec-isstructurallyvalidlanguagetag" id="_ref_0"><a href="#sec-isstructurallyvalidlanguagetag">1.2.2</a></emu-xref>) and  canonicalized (<emu-xref href="#sec-canonicalizelanguagetag" id="_ref_1"><a href="#sec-canonicalizelanguagetag">1.2.3</a></emu-xref>) BCP 47 language tag for the host environment's current locale.
+      
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-currency-codes">
+    <h1><span class="secnum">1.3</span>Currency Codes</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies currencies using 3-letter currency codes as defined by ISO 4217. Their canonical form is upper case.
+    
+    </p>
+
+    <p>
+      All well-formed 3-letter ISO 4217 currency codes are allowed. However, the set of combinations of currency code and language tag for which localized currency symbols are available is implementation dependent. Where a localized currency symbol is not available, the ISO 4217 currency code is used for formatting.
+    
+    </p>
+
+    <emu-clause id="sec-iswellformedcurrencycode" aoid="IsWellFormedCurrencyCode">
+      <h1><span class="secnum">1.3.1</span>IsWellFormedCurrencyCode ( <var>currency</var> )</h1>
+
+      <p>
+        The IsWellFormedCurrencyCode abstract operation verifies that the <var>currency</var> argument (which must be a String value) represents a well-formed 3-letter ISO currency code. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>normalized</var> be the result of mapping <var>currency</var> to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_2"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>.</li><li>If the number of elements in <var>normalized</var> is not 3, return <emu-val>false</emu-val>.</li><li>If <var>normalized</var> contains any character that is not in the range <code>"A"</code> to <code>"Z"</code> (U+0041 to U+005A), return <emu-val>false</emu-val>.</li><li>Return <emu-val>true</emu-val>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-time-zone-names">
+    <h1><span class="secnum">1.4</span>Time Zone Names</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies time zones using the Zone and Link names of the IANA Time Zone Database. Their canonical form is the corresponding Zone name in the casing used in the IANA Time Zone Database.
+    
+    </p>
+
+    <p>
+      All registered Zone and Link names are allowed. Implementations must recognize all such names, and use best available current and historical information about their offsets from UTC and their daylight saving time rules in calculations. However, the set of combinations of time zone name and language tag for which localized time zone names are available is implementation dependent.
+    
+    </p>
+
+    <emu-clause id="sec-isvalidtimezonename" aoid="IsValidTimeZoneName">
+      <h1><span class="secnum">1.4.1</span>IsValidTimeZoneName ( <var>timeZone</var> )</h1>
+
+      <p>
+        The IsValidTimeZoneName abstract operation verifies that the <var>timeZone</var> argument (which must be a String value) represents a valid Zone or Link name of the IANA Time Zone Database.
+      
+      </p>
+      <p>
+        The abstract operation returns true if <var>timeZone</var>, converted to upper case as described in  <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_3"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>, is equal to one of the Zone or Link names of the IANA Time Zone Database, converted to upper case as described in  <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_4"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>. It returns false otherwise.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizetimezonename" aoid="CanonicalizeTimeZoneName">
+      <h1><span class="secnum">1.4.2</span>CanonicalizeTimeZoneName</h1>
+
+      <p>
+        The CanonicalizeTimeZoneName abstract operation returns the canonical and case-regularized form of the <var>timeZone</var> argument (which must be a String value that is a valid time zone name as verified by the <emu-xref aoid="IsValidTimeZoneName" id="_ref_11"><a href="#sec-isvalidtimezonename">IsValidTimeZoneName</a></emu-xref> abstract operation). The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>ianaTimeZone</var> be the Zone or Link name of the IANA Time Zone Database such that <var>timeZone</var>, converted to  upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_5"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>, is equal to <var>ianaTimeZone</var>, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_6"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>.</li><li>If <var>ianaTimeZone</var> is a Link name, let <var>ianaTimeZone</var> be the corresponding Zone name as specified in the <code>"backward"</code> file of the IANA Time Zone Database.</li><li>If <var>ianaTimeZone</var> is <code>"Etc/UTC"</code> or <code>"Etc/GMT"</code>, return <code>"UTC"</code>.</li><li>Return <var>ianaTimeZone</var>.
+      </li></ol></emu-alg>
+
+      <p>
+        The Intl.DateTimeFormat constructor allows this time zone name; if the time zone is not specified, the host environment's current time zone is used. Implementations shall support UTC and the host environment's current time zone (if different from UTC) in formatting.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaulttimezone" aoid="DefaultTimeZone">
+      <h1><span class="secnum">1.4.3</span>DefaultTimeZone ()</h1>
+
+      <p>
+        The DefaultTimeZone abstract operation returns a String value representing the valid (<emu-xref href="#sec-isvalidtimezonename" id="_ref_7"><a href="#sec-isvalidtimezonename">1.4.1</a></emu-xref>) and canonicalized (<emu-xref href="#sec-canonicalizetimezonename" id="_ref_8"><a href="#sec-canonicalizetimezonename">1.4.2</a></emu-xref>) time zone name for the host environment's current time zone.
+      
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <ins class="block">
+
+  <emu-clause id="sec-measurement-unit-identifiers">
+    <h1><span class="secnum">1.5</span>Measurement Unit Identifiers</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies measurement units using a  <em>core unit identifier</em> as defined by Unicode Technical Standard #35, Part 2, Section 6. Their canonical form is a string containing all lowercase letters with zero or more hyphens.
+    
+    </p>
+
+    <p>
+      Only a limited set of core unit identifiers are allowed.  An illegal core unit identifier results in a RangeError.
+    
+    </p>
+
+    <emu-clause id="sec-iswellformedunitidentifier" aoid="IsWellFormedUnitIdentifier">
+      <h1><span class="secnum">1.5.1</span>IsWellFormedUnitIdentifier ( <var>unitIdentifier</var> )</h1>
+
+      <p>
+        The IsWellFormedUnitIdentifier abstract operation verifies that the <var>unitIdentifier</var> argument (which must be a String value) represents a well-formed core unit identifier as defined in UTS #35, Part 2, Section 6. In addition to obeying the UTS #35 core unit identifier syntax, <var>unitIdentifier</var> must be one of the identifiers sanctioned by UTS #35 or be a compound unit composed of two sanctioned simple units. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If the result of <emu-xref aoid="IsSanctionedSimpleUnitIdentifier" id="_ref_12"><a href="#sec-issanctionedsimpleunitidentifier">IsSanctionedSimpleUnitIdentifier</a></emu-xref>(<var>unitIdentifier</var>) is <emu-val>true</emu-val>, then<ol><li>Return <emu-val>true</emu-val>.</li></ol></li><li>If the substring <code>"-per-"</code> does not occur exactly once in <var>unitIdentifier</var>, then<ol><li>Return <emu-val>false</emu-val>.</li></ol></li><li>Let <var>numerator</var> be the substring of <var>unitIdentifier</var> from the beginning to just before <code>"-per-"</code>.</li><li>If the result of <emu-xref aoid="IsSanctionedSimpleUnitIdentifier" id="_ref_13"><a href="#sec-issanctionedsimpleunitidentifier">IsSanctionedSimpleUnitIdentifier</a></emu-xref>(<var>numerator</var>) is <emu-val>false</emu-val>, then<ol><li>Return <emu-val>false</emu-val>.</li></ol></li><li>Let <var>denominator</var> be the substring of <var>unitIdentifier</var> from just after <code>"-per-"</code> to the end.</li><li>If the result of <emu-xref aoid="IsSanctionedSimpleUnitIdentifier" id="_ref_14"><a href="#sec-issanctionedsimpleunitidentifier">IsSanctionedSimpleUnitIdentifier</a></emu-xref>(<var>denominator</var>) is <emu-val>false</emu-val>, then<ol><li>Return <emu-val>false</emu-val>.</li></ol></li><li>Return <emu-val>true</emu-val>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-issanctionedsimpleunitidentifier" aoid="IsSanctionedSimpleUnitIdentifier">
+      <h1><span class="secnum">1.5.2</span>IsSanctionedSimpleUnitIdentifier ( <var>unitIdentifier</var> )</h1>
+
+      <p>
+        The IsSanctionedSimpleUnitIdentifier abstract operation verifies that the given core unit identifier is among the simple units sanctioned in the current version of the ECMAScript standard, a subset of the Validity Data as described in UTS #35, Part 1, Section 3.11; the list may grow over time. As discussed in UTS #35, a simple unit is one that does not have a numerator and denominator. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If <var>unitIdentifier</var> is listed in <emu-xref href="#table-sanctioned-simple-unit-identifiers" id="_ref_9"><a href="#table-sanctioned-simple-unit-identifiers">Table 1</a></emu-xref> below, return <emu-val>true</emu-val>.</li><li>Else, Return <emu-val>false</emu-val>.
+      </li></ol></emu-alg>
+
+      <emu-table id="table-sanctioned-simple-unit-identifiers"><figure><figcaption>Table 1: Simple units sanctioned for use in ECMAScript</figcaption>
+        
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Simple Unit</th>
+            </tr>
+          </thead>
+          <tbody><tr><td>acre</td></tr>
+          <tr><td>bit</td></tr>
+          <tr><td>byte</td></tr>
+          <tr><td>celsius</td></tr>
+          <tr><td>centimeter</td></tr>
+          <tr><td>day</td></tr>
+          <tr><td>degree</td></tr>
+          <tr><td>fahrenheit</td></tr>
+          <tr><td>fluid-ounce</td></tr>
+          <tr><td>foot</td></tr>
+          <tr><td>gallon</td></tr>
+          <tr><td>gigabit</td></tr>
+          <tr><td>gigabyte</td></tr>
+          <tr><td>gram</td></tr>
+          <tr><td>hectare</td></tr>
+          <tr><td>hour</td></tr>
+          <tr><td>inch</td></tr>
+          <tr><td>kilobit</td></tr>
+          <tr><td>kilobyte</td></tr>
+          <tr><td>kilogram</td></tr>
+          <tr><td>kilometer</td></tr>
+          <tr><td>liter</td></tr>
+          <tr><td>megabit</td></tr>
+          <tr><td>megabyte</td></tr>
+          <tr><td>meter</td></tr>
+          <tr><td>mile</td></tr>
+          <tr><td>mile-scandinavian</td></tr>
+          <tr><td>millimeter</td></tr>
+          <tr><td>milliliter</td></tr>
+          <tr><td>millisecond</td></tr>
+          <tr><td>minute</td></tr>
+          <tr><td>month</td></tr>
+          <tr><td>ounce</td></tr>
+          <tr><td>percent</td></tr>
+          <tr><td>petabyte</td></tr>
+          <tr><td>pound</td></tr>
+          <tr><td>second</td></tr>
+          <tr><td>stone</td></tr>
+          <tr><td>terabit</td></tr>
+          <tr><td>terabyte</td></tr>
+          <tr><td>week</td></tr>
+          <tr><td>yard</td></tr>
+          <tr><td>year</td></tr>
+        </tbody></table>
+      </figure></emu-table>
+    </emu-clause>
+  </emu-clause>
+  </ins>
+
+</emu-clause>
+</div></body>
\ No newline at end of file
diff --git a/section6/locales-currencies-tz_proposed.html b/section6/locales-currencies-tz_proposed.html
new file mode 100644
index 0000000..b21b8e8
--- /dev/null
+++ b/section6/locales-currencies-tz_proposed.html
@@ -0,0 +1,261 @@
+<emu-clause id="locales-currencies-tz">
+  <h1>Identification of Locales, Currencies, Time Zones, and Measurement Units</h1>
+
+  <p>
+    This clause describes the String values used in the ECMAScript 2019 Internationalization API Specification to identify locales, currencies, time zones, and measurement units.
