Review comments

draft-ietf-quic-tls.md

@@ -1250,9 +1250,9 @@ the version of QUIC defined in {{QUIC-TRANSPORT}} is used.
 
 The quic_transport_parameters extension is carried in the ClientHello and the
 EncryptedExtensions messages during the handshake. Endpoints MUST send the
-quic_transport_parameters extension; endpoints which receive ClientHello
-or EncryptedExtensions messages without the transport_parameters extension MUST
-terminate the TLS handshake with a fatal missing_extension alert.
+quic_transport_parameters extension; endpoints that receive ClientHello
+or EncryptedExtensions messages without the quic_transport_parameters extension MUST
+terminate the TLS handshake with a fatal missing_extension alert (an error of 0x16d).
 
 While the transport parameters are technically available prior to the completion
 of the handshake, they cannot be fully trusted until the handshake completes,
@@ -1261,8 +1261,8 @@ parameters will cause the handshake to fail.
 
 Endpoints MUST NOT send this extension in a TLS connection that does not use
 QUIC (such as the use of TLS with TCP defined in {{!TLS13}}).  A fatal
-unsupported_extension alert MUST be sent if this extension is received when the
-transport is not QUIC.
+unsupported_extension alert (an error of 0x16d) MUST be sent if this extension
+is received when the transport is not QUIC.
 
 
 ## Removing the EndOfEarlyData Message {#remove-eoed}