Internet & networking · 1997
RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Request for Comments 2119 · BCP 14 · Best Current Practice · March 1997
The Best Current Practice that defines MUST, SHOULD, MAY and related key words for requirement levels in specifications.
Read the text The whole poster as a web page
- Print from
- A3
- License
- Distribution unlimited
- Source
- rfc-editor.org
- Retrieved
- 27 September 2026
- Language
- English
- Rights holder
- Scott Bradner, 1997
Theme
Download
- A seriesPrints at A0, A1, A2 or A3
- 50 × 70 cm
- 60 × 80 cm
US formats
Each one laid out on its own. At Letter and Tabloid the body of a long text prints under 8 pt: they suit short texts, or a copy to read up close.
- Letter8.5 × 11 in
- Tabloid11 × 17 in
- 18 × 24 in
- 24 × 36 in
Print it Which size, paper or aluminium, which file to send
Every Internet & networking poster, in the A, 50 × 70 and 60 × 80 cm formats and every theme, as one zip from the latest release, and in the US formats as another.
Print from A3: the smallest A size at which the body text is at least 8 pt.
Wallpaper
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Edition
RFC Editor plain-text edition, complete. The heading block and the status of the memo are set as the header of the poster; page headers and footers are left out; the misspelling “retransmisssions” of the original is kept.
Rights
Distribution of this memo is unlimited.
RFC 2119 itself carries no copyright notice. The RFC Editor also states: “All RFCs may be freely reproduced and translated (unmodified).” (https://www.rfc-editor.org/faq/)
