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Document
Date
Status
IPR
AD/Shepherd
RFCs (2 hits)
3 pages
RFC 2119
Key words for use in RFCs to Indicate Requirement Levels
Errata
1997-03
Best Current Practice RFC
Updated by
rfc8174
Part of
BCP 14
4 pages
RFC 8174
Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words
Errata
2017-05
Best Current Practice RFC
Part of
BCP 14
Ben Campbell