diff --git a/misc/aspell_dict b/misc/aspell_dict
index d1008027c311..17059ffc7b59 100644
--- a/misc/aspell_dict
+++ b/misc/aspell_dict
@@ -332,7 +332,6 @@ changelog
 datapipe
 queryClientRoot
 Pre
-CLOSETRY
 createClient
 dataflow
 BIP
diff --git a/scripts/make_pdf.sh b/scripts/make_pdf.sh
index 0c984b68d1f2..98ecb85e182e 100755
--- a/scripts/make_pdf.sh
+++ b/scripts/make_pdf.sh
@@ -7,4 +7,5 @@ find $DIR -type f -name "*.md" -exec cp {} {}.xfm \;
 find $DIR -type f -name "*.md.xfm" -exec awk -i inplace '/## Backwards Compatibility/ {exit} {print}' {} \;
 find $DIR -type f -name "*.png" -exec cp {} . \;
 pandoc --pdf-engine=xelatex --template eisvogel --filter pandoc-include --mathjax --toc --number-sections -o spec.pdf spec.pdc
+find $DIR -type f -name "*.md.xfm" -exec rm {} \;
 rm *.png
diff --git a/spec.pdf b/spec.pdf
index e13dd59fa5a1..bfc6a3d56fc7 100644
Binary files a/spec.pdf and b/spec.pdf differ
diff --git a/spec/ics-002-consensus-verification/README.md b/spec/ics-002-consensus-verification/README.md
index a0c51893553b..626c6d6d2fba 100644
--- a/spec/ics-002-consensus-verification/README.md
+++ b/spec/ics-002-consensus-verification/README.md
@@ -162,9 +162,13 @@ state transitions, or other evidence as defined by the consensus algorithm.
 The `MisbehaviourPredicate` type is defined as
 
 ```typescript
-type MisbehaviourPredicate = (ConsensusState, bytes) => bool
+type MisbehaviourPredicate = (ConsensusState, bytes) => (bool)
 ```
 
+The boolean returned indicates whether the evidence of misbehaviour was valid.
+The client MUST also mutate internal state to mark appropriate heights which
+were previously considered valid invalid, according to the nature of the misbehaviour.
+
 More details about `MisbehaviourPredicate`s can be found in [CONSENSUS.md](./CONSENSUS.md)
 
 ### Sub-protocols
@@ -285,7 +289,6 @@ method can be introduced in the future versions.
 function freezeClient(identifier: Identifier, evidence: bytes) {
   consensusState = get(consensusStateKey(identifier))
   assert(consensusState.misbehaviourPredicate(evidence))
-  set(frozenKey(id), true)
 }
 ```
 
diff --git a/spec/ics-003-connection-semantics/README.md b/spec/ics-003-connection-semantics/README.md
index e9b2f55006e6..e59b3a7349df 100644
--- a/spec/ics-003-connection-semantics/README.md
+++ b/spec/ics-003-connection-semantics/README.md
@@ -303,11 +303,10 @@ The closing handshake sub-protocol defines three datagrams: *ConnCloseInit*, *Co
 
 A correct protocol execution flows as follows (note that all calls are made through modules per ICS 25):
 
-| Initiator | Datagram          | Chain acted upon | Prior state (A, B) | Post state (A, B)  |
-| --------- | ----------------- | ---------------- | ------------------ | ------------------ |
-| Actor     | `ConnCloseInit`   | A                | (OPEN, OPEN)       | (CLOSETRY, OPEN)   |
-| Relayer   | `ConnCloseTry`    | B                | (CLOSETRY, OPEN)   | (CLOSETRY, CLOSED) |
-| Relayer   | `ConnCloseAck`    | A                | (CLOSETRY, CLOSED) | (CLOSED, CLOSED)   |
+| Initiator | Datagram            | Chain acted upon | Prior state (A, B) | Post state (A, B) |
+| --------- | ------------------- | ---------------- | ------------------ | ----------------- |
+| Actor     | `ConnCloseInit`     | A                | (OPEN, OPEN)       | (CLOSED, OPEN)    |
+| Relayer   | `ConnCloseConfirm`  | B                | (CLOSED, OPEN)     | (CLOSED, CLOSED)  |
 
 *ConnCloseInit* initialises a close attempt on chain A.
 
diff --git a/spec/ics-004-channel-and-packet-semantics/README.md b/spec/ics-004-channel-and-packet-semantics/README.md
index 5759620f436f..59c7483ec717 100644
--- a/spec/ics-004-channel-and-packet-semantics/README.md
+++ b/spec/ics-004-channel-and-packet-semantics/README.md
@@ -6,7 +6,7 @@ category: ibc-core
 requires: 2, 3, 5, 23, 24
 author: Christopher Goes <cwgoes@tendermint.com>
 created: 2019-03-07
-modified: 2019-06-29
+modified: 2019-08-13
 ---
 
 ## Synopsis
@@ -790,6 +790,7 @@ Coming soon.
 4 July 2019 - Modifications for unordered channels & acknowledgements
 16 July 2019 - Alterations for multi-hop routing future compatibility
 29 July 2019 - Revisions to handle timeouts after connection closure
+13 August 2019 - Various edits
 
 ## Copyright