Comprehensive Core Rules and References for ABNF

The information below is for an old version of the document
Document Type Expired Internet-Draft (individual in art area)
Last updated 2016-09-12 (latest revision 2016-03-11)
Stream IETF
Intended RFC status Proposed Standard
Expired & archived
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Stream WG state (None)
Document shepherd No shepherd assigned
IESG IESG state Expired (IESG: Dead)
Consensus Boilerplate Unknown
Telechat date
Responsible AD Alexey Melnikov
Send notices to (None)

This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document extends the base definition of ABNF (Augmented Backus- Naur Form) to include comprehensive support for certain symbols related to ASCII, and defines a reference syntax.


Sean Leonard (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)