This draft specifies the BNF varient used in RSVP and related protocols. The authors correctly indicate that converting these BNF specifications to use ABNF or some other already documented BNF form would be a lot of work. So, I agree that we should document this BNF varient. However I believe that this document could benefit from an applicability statement describing when this reduced varient is appropriate. Examples of cases where this seems appropriate include when extending RSVP or related protocols; when designing a new protocol that shares messages, objects or mind-share with RSVP; or if this BNF varient has already been in use for the protocol. Much of the text discussing this is in the document, but I think it would be better phrased as an applicability statement. _______________________________________________ Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf