Technical Summary
This is ABNF. We use it in our RFCs.
The implementation report is here:
http://ietf.org/IESG/Implementations/RFC4234_implem.txt
Working Group Summary
This was not done in a WG although it was reviewed by several
individuals: Bill Fenner, Frank Ellerman, Julian Reschke, Steven
Legg, Alexey Melnikov.
Protocol Quality
Lisa Dusseault reviewed this for the IESG.