Augmented BNF for Syntax Specifications: ABNF, November 1997
- Canonical URL:
- File formats:
- PROPOSED STANDARD
- Obsoleted by:
- RFC 4234
- D. Crocker, Ed.
- drums (app)
Discuss this RFC: Send questions or comments to email@example.com
In the early days of the Arpanet, each specification contained its own definition of ABNF. This included the email specifications, RFC733 and then RFC822 which have come to be the common citations for defining ABNF. The current document separates out that definition, to permit selective reference. Predictably, it also provides some modifications and enhancements. [STANDARDS-TRACK]
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 4844.