diff --git a/spec.html b/spec.html
index e7eeb3dbf2d..ec0314bb497 100644
--- a/spec.html
+++ b/spec.html
@@ -9636,7 +9636,7 @@ <h1>
     <emu-clause id="sec-runtime-semantics-iteratorbindinginitialization" oldids="sec-destructuring-binding-patterns-runtime-semantics-iteratorbindinginitialization,sec-function-definitions-runtime-semantics-iteratorbindinginitialization,sec-arrow-function-definitions-runtime-semantics-iteratorbindinginitialization,sec-async-arrow-function-definitions-IteratorBindingInitialization" type="sdo">
       <h1>
         Runtime Semantics: IteratorBindingInitialization (
-          _iteratorRecord_: unknown,
+          _iteratorRecord_: an Iterator Record,
           _environment_: unknown,
         ): either a normal completion containing ~unused~ or an abrupt completion
       </h1>
@@ -20860,7 +20860,7 @@ <h1>
       <emu-clause id="sec-runtime-semantics-iteratordestructuringassignmentevaluation" type="sdo">
         <h1>
           Runtime Semantics: IteratorDestructuringAssignmentEvaluation (
-            _iteratorRecord_: unknown,
+            _iteratorRecord_: an Iterator Record,
           ): either a normal completion containing ~unused~ or an abrupt completion
         </h1>
         <dl class="header">
@@ -22125,7 +22125,7 @@ <h1>
           ForIn/OfBodyEvaluation (
             _lhs_: a Parse Node,
             _stmt_: a |Statement| Parse Node,
-            _iteratorRecord_: unknown,
+            _iteratorRecord_: an Iterator Record,
             _iterationKind_: unknown,
             _lhsKind_: ~assignment~, ~varBinding~, or ~lexicalBinding~,
             _labelSet_: a List of Strings,
@@ -43461,7 +43461,7 @@ <h1>Async-from-Sync Iterator Objects</h1>
       <emu-clause id="sec-createasyncfromsynciterator" type="abstract operation">
         <h1>
           CreateAsyncFromSyncIterator (
-            _syncIteratorRecord_: unknown,
+            _syncIteratorRecord_: an Iterator Record,
           ): an Iterator Record
         </h1>
         <dl class="header">
@@ -44138,7 +44138,7 @@ <h1>
         <emu-clause id="sec-performpromiseall" type="abstract operation">
           <h1>
             PerformPromiseAll (
-              _iteratorRecord_: unknown,
+              _iteratorRecord_: an Iterator Record,
               _constructor_: a constructor,
               _resultCapability_: a PromiseCapability Record,
               _promiseResolve_: a function object,
@@ -44226,7 +44226,7 @@ <h1>Promise.allSettled ( _iterable_ )</h1>
         <emu-clause id="sec-performpromiseallsettled" type="abstract operation">
           <h1>
             PerformPromiseAllSettled (
-              _iteratorRecord_: unknown,
+              _iteratorRecord_: an Iterator Record,
               _constructor_: a constructor,
               _resultCapability_: a PromiseCapability Record,
               _promiseResolve_: a function object,
@@ -44353,7 +44353,7 @@ <h1>Promise.any ( _iterable_ )</h1>
         <emu-clause id="sec-performpromiseany" type="abstract operation">
           <h1>
             PerformPromiseAny (
-              _iteratorRecord_: unknown,
+              _iteratorRecord_: an Iterator Record,
               _constructor_: a constructor,
               _resultCapability_: a PromiseCapability Record,
               _promiseResolve_: a function object,
@@ -44452,7 +44452,7 @@ <h1>Promise.race ( _iterable_ )</h1>
         <emu-clause id="sec-performpromiserace" type="abstract operation">
           <h1>
             PerformPromiseRace (
-              _iteratorRecord_: unknown,
+              _iteratorRecord_: an Iterator Record,
               _constructor_: a constructor,
               _resultCapability_: a PromiseCapability Record,
               _promiseResolve_: a function object,