+  </p>
+
+  <emu-clause id="sec-case-sensitivity-and-case-mapping">
+    <h1>Case Sensitivity and Case Mapping</h1>
+
+    <p>
+      The String values used to identify locales, currencies, and time zones are interpreted in a case-insensitive manner, treating the Unicode Basic Latin characters `"A"` to `"Z"` (U+0041 to U+005A) as equivalent to the corresponding Basic Latin characters `"a"` to `"z"` (U+0061 to U+007A). No other case folding equivalences are applied. When mapping to upper case, a mapping shall be used that maps characters in the range `"a"` to `"z"` (U+0061 to U+007A) to the corresponding characters in the range `"A"` to `"Z"` (U+0041 to U+005A) and maps no other characters to the latter range.
+    </p>
+
+    <p>
+      EXAMPLES `"ß"` (U+00DF) must not match or be mapped to `"SS"` (U+0053, U+0053). `"ı"` (U+0131) must not match or be mapped to `"I"` (U+0049).
+    </p>
+  </emu-clause>
+
+  <emu-clause id="sec-language-tags">
+    <h1>Language Tags</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies locales using language tags as defined by IETF BCP 47 (RFCs 5646 and 4647 or their successors), which may include extensions such as those registered through RFC 6067. Their canonical form is specified in RFC 5646 section 4.5 or its successor.
+    </p>
+
+    <p>
+      BCP 47 language tags that meet those validity criteria of RFC 5646 section 2.2.9 that can be verified without reference to the IANA Language Subtag Registry are considered structurally valid. All structurally valid language tags are valid for use with the APIs defined by this standard. However, the set of locales and thus language tags that an implementation supports with adequate localizations is implementation dependent. The constructors Collator, NumberFormat, DateTimeFormat, and PluralRules map the language tags used in requests to locales supported by their respective implementations.
+    </p>
+
+
+    <emu-clause id="sec-unicode-locale-extension-sequences">
+      <h1>Unicode Locale Extension Sequences</h1>
+
+      <p>
+        This standard uses the term `"Unicode locale extension sequence"` for any substring of a language tag that is not part of a private use subtag sequence, starts with a separator `"-"` and the singleton `"u"`, and includes the maximum sequence of following non-singleton subtags and their preceding `"-"` separators.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-isstructurallyvalidlanguagetag" aoid="IsStructurallyValidLanguageTag">
+      <h1>IsStructurallyValidLanguageTag ( _locale_ )</h1>
+
+      <p>
+        The IsStructurallyValidLanguageTag abstract operation verifies that the _locale_ argument (which must be a String value)
+      </p>
+
+      <ul>
+        <li>represents a well-formed BCP 47 language tag as specified in RFC 5646 section 2.1, or successor,</li>
+        <li>does not include duplicate variant subtags, and</li>
+        <li>does not include duplicate singleton subtags.</li>
+      </ul>
+
+      <p>
+        The abstract operation returns true if _locale_ can be generated from the ABNF grammar in section 2.1 of the RFC, starting with Language-Tag, and does not contain duplicate variant or singleton subtags (other than as a private use subtag). It returns false otherwise. Terminal value characters in the grammar are interpreted as the Unicode equivalents of the ASCII octet values given.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizelanguagetag" aoid="CanonicalizeLanguageTag">
+      <h1>CanonicalizeLanguageTag ( _locale_ )</h1>
+
+      <p>
+        The CanonicalizeLanguageTag abstract operation returns the canonical and case-regularized form of the _locale_ argument (which must be a String value that is a structurally valid BCP 47 language tag as verified by the IsStructurallyValidLanguageTag abstract operation).
+        A conforming implementation shall take the steps specified in RFC 5646 section 4.5, or successor, to bring the language tag into canonical form, and to regularize the case of the subtags. Furthermore, a conforming implementation shall not take the steps to bring a language tag into `"extlang form"`, nor shall it reorder variant subtags.
+      </p>
+
+      <p>
+        The specifications for extensions to BCP 47 language tags, such as RFC 6067, may include canonicalization rules for the extension subtag sequences they define that go beyond the canonicalization rules of RFC 5646 section 4.5. Implementations are allowed, but not required, to apply these additional rules.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaultlocale" aoid="DefaultLocale">
+      <h1>DefaultLocale ()</h1>
+
+      <p>
+        The DefaultLocale abstract operation returns a String value representing the structurally valid (<emu-xref href="#sec-isstructurallyvalidlanguagetag"></emu-xref>) and  canonicalized (<emu-xref href="#sec-canonicalizelanguagetag"></emu-xref>) BCP 47 language tag for the host environment's current locale.
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-currency-codes">
+    <h1>Currency Codes</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies currencies using 3-letter currency codes as defined by ISO 4217. Their canonical form is upper case.
+    </p>
+
+    <p>
+      All well-formed 3-letter ISO 4217 currency codes are allowed. However, the set of combinations of currency code and language tag for which localized currency symbols are available is implementation dependent. Where a localized currency symbol is not available, the ISO 4217 currency code is used for formatting.
+    </p>
+
+    <emu-clause id="sec-iswellformedcurrencycode" aoid="IsWellFormedCurrencyCode">
+      <h1>IsWellFormedCurrencyCode ( _currency_ )</h1>
+
+      <p>
+        The IsWellFormedCurrencyCode abstract operation verifies that the _currency_ argument (which must be a String value) represents a well-formed 3-letter ISO currency code. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _normalized_ be the result of mapping _currency_ to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+        1. If the number of elements in _normalized_ is not 3, return *false*.
+        1. If _normalized_ contains any character that is not in the range `"A"` to `"Z"` (U+0041 to U+005A), return *false*.
+        1. Return *true*.
+      </emu-alg>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-time-zone-names">
+    <h1>Time Zone Names</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies time zones using the Zone and Link names of the IANA Time Zone Database. Their canonical form is the corresponding Zone name in the casing used in the IANA Time Zone Database.
+    </p>
+
+    <p>
+      All registered Zone and Link names are allowed. Implementations must recognize all such names, and use best available current and historical information about their offsets from UTC and their daylight saving time rules in calculations. However, the set of combinations of time zone name and language tag for which localized time zone names are available is implementation dependent.
+    </p>
+
+    <emu-clause id="sec-isvalidtimezonename" aoid="IsValidTimeZoneName">
+      <h1>IsValidTimeZoneName ( _timeZone_ )</h1>
+
+      <p>
+        The IsValidTimeZoneName abstract operation verifies that the _timeZone_ argument (which must be a String value) represents a valid Zone or Link name of the IANA Time Zone Database.
+      </p>
+      <p>
+        The abstract operation returns true if _timeZone_, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>, is equal to one of the Zone or Link names of the IANA Time Zone Database, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>. It returns false otherwise.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizetimezonename" aoid="CanonicalizeTimeZoneName">
+      <h1>CanonicalizeTimeZoneName</h1>
+
+      <p>
+        The CanonicalizeTimeZoneName abstract operation returns the canonical and case-regularized form of the _timeZone_ argument (which must be a String value that is a valid time zone name as verified by the IsValidTimeZoneName abstract operation). The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. Let _ianaTimeZone_ be the Zone or Link name of the IANA Time Zone Database such that _timeZone_, converted to  upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>, is equal to _ianaTimeZone_, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping"></emu-xref>.
+        1. If _ianaTimeZone_ is a Link name, let _ianaTimeZone_ be the corresponding Zone name as specified in the `"backward"` file of the IANA Time Zone Database.
+        1. If _ianaTimeZone_ is `"Etc/UTC"` or `"Etc/GMT"`, return `"UTC"`.
+        1. Return _ianaTimeZone_.
+      </emu-alg>
+
+      <p>
+        The Intl.DateTimeFormat constructor allows this time zone name; if the time zone is not specified, the host environment's current time zone is used. Implementations shall support UTC and the host environment's current time zone (if different from UTC) in formatting.
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaulttimezone" aoid="DefaultTimeZone">
+      <h1>DefaultTimeZone ()</h1>
+
+      <p>
+        The DefaultTimeZone abstract operation returns a String value representing the valid (<emu-xref href="#sec-isvalidtimezonename"></emu-xref>) and canonicalized (<emu-xref href="#sec-canonicalizetimezonename"></emu-xref>) time zone name for the host environment's current time zone.
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-measurement-unit-identifiers">
+    <h1>Measurement Unit Identifiers</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies measurement units using a <em>core unit identifier</em> as defined by Unicode Technical Standard #35, Part 2, Section 6. Their canonical form is a string containing all lowercase letters with zero or more hyphens.
+    </p>
+
+    <p>
+      Only a limited set of core unit identifiers are allowed.  An illegal core unit identifier results in a RangeError.
+    </p>
+
+    <emu-clause id="sec-iswellformedunitidentifier" aoid="IsWellFormedUnitIdentifier">
+      <h1>IsWellFormedUnitIdentifier ( _unitIdentifier_ )</h1>
+
+      <p>
+        The IsWellFormedUnitIdentifier abstract operation verifies that the _unitIdentifier_ argument (which must be a String value) represents a well-formed core unit identifier as defined in UTS #35, Part 2, Section 6. In addition to obeying the UTS #35 core unit identifier syntax, _unitIdentifier_ must be one of the identifiers sanctioned by UTS #35 or be a compound unit composed of two sanctioned simple units. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. If the result of IsSanctionedSimpleUnitIdentifier(_unitIdentifier_) is *true*, then
+          1. Return *true*.
+        1. If the substring `"-per-"` does not occur exactly once in _unitIdentifier_, then
+          1. Return *false*.
