Grammar

proposals/1640-event-id-as-hashes.md

@@ -85,10 +85,11 @@ illustrative example, and that the hashes are not correct):
 
 ## Changes to existing APIs
 
-All APIs that accept event IDs must accept event IDs of the new format.
+All APIs that accept event IDs must accept event IDs in the new format.
 
-For S2S API, whenever a server needs to parse an event they must either already
-no the room version *or* be told. There are separate MSCs to update APIs where
+For S2S API, whenever a server needs to parse an event from a request or
+response they must either already know the room version *or* be told the room
+version in the request/response. There are separate MSCs to update APIs where
 necessary.
 
 For C2S API, the only change clients will see are that the event IDs have