===== RFC8174 - Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words =====
[[dido:public:ra:xapend:xapend.b_stds:tech:ietf:start| return to the IETF Standards ]]

<table>
<caption>Data sheet for RFC8174 Ambiguity of Uppercase vs Lowercase in [[dido:public:ra:xapend:xapend.b_stds:tech:ietf:2119]] Key Words</caption>
| Title                      | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words |
| Acronym                    |  |
| Version                    | 2017 |
| Document Number            | RFC8174 |
| Release Date               | Month YYYY  |
| Reference                  | [[https://tools.ietf.org/html/rfc8174]] |
</table>

  : **Note**: The following is an excerpt from the official IETF RFC. It is provided here as a convenience and is not authoritative. Refer to the original document as the authoritative reference.

===== Abstract =====

  : //[[dido:public:ra:xapend:xapend.b_stds:tech:ietf:2119]] specifies common key words that may be used in protocol specifications.  This document aims to reduce the ambiguity by clarifying that only UPPERCASE usage of the key words have the defined special meanings.//
   
==== Introduction ====
  : //[[dido:public:ra:xapend:xapend.b_stds:tech:ietf:2119]] specifies common key words, such as "MUST", "SHOULD", and "MAY", that may be used in protocol specifications.  It says that the key words "are often capitalized," which has caused confusion about how to interpret non-capitalized words such as "must" and "should".//

  : //This document updates [[dido:public:ra:xapend:xapend.b_stds:tech:ietf:2119]] by clarifying that only UPPERCASE usage of the key words have the defined special meanings.  This document is part of BCP 14.//


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