+        1. Let _numerator_ be the substring of _unitIdentifier_ from the beginning to just before `"-per-"`.
+        1. If the result of IsSanctionedSimpleUnitIdentifier(_numerator_) is *false*, then
+          1. Return *false*.
+        1. Let _denominator_ be the substring of _unitIdentifier_ from just after `"-per-"` to the end.
+        1. If the result of IsSanctionedSimpleUnitIdentifier(_denominator_) is *false*, then
+          1. Return *false*.
+        1. Return *true*.
+      </emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-issanctionedsimpleunitidentifier" aoid="IsSanctionedSimpleUnitIdentifier">
+      <h1>IsSanctionedSimpleUnitIdentifier ( _unitIdentifier_ )</h1>
+
+      <p>
+        The IsSanctionedSimpleUnitIdentifier abstract operation verifies that the given core unit identifier is among the simple units sanctioned in the current version of the ECMAScript standard, a subset of the Validity Data as described in UTS #35, Part 1, Section 3.11; the list may grow over time. As discussed in UTS #35, a simple unit is one that does not have a numerator and denominator. The following steps are taken:
+      </p>
+
+      <emu-alg>
+        1. If _unitIdentifier_ is listed in <emu-xref href="#table-sanctioned-simple-unit-identifiers"></emu-xref> below, return *true*.
+        1. Else, Return *false*.
+      </emu-alg>
+
+      <emu-table id="table-sanctioned-simple-unit-identifiers">
+        <emu-caption>Simple units sanctioned for use in ECMAScript</emu-caption>
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Simple Unit</th>
+            </tr>
+          </thead>
+          <tr><td>acre</td></tr>
+          <tr><td>bit</td></tr>
+          <tr><td>byte</td></tr>
+          <tr><td>celsius</td></tr>
+          <tr><td>centimeter</td></tr>
+          <tr><td>day</td></tr>
+          <tr><td>degree</td></tr>
+          <tr><td>fahrenheit</td></tr>
+          <tr><td>fluid-ounce</td></tr>
+          <tr><td>foot</td></tr>
+          <tr><td>gallon</td></tr>
+          <tr><td>gigabit</td></tr>
+          <tr><td>gigabyte</td></tr>
+          <tr><td>gram</td></tr>
+          <tr><td>hectare</td></tr>
+          <tr><td>hour</td></tr>
+          <tr><td>inch</td></tr>
+          <tr><td>kilobit</td></tr>
+          <tr><td>kilobyte</td></tr>
+          <tr><td>kilogram</td></tr>
+          <tr><td>kilometer</td></tr>
+          <tr><td>liter</td></tr>
+          <tr><td>megabit</td></tr>
+          <tr><td>megabyte</td></tr>
+          <tr><td>meter</td></tr>
+          <tr><td>mile</td></tr>
+          <tr><td>mile-scandinavian</td></tr>
+          <tr><td>millimeter</td></tr>
+          <tr><td>milliliter</td></tr>
+          <tr><td>millisecond</td></tr>
+          <tr><td>minute</td></tr>
+          <tr><td>month</td></tr>
+          <tr><td>ounce</td></tr>
+          <tr><td>percent</td></tr>
+          <tr><td>petabyte</td></tr>
+          <tr><td>pound</td></tr>
+          <tr><td>second</td></tr>
+          <tr><td>stone</td></tr>
+          <tr><td>terabit</td></tr>
+          <tr><td>terabyte</td></tr>
+          <tr><td>week</td></tr>
+          <tr><td>yard</td></tr>
+          <tr><td>year</td></tr>
+        </table>
+      </emu-table>
+    </emu-clause>
+  </emu-clause>
+
+</emu-clause>
diff --git a/section6/locales-currencies-tz_proposed_out.html b/section6/locales-currencies-tz_proposed_out.html
new file mode 100644
index 0000000..3ae1264
--- /dev/null
+++ b/section6/locales-currencies-tz_proposed_out.html
@@ -0,0 +1,2069 @@
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+  this.displayResults([]);
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+  if (this._closeAfterSearch) {
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+
+  // keydown events for pinned clauses
+  document.addEventListener('keydown', this.documentKeydown.bind(this));
+
+  // toc expansion
+  var tocItems = this.$menu.querySelectorAll('#menu-toc li');
+  for (var i = 0; i < tocItems.length; i++) {
+    var $item = tocItems[i];
+    $item.addEventListener('click', function($item, event) {
+      $item.classList.toggle('active');
+      event.stopPropagation();
+    }.bind(null, $item));
+  }
+
+  // close toc on toc item selection
+  var tocLinks = this.$menu.querySelectorAll('#menu-toc li > a');
+  for (var i = 0; i < tocLinks.length; i++) {
+    var $link = tocLinks[i];
+    $link.addEventListener('click', function(event) {
+      this.toggle();
+      event.stopPropagation();
+    }.bind(this));
+  }
+
+  // update active clause on scroll
+  window.addEventListener('scroll', debounce(this.updateActiveClause.bind(this)));
+  this.updateActiveClause();
+
+  // prevent menu scrolling from scrolling the body
+  this.$toc.addEventListener('wheel', function (e) {
+    var target = e.currentTarget;
+    var offTop = e.deltaY < 0 && target.scrollTop === 0;
+    if (offTop) {
+      e.preventDefault();
+    }
+    var offBottom = e.deltaY > 0
+                    && target.offsetHeight + target.scrollTop >= target.scrollHeight;
+
+    if (offBottom) {
+		  e.preventDefault();
+	  }
+  })
+}
+
+Menu.prototype.documentKeydown = function (e) {
+  e.stopPropagation();
+  if (e.keyCode === 80) {
+    this.togglePinEntry();
+  } else if (e.keyCode > 48 && e.keyCode < 58) {
+    this.selectPin(e.keyCode - 49);
+  }
+}
+
+Menu.prototype.updateActiveClause = function () {
+  this.setActiveClause(findActiveClause(this.$specContainer))
+}
+
+Menu.prototype.setActiveClause = function (clause) {
+  this.$activeClause = clause;
+  this.revealInToc(this.$activeClause);
+}
+
+Menu.prototype.revealInToc = function (path) {
+  var current = this.$toc.querySelectorAll('li.revealed');
+  for (var i = 0; i < current.length; i++) {
+    current[i].classList.remove('revealed');
+    current[i].classList.remove('revealed-leaf');
+  }
+  
+  var current = this.$toc;
+  var index = 0;
+  while (index < path.length) {
+    var children = current.children;
+    for (var i = 0; i < children.length; i++) {
+      if ('#' + path[index].id === children[i].children[1].getAttribute('href') ) {
+        children[i].classList.add('revealed');
+        if (index === path.length - 1) {
+          children[i].classList.add('revealed-leaf');
+          var rect = children[i].getBoundingClientRect();
+          this.$toc.getBoundingClientRect().top
+          var tocRect = this.$toc.getBoundingClientRect();
+          if (rect.top + 10 > tocRect.bottom) {
+            this.$toc.scrollTop = this.$toc.scrollTop + (rect.top - tocRect.bottom) + (rect.bottom - rect.top);
+          } else if (rect.top < tocRect.top) {
+            this.$toc.scrollTop = this.$toc.scrollTop - (tocRect.top - rect.top);
+          }
+        }
+        current = children[i].querySelector('ol');
+        index++;
+        break;
+      }      
+    }
+    
+  }
+}
+
+function findActiveClause(root, path) {
+  var clauses = new ClauseWalker(root);
+  var $clause;
+  var found = false;
+  var path = path || [];
+  
+  while ($clause = clauses.nextNode()) {
+    var rect = $clause.getBoundingClientRect();
+    var $header = $clause.children[0];
+    var marginTop = parseInt(getComputedStyle($header)["margin-top"]);
+    
+    if ((rect.top - marginTop) <= 0 && rect.bottom > 0) {
+      found = true;
+      return findActiveClause($clause, path.concat($clause)) || path;
+    }
+  }
+  
+  return path;
+}
+
+function ClauseWalker(root) {
+  var previous;
+  var treeWalker = document.createTreeWalker(
+    root,
+    NodeFilter.SHOW_ELEMENT,
+    {
+      acceptNode: function (node) {
+        if (previous === node.parentNode) {
+          return NodeFilter.FILTER_REJECT;
+        } else {
+          previous = node;
+        }
+        if (node.nodeName === 'EMU-CLAUSE' || node.nodeName === 'EMU-INTRO' || node.nodeName === 'EMU-ANNEX') {
+          return NodeFilter.FILTER_ACCEPT;
+        } else {
+          return NodeFilter.FILTER_SKIP;
+        }
+      }
+    },
+    false
+    );
+  
+  return treeWalker;
+}
+
+Menu.prototype.toggle = function () {
+  this.$menu.classList.toggle('active');
+}
+
+Menu.prototype.show = function () {
+  this.$menu.classList.add('active');
+}
+
+Menu.prototype.hide = function () {
+  this.$menu.classList.remove('active');
+}
+
+Menu.prototype.isVisible = function() {
+  return this.$menu.classList.contains('active');
+}
+
+Menu.prototype.showPins = function () {
+  this.$pins.classList.add('active');
+}
+
+Menu.prototype.hidePins = function () {
+  this.$pins.classList.remove('active');
+}
+
+Menu.prototype.addPinEntry = function (id) {
+  var entry = this.search.biblio.byId[id];
+  if (!entry) {
+    // id was deleted after pin (or something) so remove it
+    delete this._pinnedIds[id];
+    this.persistPinEntries();
+    return;
+  }
+
+  if (entry.type === 'clause') {
+    var prefix;
+    if (entry.number) {
+      prefix = entry.number + ' ';
+    } else {
+      prefix = '';
+    }
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + prefix + entry.titleHTML + '</a></li>';
+  } else {
+    this.$pinList.innerHTML += '<li><a href="#' + entry.id + '">' + entry.key + '</a></li>';
+  }
+
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.showPins();
+  }
+  this._pinnedIds[id] = true;
+  this.persistPinEntries();
+}
+
+Menu.prototype.removePinEntry = function (id) {
+  var item = this.$pinList.querySelector('a[href="#' + id + '"]').parentNode;
+  this.$pinList.removeChild(item);
+  delete this._pinnedIds[id];
+  if (Object.keys(this._pinnedIds).length === 0) {
+    this.hidePins();
+  }
+
+  this.persistPinEntries();
+}
+
+Menu.prototype.persistPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+
+  localStorage.pinEntries = JSON.stringify(Object.keys(this._pinnedIds));
+}
+
+Menu.prototype.loadPinEntries = function () {
+  try {
+    if (!window.localStorage) return;
+  } catch (e) {
+    return;
+  }
+  
+  var pinsString = window.localStorage.pinEntries;
+  if (!pinsString) return;
+  var pins = JSON.parse(pinsString);
+  for(var i = 0; i < pins.length; i++) {
+    this.addPinEntry(pins[i]);
+  }
+}
+
+Menu.prototype.togglePinEntry = function (id) {
+  if (!id) {
+    id = this.$activeClause[this.$activeClause.length - 1].id;
+  }
+
+  if (this._pinnedIds[id]) {
+    this.removePinEntry(id);
+  } else {
+    this.addPinEntry(id);
+  }
+}
+
+Menu.prototype.selectPin = function (num) {
+  document.location = this.$pinList.children[num].children[0].href;
+}
+
+var menu;
+function init() {
+  menu = new Menu();
+  var $container = document.getElementById('spec-container');
+  $container.addEventListener('mouseover', debounce(function (e) {
+    Toolbox.activateIfMouseOver(e);
+  }));
+}
+
+document.addEventListener('DOMContentLoaded', init);
+
+function debounce(fn, opts) {
+  opts = opts || {};
+  var timeout;
+  return function(e) {
+    if (opts.stopPropagation) {
+      e.stopPropagation();
+    }
+    var args = arguments;
+    if (timeout) {
+      clearTimeout(timeout);
+    }
+    timeout = setTimeout(function() {
+      timeout = null;
+      fn.apply(this, args);
+    }.bind(this), 150);
+  }
+}
+
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+
+
+
+
+// The following license applies to the fuzzysearch function
+// The MIT License (MIT)
+// Copyright © 2015 Nicolas Bevacqua
+// Copyright © 2016 Brian Terlson
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+function fuzzysearch (searchString, haystack, caseInsensitive) {
+  var tlen = haystack.length;
+  var qlen = searchString.length;
+  var chunks = 1;
+  var finding = false;
+  var prefix = true;
+  
+  if (qlen > tlen) {
+    return false;
+  }
+  
+  if (qlen === tlen) {
+    if (searchString === haystack) {
+      return { caseMatch: true, chunks: 1, prefix: true };
+    } else if (searchString.toLowerCase() === haystack.toLowerCase()) {
+      return { caseMatch: false, chunks: 1, prefix: true };
+    } else {
+      return false;
+    }
+  }
+  
+  outer: for (var i = 0, j = 0; i < qlen; i++) {
+    var nch = searchString[i];
+    while (j < tlen) {
+      var targetChar = haystack[j++];
+      if (targetChar === nch) {
+        finding = true;
+        continue outer;
+      }
+      if (finding) {
+        chunks++;
+        finding = false;
+      }
+    }
+    
+    if (caseInsensitive) { return false }
+    
+    return fuzzysearch(searchString.toLowerCase(), haystack.toLowerCase(), true);
+  }
+  
+  return { caseMatch: !caseInsensitive, chunks: chunks, prefix: j <= qlen };
+}
+
+var Toolbox = {
+  init: function () {
+    this.$container = document.createElement('div');
+    this.$container.classList.add('toolbox');
+    this.$permalink = document.createElement('a');
+    this.$permalink.textContent = 'Permalink';
+    this.$pinLink = document.createElement('a');
+    this.$pinLink.textContent = 'Pin';
+    this.$pinLink.setAttribute('href', '#');
+    this.$pinLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      menu.togglePinEntry(this.entry.id);
+    }.bind(this));
+
+    this.$refsLink = document.createElement('a');
+    this.$refsLink.setAttribute('href', '#');
+    this.$refsLink.addEventListener('click', function (e) {
+      e.preventDefault();
+      e.stopPropagation();
+      referencePane.showReferencesFor(this.entry);
+    }.bind(this));
+    this.$container.appendChild(this.$permalink);
+    this.$container.appendChild(this.$pinLink);
+    this.$container.appendChild(this.$refsLink);
+    document.body.appendChild(this.$container);
+  },
+
+  activate: function (el, entry, target) {
+    if (el === this._activeEl) return;
+    this.active = true;
+    this.entry = entry;
+    this.$container.classList.add('active');
+    this.top = el.offsetTop - this.$container.offsetHeight - 10;
+    this.left = el.offsetLeft;
+    this.$container.setAttribute('style', 'left: ' + this.left + 'px; top: ' + this.top + 'px');
+    this.updatePermalink();
+    this.updateReferences();
+    this._activeEl = el;
+    if (this.top < document.body.scrollTop && el === target) {
+      // don't scroll unless it's a small thing (< 200px)
+      this.$container.scrollIntoView();
+    }
+  },
+
+  updatePermalink: function () {
+    this.$permalink.setAttribute('href', '#' + this.entry.id);
+  },
+
+  updateReferences: function () {
+    this.$refsLink.textContent = 'References (' + this.entry.referencingIds.length + ')';
+  },
+
+  activateIfMouseOver: function (e) {
+    var ref = this.findReferenceUnder(e.target);
+    if (ref && (!this.active || e.pageY > this._activeEl.offsetTop)) {
+      var entry = menu.search.biblio.byId[ref.id];
+      this.activate(ref.element, entry, e.target);
+    } else if (this.active && ((e.pageY < this.top) || e.pageY > (this._activeEl.offsetTop + this._activeEl.offsetHeight))) {
+      this.deactivate();
+    }
+  },
+
+  findReferenceUnder: function (el) {
+    while (el) {
+      var parent = el.parentNode;
+      if (el.nodeName === 'H1' && parent.nodeName.match(/EMU-CLAUSE|EMU-ANNEX|EMU-INTRO/) && parent.id) {
+        return { element: el, id: parent.id };
+      } else if (el.nodeName.match(/EMU-(?!CLAUSE|XREF|ANNEX|INTRO)|DFN/) &&
+                el.id && el.id[0] !== '_') {
+        if (el.nodeName === 'EMU-FIGURE' || el.nodeName === 'EMU-TABLE' || el.nodeName === 'EMU-EXAMPLE') {
+          // return the figcaption element
+          return { element: el.children[0].children[0], id: el.id };
+        } else if (el.nodeName === 'EMU-PRODUCTION') {
+          // return the LHS non-terminal element
+          return { element: el.children[0], id: el.id };
+        } else {
+          return { element: el, id: el.id };
+        }
+      }
+      el = parent;
+    }
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+    this._activeEl = null;
+    this.activeElBounds = null;
+    this.active = false;
+  }
+}
+
+var referencePane = {
+  init: function() {
+    this.$container = document.createElement('div');
+    this.$container.setAttribute('id', 'references-pane-container');
+
+    var $spacer = document.createElement('div');
+    $spacer.setAttribute('id', 'references-pane-spacer');
+
+    this.$pane = document.createElement('div');
+    this.$pane.setAttribute('id', 'references-pane');
+
+    this.$container.appendChild($spacer);
+    this.$container.appendChild(this.$pane);
+
+    this.$header = document.createElement('div');
+    this.$header.classList.add('menu-pane-header');
+    this.$header.textContent = 'References to ';
+    this.$headerRefId = document.createElement('a');
+    this.$header.appendChild(this.$headerRefId);
+    this.$closeButton = document.createElement('span');
+    this.$closeButton.setAttribute('id', 'references-pane-close');
+    this.$closeButton.addEventListener('click', function (e) {
+      this.deactivate();
+    }.bind(this));
+    this.$header.appendChild(this.$closeButton);
+
+    this.$pane.appendChild(this.$header);
+    var tableContainer = document.createElement('div');
+    tableContainer.setAttribute('id', 'references-pane-table-container');
+
+    this.$table = document.createElement('table');
+    this.$table.setAttribute('id', 'references-pane-table');
+
+    this.$tableBody = this.$table.createTBody();
+
+    tableContainer.appendChild(this.$table);
+    this.$pane.appendChild(tableContainer);
+
+    menu.$specContainer.appendChild(this.$container);
+  },
+
+  activate: function () {
+    this.$container.classList.add('active');
+  },
+
+  deactivate: function () {
+    this.$container.classList.remove('active');
+  },
+
+  showReferencesFor(entry) {
+    this.activate();
+    var newBody = document.createElement('tbody');
+    var previousId;
+    var previousCell;
+    var dupCount = 0;
+    this.$headerRefId.textContent = '#' + entry.id;
+    this.$headerRefId.setAttribute('href', '#' + entry.id);
+    entry.referencingIds.map(function (id) {
+      var target = document.getElementById(id);
+      var cid = findParentClauseId(target);
+      var clause = menu.search.biblio.byId[cid];
+      var dupCount = 0;
+      return { id: id, clause: clause }
+    }).sort(function (a, b) {
+      return sortByClauseNumber(a.clause, b.clause);
+    }).forEach(function (record, i) {
+      if (previousId === record.clause.id) {
+        previousCell.innerHTML += ' (<a href="#' + record.id + '">' + (dupCount + 2) + '</a>)';
+        dupCount++;
+      } else {
+        var row = newBody.insertRow();
+        var cell = row.insertCell();
+        cell.innerHTML = record.clause.number;
+        cell = row.insertCell();
+        cell.innerHTML = '<a href="#' + record.id + '">' + record.clause.titleHTML + '</a>';
+        previousCell = cell;
+        previousId = record.clause.id;
+        dupCount = 0;
+      }
+    }, this);
+    this.$table.removeChild(this.$tableBody);
+    this.$tableBody = newBody;
+    this.$table.appendChild(this.$tableBody);
+  }
+}
+function findParentClauseId(node) {
+  while (node && node.nodeName !== 'EMU-CLAUSE' && node.nodeName !== 'EMU-INTRO' && node.nodeName !== 'EMU-ANNEX') {
+    node = node.parentNode;
+  }
+  if (!node) return null;
+  return node.getAttribute('id');
+}
+
+function sortByClauseNumber(c1, c2) {
+  var c1c = c1.number.split('.');
+  var c2c = c2.number.split('.');
+
+  for (var i = 0; i < c1c.length; i++) {
+    if (i >= c2c.length) {
+      return 1;
+    }
+    
+    var c1 = c1c[i];
+    var c2 = c2c[i];
+    var c1cn = Number(c1);
+    var c2cn = Number(c2);
+
+    if (Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      if (c1 > c2) {
+        return 1;
+      } else if (c1 < c2) {
+        return -1;
+      }
+    } else if (!Number.isNaN(c1cn) && Number.isNaN(c2cn)) {
+      return -1;
+    } else if (Number.isNaN(c1cn) && !Number.isNaN(c2cn)) {
+      return 1;
+    } else if(c1cn > c2cn) {
+      return 1;
+    } else if (c1cn < c2cn) {
+      return -1;
+    }
+  }
+
+  if (c1c.length === c2c.length) {
+    return 0;
+  }
+  return -1;
+}
+
+document.addEventListener('DOMContentLoaded', function () {
+  Toolbox.init();
+  referencePane.init();
+})
+var CLAUSE_NODES = ['EMU-CLAUSE', 'EMU-INTRO', 'EMU-ANNEX'];
+function findLocalReferences ($elem) {
+  var name = $elem.innerHTML;
+  var references = [];
+
+  var parentClause = $elem.parentNode;
+  while (parentClause && CLAUSE_NODES.indexOf(parentClause.nodeName) === -1) {
+    parentClause = parentClause.parentNode;
+  }
+
+  if(!parentClause) return;
+
+  var vars = parentClause.querySelectorAll('var');
+
+  for (var i = 0; i < vars.length; i++) {
+    var $var = vars[i];
+
+    if ($var.innerHTML === name) {
+      references.push($var);
+    }
+  }
+
+  return references;
+}
+
+function toggleFindLocalReferences($elem) {
+  var references = findLocalReferences($elem);
+  if ($elem.classList.contains('referenced')) {
+    references.forEach(function ($reference) {
+      $reference.classList.remove('referenced');
+    });
+  } else {
+    references.forEach(function ($reference) {
+      $reference.classList.add('referenced');
+    });
+  }
+}
+
+function installFindLocalReferences () {
+  document.addEventListener('click', function (e) {
+    if (e.target.nodeName === 'VAR') {
+      toggleFindLocalReferences(e.target);
+    }
+  });
+}
+
+document.addEventListener('DOMContentLoaded', installFindLocalReferences);
+</script><style>body {
+  display: flex;
+  font-size: 18px;
+  line-height: 1.5;
+  font-family: Cambria, Palatino Linotype, Palatino, Liberation Serif, serif;
+  padding: 0;
+  margin: 0;
+  color: #111;
+}
+
+#spec-container {
+  padding: 0 20px;
+  flex-grow: 1;
+  flex-basis: 66%;
+  box-sizing: border-box;
+  overflow: hidden;
+}
+
+body.oldtoc {
+  margin: 0 auto;
+}
+
+a {
+    text-decoration: none;
+    color: #206ca7;
+}
+
+a:visited {
+  color: #206ca7;
+}
+
+a:hover {
+    text-decoration: underline;
+    color: #239dee;
+}
+
+
+code {
+    font-weight: bold;
+    font-family: Consolas, Monaco, monospace;
+    white-space: pre;
+}
+
+pre code {
+  font-weight: inherit;
+}
+
+pre code.hljs {
+  background-color: #fff;
+  margin: 0;
+  padding: 0;
+}
+
+ol.toc {
+    list-style: none;
+    padding-left: 0;
+}
+
+ol.toc ol.toc {
+    padding-left: 2ex;
+    list-style: none;
+}
+
+var {
+  color: #2aa198;
+  transition: background-color 0.25s ease;
+  cursor: pointer;
+}
+
+var.referenced {
+  background-color: #ffff33;
+}
+
+emu-const {
+  font-family: sans-serif;
+}
+
+emu-val {
+  font-weight: bold;
+}
+emu-alg ol, emu-alg ol ol ol ol {
+    list-style-type: decimal;
+}
+
+emu-alg ol ol, emu-alg ol ol ol ol ol {
+    list-style-type: lower-alpha;
+}
+
+emu-alg ol ol ol, ol ol ol ol ol ol {
+    list-style-type: lower-roman;
+}
+
+emu-eqn {
+  display: block;
+  margin-left: 4em;
+}
+
+emu-eqn.inline {
+  display: inline;
+  margin: 0;
+}
+
+emu-eqn div:first-child {
+  margin-left: -2em;
+}
+
+emu-note {
+    margin: 1em 0;
+    color: #666;
+    border-left: 5px solid #ccc;
+    display: flex;
+    flex-direction: row;
+}
+
+emu-note > span.note {
+    flex-basis: 100px;
+    min-width: 100px;
+    flex-grow: 0;
+    flex-shrink: 1;
+    text-transform: uppercase;
+    padding-left: 5px;
+}
+
+emu-note[type=editor] {
+  border-left-color: #faa;
+}
+
+emu-note > div.note-contents {
+  flex-grow: 1;
+  flex-shrink: 1;
+}
+
+emu-note > div.note-contents > p:first-of-type {
+  margin-top: 0;
+}
+
+emu-note > div.note-contents > p:last-of-type {
+  margin-bottom: 0;
+}
+
+emu-figure {
+  display: block;
+}
+
+emu-example {
+  display: block;
+  margin: 1em 3em;
+}
+
+emu-example figure figcaption {
+  margin-top: 0.5em;
+  text-align: left;
+}
+
+emu-figure figure,
+emu-example figure,
+emu-table figure {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+}
+
+emu-production {
+    display: block;
+    margin-top: 1em;
+    margin-bottom: 1em;
+    margin-left: 5ex;
+}
+
+emu-grammar.inline, emu-production.inline,
+emu-grammar.inline emu-production emu-rhs, emu-production.inline emu-rhs,
+emu-grammar[collapsed] emu-production emu-rhs, emu-production[collapsed] emu-rhs {
+    display: inline;
+    padding-left: 1ex;
+    margin-left: 0;
+}
+
+emu-grammar[collapsed] emu-production, emu-production[collapsed] {
+    margin: 0;
+}
+
+emu-constraints {
+    font-size: .75em;
+    margin-right: 1ex;
+}
+
+emu-gann {
+    margin-right: 1ex;
+}
+
+emu-gann emu-t:last-child,
+emu-gann emu-nt:last-child {
+    margin-right: 0;
+}
+
+emu-geq {
+    margin-left: 1ex;
+    font-weight: bold;
+}
+
+emu-oneof {
+    font-weight: bold;
+    margin-left: 1ex;
+}
+
+emu-nt {
+    display: inline-block;
+    font-style: italic;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-nt a, emu-nt a:visited {
+  color: #333;
+}
+
+emu-rhs emu-nt {
+    margin-right: 1ex;
+}
+
+emu-t {
+    display: inline-block;
+    font-family: monospace;
+    font-weight: bold;
+    white-space: nowrap;
+    text-indent: 0;
+}
+
+emu-production emu-t {
+    margin-right: 1ex;
+}
+
+emu-rhs {
+    display: block;
+    padding-left: 75px;
+    text-indent: -25px;
+}
+
+emu-mods {
+    font-size: .85em;
+    vertical-align: sub;
+    font-style: normal;
+    font-weight: normal;
+}
+
+emu-production[collapsed] emu-mods {
+  display: none;
+}
+
+emu-params, emu-opt {
+  margin-right: 1ex;
+  font-family: monospace;
+}
+
+emu-params, emu-constraints {
+  color: #2aa198;
+}
+
+emu-opt {
+  color: #b58900;
+}
+
+emu-gprose {
+    font-size: 0.9em;
+    font-family: Helvetica, Arial, sans-serif;
+}
+
+h1.shortname {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.version {
+  color: #f60;
+  font-size: 1.5em;
+  margin: 0;
+}
+
+h1.title {
+  margin-top: 0;
+  color: #f60;
+}
+
+h1.first {
+  margin-top: 0;
+}
+
+h1, h2, h3, h4, h5, h6 {
+    position: relative;
+}
+
+h1 .secnum {
+  text-decoration: none;
+  margin-right: 10px;
+}
+
+h1 span.title {
+  order: 2;
+}
+
+
+h1 { font-size: 2.67em; margin-top: 2em; margin-bottom: 0; line-height: 1em;}
+h2 { font-size: 2em; }
+h3 { font-size: 1.56em; }
+h4 { font-size: 1.25em; }
+h5 { font-size: 1.11em; }
+h6 { font-size: 1em; }
+
+h1:hover span.utils {
+  display: block;
+}
+
+span.utils {
+  font-size: 18px;
+  line-height: 18px;
+  display: none;
+  position: absolute;
+  top: 100%;
+  left: 0;
+  right: 0;
+  font-weight: normal;
+}
+
+span.utils:before {
+    content: "⤷";
+    display: inline-block;
+    padding: 0 5px;
+}
+
+span.utils > * {
+  display: inline-block;
+  margin-right: 20px;
+}
+
+h1 span.utils span.anchor a,
+h2 span.utils span.anchor a,
+h3 span.utils span.anchor a,
+h4 span.utils span.anchor a,
+h5 span.utils span.anchor a,
+h6 span.utils span.anchor a {
+  text-decoration: none;
+  font-variant: small-caps;
+}
+
+h1 span.utils span.anchor a:hover,
+h2 span.utils span.anchor a:hover,
+h3 span.utils span.anchor a:hover,
+h4 span.utils span.anchor a:hover,
+h5 span.utils span.anchor a:hover,
+h6 span.utils span.anchor a:hover {
+  color: #333;
+}
+
+emu-intro h1, emu-clause h1, emu-annex h1 { font-size: 2em; }
+emu-intro h2, emu-clause h2, emu-annex h2 { font-size: 1.56em; }
+emu-intro h3, emu-clause h3, emu-annex h3 { font-size: 1.25em; }
+emu-intro h4, emu-clause h4, emu-annex h4 { font-size: 1.11em; }
+emu-intro h5, emu-clause h5, emu-annex h5 { font-size: 1em; }
+emu-intro h6, emu-clause h6, emu-annex h6 { font-size: 0.9em; }
+emu-intro emu-intro h1, emu-clause emu-clause h1, emu-annex emu-annex h1 { font-size: 1.56em; }
+emu-intro emu-intro h2, emu-clause emu-clause h2, emu-annex emu-annex h2 { font-size: 1.25em; }
+emu-intro emu-intro h3, emu-clause emu-clause h3, emu-annex emu-annex h3 { font-size: 1.11em; }
+emu-intro emu-intro h4, emu-clause emu-clause h4, emu-annex emu-annex h4 { font-size: 1em; }
+emu-intro emu-intro h5, emu-clause emu-clause h5, emu-annex emu-annex h5 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex h1 { font-size: 1.25em; }
+emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex h2 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex h3 { font-size: 1em; }
+emu-intro emu-intro emu-intro h4, emu-clause emu-clause emu-clause h4, emu-annex emu-annex emu-annex h4 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1.11em; }
+emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex h2 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro h3, emu-clause emu-clause emu-clause emu-clause h3, emu-annex emu-annex emu-annex emu-annex h3 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 1em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro h2, emu-clause emu-clause emu-clause emu-clause emu-clause h2, emu-annex emu-annex emu-annex emu-annex emu-annex h2 { font-size: 0.9em; }
+emu-intro emu-intro emu-intro emu-intro emu-intro emu-intro h1, emu-clause emu-clause emu-clause emu-clause emu-clause emu-clause h1, emu-annex emu-annex emu-annex emu-annex emu-annex emu-annex h1 { font-size: 0.9em }
+
+emu-clause, emu-intro, emu-annex {
+    display: block;
+}
+
+/* Figures and tables */
+figure { display: block; margin: 1em 0 3em 0; }
+figure object { display: block; margin: 0 auto; }
+figure table.real-table { margin: 0 auto; }
+figure figcaption {
+    display: block;
+    color: #555555;
+    font-weight: bold;
+    text-align: center;
+}
+
+emu-table table {
+  margin: 0 auto;
+}
+
+emu-table table, table.real-table {
+    border-collapse: collapse;
+}
+
+emu-table td, emu-table th, table.real-table td, table.real-table th {
+    border: 1px solid black;
+    padding: 0.4em;
+    vertical-align: baseline;
+}
+emu-table th, emu-table thead td, table.real-table th {
+    background-color: #eeeeee;
+}
+
+/* Note: the left content edges of table.lightweight-table >tbody >tr >td
+   and div.display line up. */
+table.lightweight-table {
+    border-collapse: collapse;
+    margin: 0 0 0 1.5em;
+}
+table.lightweight-table td, table.lightweight-table th {
+    border: none;
+    padding: 0 0.5em;
+    vertical-align: baseline;
+}
+
+/* diff styles */
+ins {
+    background-color: #e0f8e0;
+    text-decoration: none;
+    border-bottom: 1px solid #396;
+}
+
+del {
+    background-color: #fee;
+}
+
+ins.block, del.block,
+emu-production > ins, emu-production > del,
+emu-grammar > ins, emu-grammar > del {
+  display: block;
+}
+emu-rhs > ins, emu-rhs > del { 
+  display: inline;
+}
+
+tr.ins > td > ins {
+  border-bottom: none;
+}
+
+tr.ins > td {
+  background-color: #e0f8e0;
+}
+
+tr.del > td {
+  background-color: #fee;
+}
+
+/* Menu Styles */
+#menu-toggle {
+  font-size: 2em;
+
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 1.5em;
+  height: 1.5em;
+  z-index: 3;
+  visibility: hidden;
+  color: #1567a2;
+  background-color: #fff;
+
+  line-height: 1.5em;
+  text-align: center;
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu {
+  display: flex;
+  flex-direction: column;
+  width: 33%; height: 100vh;
+  max-width: 500px;
+  box-sizing: border-box;
+  background-color: #ddd;
+  overflow: hidden;
+  transition: opacity 0.1s linear;
+  padding: 0 5px;
+  position: fixed;
+  left: 0; top: 0;
+  border-right: 2px solid #bbb;
+
+  z-index: 2;
+}
+
+#menu-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+  flex-grow: 0;
+  flex-shrink: 0;
+}
+
+#menu a {
+  color: #1567a2;
+}
+
+#menu.active {
+  display: flex;
+  opacity: 1;
+  z-index: 2;
+}
+
+#menu-pins {
+  flex-grow: 1;
+  display: none;
+}
+
+#menu-pins.active {
+  display: block;
+}
+
+#menu-pins-list {
+  margin: 0;
+  padding: 0;
+  counter-reset: pins-counter;
+}
+
+#menu-pins-list > li:before {
+  content: counter(pins-counter);
+  counter-increment: pins-counter;
+  display: inline-block;
+  width: 25px;
+  text-align: center;
+  border: 1px solid #bbb;
+  padding: 2px;
+  margin: 4px;
+  box-sizing: border-box;
+  line-height: 1em;
+  background-color: #ccc;
+  border-radius: 4px;
+}
+#menu-toc > ol {
+  padding: 0;
+  flex-grow: 1;
+}
+
+#menu-toc > ol li {
+  padding: 0;
+}
+
+#menu-toc > ol , #menu-toc > ol ol {
+  list-style-type: none;
+  margin: 0;
+  padding: 0;
+}
+
+#menu-toc > ol ol {
+  padding-left: 0.75em;
+}
+
+#menu-toc li {
+  text-overflow: ellipsis;
+  overflow: hidden;
+  white-space: nowrap;
+}
+
+#menu-toc .item-toggle {
+  display: inline-block;
+  transform: rotate(-45deg) translate(-5px, -5px);
+  transition: transform 0.1s ease;
+  text-align: center;
+  width: 20px;
+
+  color: #aab;
+
+  -webkit-touch-callout: none;
+  -webkit-user-select: none;
+  -khtml-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;;
+
+  cursor: pointer;
+}
+
+#menu-toc .item-toggle-none {
+  display: inline-block;
+  width: 20px;
+}
+
+#menu-toc li.active > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li > ol {
+  display: none;
+}
+
+#menu-toc li.active > ol {
+  display: block;
+}
+
+#menu-toc li.revealed > a {
+  background-color: #bbb;
+  font-weight: bold;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed-leaf> a {
+  color: #206ca7;
+  /*
+  background-color: #222;
+  color: #c6d8e4;
+  */
+}
+
+#menu-toc li.revealed > .item-toggle {
+  transform: rotate(45deg) translate(-5px, -5px);
+}
+
+#menu-toc li.revealed > ol {
+  display: block;
+}
+
+#menu-toc li > a {
+  padding: 2px 5px;
+}
+
+#menu > * {
+  margin-bottom: 5px;
+}
+
+.menu-pane-header {
+  padding: 0 5px;
+  text-transform: uppercase;
+  background-color: #aaa;
+  color: #335;
+  font-weight: bold;
+  letter-spacing: 2px;
+  flex-grow: 0;
+  flex-shrink: 0;
+  font-size: 0.8em;
+}
+
+#menu-toc {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  overflow: hidden;
+  flex-grow: 1;
+}
+
+#menu-toc ol.toc {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#menu-search {
+  position: relative;
+  flex-grow: 0;
+  flex-shrink: 0;
+  width: 100%;
+  
+  display: flex;
+  flex-direction: column;
+  
+  max-height: 300px;
+}
+
+#menu-trace-list {
+  display: none;
+}
+
+#menu-search-box {
+  box-sizing: border-box;
+  display: block;
+  width: 100%;
+  margin: 5px 0 0 0;
+  font-size: 1em;
+  padding: 2px;
+  background-color: #bbb;
+  border: 1px solid #999;
+}
+
+#menu-search-results {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+li.menu-search-result-clause:before {
+    content: 'clause';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+li.menu-search-result-op:before {
+    content: 'op';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%;
+}
+
+li.menu-search-result-prod:before {
+    content: 'prod';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+
+li.menu-search-result-term:before {
+    content: 'term';
+    width: 40px;
+    display: inline-block;
+    text-align: right;
+    padding-right: 1ex;
+    color: #666;
+    font-size: 75%
+}
+
+#menu-search-results ul {
+  padding: 0 5px;
+  margin: 0;
+}
+
+#menu-search-results li {
+  white-space: nowrap;
+  text-overflow: ellipsis;
+}
+
+
+#menu-trace-list {
+  counter-reset: item;
+  margin: 0 0 0 20px;
+  padding: 0;
+}
+#menu-trace-list li {
+  display: block;
+  white-space: nowrap;
+}
+
+#menu-trace-list li .secnum:after {
+  content: " ";
+}
+#menu-trace-list li:before {
+    content: counter(item) " ";
+    background-color: #222;
+    counter-increment: item;
+    color: #999;
+    width: 20px;
+    height: 20px;
+    line-height: 20px;
+    display: inline-block;
+    text-align: center;
+    margin: 2px 4px 2px 0;
+}
+
+@media (max-width: 1000px) {
+  body {
+    margin: 0;
+    display: block;
+  }
+
+  #menu {
+    display: none;
+    padding-top: 3em;
+    width: 450px;
+  }
+
+  #menu.active {
+    position: fixed;
+    height: 100%;
+    left: 0;
+    top: 0;
+    right: 300px;
+  }
+
+  #menu-toggle {
+    visibility: visible;
+  }
+
+  #spec-container {
+    padding: 0 5px;
+  }
+
+  #references-pane-spacer {
+    display: none;
+  }
+}
+
+@media only screen and (max-width: 800px) {
+  #menu {
+    width: 100%;
+  }
+
+  h1 .secnum:empty {
+    margin: 0; padding: 0;
+  }
+}
+
+
+/* Toolbox */
+.toolbox {
+	position: absolute;
+	background: #ddd;
+	border: 1px solid #aaa;
+  display: none;
+  color: #eee;
+  padding: 5px;
+  border-radius: 3px;
+}
+
+.toolbox.active {
+  display: inline-block;
+}
+
+.toolbox a {
+  text-decoration: none;
+  padding: 0 5px;
+}
+
+.toolbox a:hover {
+  text-decoration: underline;
+}
+
+.toolbox:after, .toolbox:before {
+	top: 100%;
+	left: 15px;
+	border: solid transparent;
+	content: " ";
+	height: 0;
+	width: 0;
+	position: absolute;
+	pointer-events: none;
+}
+
+.toolbox:after {
+	border-color: rgba(0, 0, 0, 0);
+	border-top-color: #ddd;
+	border-width: 10px;
+	margin-left: -10px;
+}
+.toolbox:before {
+	border-color: rgba(204, 204, 204, 0);
+	border-top-color: #aaa;
+	border-width: 12px;
+	margin-left: -12px;
+}
+
+#references-pane-container {
+  position: fixed;
+  bottom: 0;
+  left: 0;
+  right: 0;
+  height: 250px;
+  display: none;
+  background-color: #ddd;
+  z-index: 1;
+}
+
+#references-pane-table-container {
+  overflow-x: hidden;
+  overflow-y: auto;
+}
+
+#references-pane-spacer {
+  flex-basis: 33%;
+  max-width: 500px;
+}
+
+#references-pane {
+  flex-grow: 1;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+#references-pane-container.active {
+  display: flex;
+}
+
+#references-pane-close:after {
+  content: '✖';
+  float: right;
+  cursor: pointer;
+}
+
+#references-pane table tr td:first-child {
+  text-align: right;
+  padding-right: 5px;
+}
+
+@media print {
+  #menu-toggle {
+    display: none; 
+  }
+}
+</style></head><body><div id="menu-toggle">☰</div><div id="menu-spacer"></div><div id="menu"><div id="menu-search"><input type="text" id="menu-search-box" placeholder="Search..."><div id="menu-search-results" class="inactive"></div></div><div id="menu-pins"><div class="menu-pane-header">Pins</div><ul id="menu-pins-list"></ul></div><div class="menu-pane-header">Table of Contents</div><div id="menu-toc"><ol class="toc"><li><span class="item-toggle">◢</span><a href="#locales-currencies-tz" title="Identification of Locales, Currencies, Time Zones, and Measurement Units"><span class="secnum">1</span> Identification of Locales, Currencies, Time Zones, and Measurement Units</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-case-sensitivity-and-case-mapping" title="Case Sensitivity and Case Mapping"><span class="secnum">1.1</span> Case Sensitivity and Case Mapping</a></li><li><span class="item-toggle">◢</span><a href="#sec-language-tags" title="Language Tags"><span class="secnum">1.2</span> Language Tags</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-unicode-locale-extension-sequences" title="Unicode Locale Extension Sequences"><span class="secnum">1.2.1</span> Unicode Locale Extension Sequences</a></li><li><span class="item-toggle-none"></span><a href="#sec-isstructurallyvalidlanguagetag" title="IsStructurallyValidLanguageTag ( locale )"><span class="secnum">1.2.2</span> IsStructurallyValidLanguageTag ( <var>locale</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-canonicalizelanguagetag" title="CanonicalizeLanguageTag ( locale )"><span class="secnum">1.2.3</span> CanonicalizeLanguageTag ( <var>locale</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-defaultlocale" title="DefaultLocale ()"><span class="secnum">1.2.4</span> DefaultLocale ()</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-currency-codes" title="Currency Codes"><span class="secnum">1.3</span> Currency Codes</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-iswellformedcurrencycode" title="IsWellFormedCurrencyCode ( currency )"><span class="secnum">1.3.1</span> IsWellFormedCurrencyCode ( <var>currency</var> )</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-time-zone-names" title="Time Zone Names"><span class="secnum">1.4</span> Time Zone Names</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-isvalidtimezonename" title="IsValidTimeZoneName ( timeZone )"><span class="secnum">1.4.1</span> IsValidTimeZoneName ( <var>timeZone</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-canonicalizetimezonename" title="CanonicalizeTimeZoneName"><span class="secnum">1.4.2</span> CanonicalizeTimeZoneName</a></li><li><span class="item-toggle-none"></span><a href="#sec-defaulttimezone" title="DefaultTimeZone ()"><span class="secnum">1.4.3</span> DefaultTimeZone ()</a></li></ol></li><li><span class="item-toggle">◢</span><a href="#sec-measurement-unit-identifiers" title="Measurement Unit Identifiers"><span class="secnum">1.5</span> Measurement Unit Identifiers</a><ol class="toc"><li><span class="item-toggle-none"></span><a href="#sec-iswellformedunitidentifier" title="IsWellFormedUnitIdentifier ( unitIdentifier )"><span class="secnum">1.5.1</span> IsWellFormedUnitIdentifier ( <var>unitIdentifier</var> )</a></li><li><span class="item-toggle-none"></span><a href="#sec-issanctionedsimpleunitidentifier" title="IsSanctionedSimpleUnitIdentifier ( unitIdentifier )"><span class="secnum">1.5.2</span> IsSanctionedSimpleUnitIdentifier ( <var>unitIdentifier</var> )</a></li></ol></li></ol></li></ol></div></div><div id="spec-container"><emu-clause id="locales-currencies-tz">
+  <h1 class="first"><span class="secnum">1</span>Identification of Locales, Currencies, Time Zones, and Measurement Units</h1>
+
+  <p>
+    This clause describes the String values used in the ECMAScript 2019 Internationalization API Specification to identify locales, currencies, time zones, and measurement units.
+  
+  </p>
+
+  <emu-clause id="sec-case-sensitivity-and-case-mapping">
+    <h1><span class="secnum">1.1</span>Case Sensitivity and Case Mapping</h1>
+
+    <p>
+      The String values used to identify locales, currencies, and time zones are interpreted in a case-insensitive manner, treating the Unicode Basic Latin characters <code>"A"</code> to <code>"Z"</code> (U+0041 to U+005A) as equivalent to the corresponding Basic Latin characters <code>"a"</code> to <code>"z"</code> (U+0061 to U+007A). No other case folding equivalences are applied. When mapping to upper case, a mapping shall be used that maps characters in the range <code>"a"</code> to <code>"z"</code> (U+0061 to U+007A) to the corresponding characters in the range <code>"A"</code> to <code>"Z"</code> (U+0041 to U+005A) and maps no other characters to the latter range.
+    
+    </p>
+
+    <p>
+      EXAMPLES <code>"ß"</code> (U+00DF) must not match or be mapped to <code>"SS"</code> (U+0053, U+0053). <code>"ı"</code> (U+0131) must not match or be mapped to <code>"I"</code> (U+0049).
+    
+    </p>
+  </emu-clause>
+
+  <emu-clause id="sec-language-tags">
+    <h1><span class="secnum">1.2</span>Language Tags</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies locales using language tags as defined by IETF BCP 47 (RFCs 5646 and 4647 or their successors), which may include extensions such as those registered through RFC 6067. Their canonical form is specified in RFC 5646 section 4.5 or its successor.
+    
+    </p>
+
+    <p>
+      BCP 47 language tags that meet those validity criteria of RFC 5646 section 2.2.9 that can be verified without reference to the IANA Language Subtag Registry are considered structurally valid. All structurally valid language tags are valid for use with the APIs defined by this standard. However, the set of locales and thus language tags that an implementation supports with adequate localizations is implementation dependent. The constructors Collator, NumberFormat, DateTimeFormat, and PluralRules map the language tags used in requests to locales supported by their respective implementations.
+    
+    </p>
+
+
+    <emu-clause id="sec-unicode-locale-extension-sequences">
+      <h1><span class="secnum">1.2.1</span>Unicode Locale Extension Sequences</h1>
+
+      <p>
+        This standard uses the term <code>"Unicode locale extension sequence"</code> for any substring of a language tag that is not part of a private use subtag sequence, starts with a separator <code>"-"</code> and the singleton <code>"u"</code>, and includes the maximum sequence of following non-singleton subtags and their preceding <code>"-"</code> separators.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-isstructurallyvalidlanguagetag" aoid="IsStructurallyValidLanguageTag">
+      <h1><span class="secnum">1.2.2</span>IsStructurallyValidLanguageTag ( <var>locale</var> )</h1>
+
+      <p>
+        The IsStructurallyValidLanguageTag abstract operation verifies that the <var>locale</var> argument (which must be a String value)
+      
+      </p>
+
+      <ul>
+        <li>represents a well-formed BCP 47 language tag as specified in RFC 5646 section 2.1, or successor,</li>
+        <li>does not include duplicate variant subtags, and</li>
+        <li>does not include duplicate singleton subtags.</li>
+      </ul>
+
+      <p>
+        The abstract operation returns true if <var>locale</var> can be generated from the ABNF grammar in section 2.1 of the RFC, starting with Language-Tag, and does not contain duplicate variant or singleton subtags (other than as a private use subtag). It returns false otherwise. Terminal value characters in the grammar are interpreted as the Unicode equivalents of the ASCII octet values given.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizelanguagetag" aoid="CanonicalizeLanguageTag">
+      <h1><span class="secnum">1.2.3</span>CanonicalizeLanguageTag ( <var>locale</var> )</h1>
+
+      <p>
+        The CanonicalizeLanguageTag abstract operation returns the canonical and case-regularized form of the <var>locale</var> argument (which must be a String value that is a structurally valid BCP 47 language tag as verified by the <emu-xref aoid="IsStructurallyValidLanguageTag" id="_ref_10"><a href="#sec-isstructurallyvalidlanguagetag">IsStructurallyValidLanguageTag</a></emu-xref> abstract operation).
+        A conforming implementation shall take the steps specified in RFC 5646 section 4.5, or successor, to bring the language tag into canonical form, and to regularize the case of the subtags. Furthermore, a conforming implementation shall not take the steps to bring a language tag into <code>"extlang form"</code>, nor shall it reorder variant subtags.
+      
+      </p>
+
+      <p>
+        The specifications for extensions to BCP 47 language tags, such as RFC 6067, may include canonicalization rules for the extension subtag sequences they define that go beyond the canonicalization rules of RFC 5646 section 4.5. Implementations are allowed, but not required, to apply these additional rules.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaultlocale" aoid="DefaultLocale">
+      <h1><span class="secnum">1.2.4</span>DefaultLocale ()</h1>
+
+      <p>
+        The DefaultLocale abstract operation returns a String value representing the structurally valid (<emu-xref href="#sec-isstructurallyvalidlanguagetag" id="_ref_0"><a href="#sec-isstructurallyvalidlanguagetag">1.2.2</a></emu-xref>) and  canonicalized (<emu-xref href="#sec-canonicalizelanguagetag" id="_ref_1"><a href="#sec-canonicalizelanguagetag">1.2.3</a></emu-xref>) BCP 47 language tag for the host environment's current locale.
+      
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-currency-codes">
+    <h1><span class="secnum">1.3</span>Currency Codes</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies currencies using 3-letter currency codes as defined by ISO 4217. Their canonical form is upper case.
+    
+    </p>
+
+    <p>
+      All well-formed 3-letter ISO 4217 currency codes are allowed. However, the set of combinations of currency code and language tag for which localized currency symbols are available is implementation dependent. Where a localized currency symbol is not available, the ISO 4217 currency code is used for formatting.
+    
+    </p>
+
+    <emu-clause id="sec-iswellformedcurrencycode" aoid="IsWellFormedCurrencyCode">
+      <h1><span class="secnum">1.3.1</span>IsWellFormedCurrencyCode ( <var>currency</var> )</h1>
+
+      <p>
+        The IsWellFormedCurrencyCode abstract operation verifies that the <var>currency</var> argument (which must be a String value) represents a well-formed 3-letter ISO currency code. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>normalized</var> be the result of mapping <var>currency</var> to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_2"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>.</li><li>If the number of elements in <var>normalized</var> is not 3, return <emu-val>false</emu-val>.</li><li>If <var>normalized</var> contains any character that is not in the range <code>"A"</code> to <code>"Z"</code> (U+0041 to U+005A), return <emu-val>false</emu-val>.</li><li>Return <emu-val>true</emu-val>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-time-zone-names">
+    <h1><span class="secnum">1.4</span>Time Zone Names</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies time zones using the Zone and Link names of the IANA Time Zone Database. Their canonical form is the corresponding Zone name in the casing used in the IANA Time Zone Database.
+    
+    </p>
+
+    <p>
+      All registered Zone and Link names are allowed. Implementations must recognize all such names, and use best available current and historical information about their offsets from UTC and their daylight saving time rules in calculations. However, the set of combinations of time zone name and language tag for which localized time zone names are available is implementation dependent.
+    
+    </p>
+
+    <emu-clause id="sec-isvalidtimezonename" aoid="IsValidTimeZoneName">
+      <h1><span class="secnum">1.4.1</span>IsValidTimeZoneName ( <var>timeZone</var> )</h1>
+
+      <p>
+        The IsValidTimeZoneName abstract operation verifies that the <var>timeZone</var> argument (which must be a String value) represents a valid Zone or Link name of the IANA Time Zone Database.
+      
+      </p>
+      <p>
+        The abstract operation returns true if <var>timeZone</var>, converted to upper case as described in  <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_3"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>, is equal to one of the Zone or Link names of the IANA Time Zone Database, converted to upper case as described in  <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_4"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>. It returns false otherwise.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-canonicalizetimezonename" aoid="CanonicalizeTimeZoneName">
+      <h1><span class="secnum">1.4.2</span>CanonicalizeTimeZoneName</h1>
+
+      <p>
+        The CanonicalizeTimeZoneName abstract operation returns the canonical and case-regularized form of the <var>timeZone</var> argument (which must be a String value that is a valid time zone name as verified by the <emu-xref aoid="IsValidTimeZoneName" id="_ref_11"><a href="#sec-isvalidtimezonename">IsValidTimeZoneName</a></emu-xref> abstract operation). The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>Let <var>ianaTimeZone</var> be the Zone or Link name of the IANA Time Zone Database such that <var>timeZone</var>, converted to  upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_5"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>, is equal to <var>ianaTimeZone</var>, converted to upper case as described in <emu-xref href="#sec-case-sensitivity-and-case-mapping" id="_ref_6"><a href="#sec-case-sensitivity-and-case-mapping">1.1</a></emu-xref>.</li><li>If <var>ianaTimeZone</var> is a Link name, let <var>ianaTimeZone</var> be the corresponding Zone name as specified in the <code>"backward"</code> file of the IANA Time Zone Database.</li><li>If <var>ianaTimeZone</var> is <code>"Etc/UTC"</code> or <code>"Etc/GMT"</code>, return <code>"UTC"</code>.</li><li>Return <var>ianaTimeZone</var>.
+      </li></ol></emu-alg>
+
+      <p>
+        The Intl.DateTimeFormat constructor allows this time zone name; if the time zone is not specified, the host environment's current time zone is used. Implementations shall support UTC and the host environment's current time zone (if different from UTC) in formatting.
+      
+      </p>
+    </emu-clause>
+
+    <emu-clause id="sec-defaulttimezone" aoid="DefaultTimeZone">
+      <h1><span class="secnum">1.4.3</span>DefaultTimeZone ()</h1>
+
+      <p>
+        The DefaultTimeZone abstract operation returns a String value representing the valid (<emu-xref href="#sec-isvalidtimezonename" id="_ref_7"><a href="#sec-isvalidtimezonename">1.4.1</a></emu-xref>) and canonicalized (<emu-xref href="#sec-canonicalizetimezonename" id="_ref_8"><a href="#sec-canonicalizetimezonename">1.4.2</a></emu-xref>) time zone name for the host environment's current time zone.
+      
+      </p>
+    </emu-clause>
+
+  </emu-clause>
+
+  <emu-clause id="sec-measurement-unit-identifiers">
+    <h1><span class="secnum">1.5</span>Measurement Unit Identifiers</h1>
+
+    <p>
+      The ECMAScript 2019 Internationalization API Specification identifies measurement units using a  <em>core unit identifier</em> as defined by Unicode Technical Standard #35, Part 2, Section 6. Their canonical form is a string containing all lowercase letters with zero or more hyphens.
+    
+    </p>
+
+    <p>
+      Only a limited set of core unit identifiers are allowed.  An illegal core unit identifier results in a RangeError.
+    
+    </p>
+
+    <emu-clause id="sec-iswellformedunitidentifier" aoid="IsWellFormedUnitIdentifier">
+      <h1><span class="secnum">1.5.1</span>IsWellFormedUnitIdentifier ( <var>unitIdentifier</var> )</h1>
+
+      <p>
+        The IsWellFormedUnitIdentifier abstract operation verifies that the <var>unitIdentifier</var> argument (which must be a String value) represents a well-formed core unit identifier as defined in UTS #35, Part 2, Section 6. In addition to obeying the UTS #35 core unit identifier syntax, <var>unitIdentifier</var> must be one of the identifiers sanctioned by UTS #35 or be a compound unit composed of two sanctioned simple units. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If the result of <emu-xref aoid="IsSanctionedSimpleUnitIdentifier" id="_ref_12"><a href="#sec-issanctionedsimpleunitidentifier">IsSanctionedSimpleUnitIdentifier</a></emu-xref>(<var>unitIdentifier</var>) is <emu-val>true</emu-val>, then<ol><li>Return <emu-val>true</emu-val>.</li></ol></li><li>If the substring <code>"-per-"</code> does not occur exactly once in <var>unitIdentifier</var>, then<ol><li>Return <emu-val>false</emu-val>.</li></ol></li><li>Let <var>numerator</var> be the substring of <var>unitIdentifier</var> from the beginning to just before <code>"-per-"</code>.</li><li>If the result of <emu-xref aoid="IsSanctionedSimpleUnitIdentifier" id="_ref_13"><a href="#sec-issanctionedsimpleunitidentifier">IsSanctionedSimpleUnitIdentifier</a></emu-xref>(<var>numerator</var>) is <emu-val>false</emu-val>, then<ol><li>Return <emu-val>false</emu-val>.</li></ol></li><li>Let <var>denominator</var> be the substring of <var>unitIdentifier</var> from just after <code>"-per-"</code> to the end.</li><li>If the result of <emu-xref aoid="IsSanctionedSimpleUnitIdentifier" id="_ref_14"><a href="#sec-issanctionedsimpleunitidentifier">IsSanctionedSimpleUnitIdentifier</a></emu-xref>(<var>denominator</var>) is <emu-val>false</emu-val>, then<ol><li>Return <emu-val>false</emu-val>.</li></ol></li><li>Return <emu-val>true</emu-val>.
+      </li></ol></emu-alg>
+    </emu-clause>
+
+    <emu-clause id="sec-issanctionedsimpleunitidentifier" aoid="IsSanctionedSimpleUnitIdentifier">
+      <h1><span class="secnum">1.5.2</span>IsSanctionedSimpleUnitIdentifier ( <var>unitIdentifier</var> )</h1>
+
+      <p>
+        The IsSanctionedSimpleUnitIdentifier abstract operation verifies that the given core unit identifier is among the simple units sanctioned in the current version of the ECMAScript standard, a subset of the Validity Data as described in UTS #35, Part 1, Section 3.11; the list may grow over time. As discussed in UTS #35, a simple unit is one that does not have a numerator and denominator. The following steps are taken:
+      
+      </p>
+
+      <emu-alg><ol><li>If <var>unitIdentifier</var> is listed in <emu-xref href="#table-sanctioned-simple-unit-identifiers" id="_ref_9"><a href="#table-sanctioned-simple-unit-identifiers">Table 1</a></emu-xref> below, return <emu-val>true</emu-val>.</li><li>Else, Return <emu-val>false</emu-val>.
+      </li></ol></emu-alg>
+
+      <emu-table id="table-sanctioned-simple-unit-identifiers"><figure><figcaption>Table 1: Simple units sanctioned for use in ECMAScript</figcaption>
+        
+        <table class="real-table">
+          <thead>
+            <tr>
+              <th>Simple Unit</th>
+            </tr>
+          </thead>
+          <tbody><tr><td>acre</td></tr>
+          <tr><td>bit</td></tr>
+          <tr><td>byte</td></tr>
+          <tr><td>celsius</td></tr>
+          <tr><td>centimeter</td></tr>
+          <tr><td>day</td></tr>
+          <tr><td>degree</td></tr>
+          <tr><td>fahrenheit</td></tr>
+          <tr><td>fluid-ounce</td></tr>
+          <tr><td>foot</td></tr>
+          <tr><td>gallon</td></tr>
+          <tr><td>gigabit</td></tr>
+          <tr><td>gigabyte</td></tr>
+          <tr><td>gram</td></tr>
+          <tr><td>hectare</td></tr>
+          <tr><td>hour</td></tr>
+          <tr><td>inch</td></tr>
+          <tr><td>kilobit</td></tr>
+          <tr><td>kilobyte</td></tr>
+          <tr><td>kilogram</td></tr>
+          <tr><td>kilometer</td></tr>
+          <tr><td>liter</td></tr>
+          <tr><td>megabit</td></tr>
+          <tr><td>megabyte</td></tr>
+          <tr><td>meter</td></tr>
+          <tr><td>mile</td></tr>
+          <tr><td>mile-scandinavian</td></tr>
+          <tr><td>millimeter</td></tr>
+          <tr><td>milliliter</td></tr>
+          <tr><td>millisecond</td></tr>
+          <tr><td>minute</td></tr>
+          <tr><td>month</td></tr>
+          <tr><td>ounce</td></tr>
+          <tr><td>percent</td></tr>
+          <tr><td>petabyte</td></tr>
+          <tr><td>pound</td></tr>
+          <tr><td>second</td></tr>
+          <tr><td>stone</td></tr>
+          <tr><td>terabit</td></tr>
+          <tr><td>terabyte</td></tr>
+          <tr><td>week</td></tr>
+          <tr><td>yard</td></tr>
+          <tr><td>year</td></tr>
+        </tbody></table>
+      </figure></emu-table>
+    </emu-clause>
+  </emu-clause>
+
+</emu-clause>
+</div></body>
\ No newline at end of file
diff --git a/spec.emu b/spec.emu
deleted file mode 100644
index 5cf3229..0000000
--- a/spec.emu
+++ /dev/null
@@ -1,23 +0,0 @@
-<!doctype html>
-<meta charset="utf8">
-<link rel="stylesheet" href="./spec.css">
-<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/highlight.js/8.4/styles/github.min.css">
-<script src="./spec.js"></script>
-<pre class="metadata">
-title: Proposal Title Goes Here
-stage: -1
-contributors: Your Name Goes Here
-</pre>
-
-<emu-clause id="sec-demo-clause">
-  <h1>This is an emu-clause</h1>
-  <p>This is an algorithm:</p>
-  <emu-alg>
-    1. Let _proposal_ be *undefined*.
-    1. If IsAccepted(_proposal_),
-      1. Let _stage_ be *0*.
-    1. Else,
-      1. Let _stage_ be *-1*.
-    1. Return ? ToString(_proposal_).
-  </emu-alg>
-</emu-clause>