2. Notational Conventions

このページは RFC 9982 の該当節を要約し, JSContact, vCard, IANA registry の重要事項を保持します.

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" are interpreted as described in BCP 14 [RFC2119] [RFC8174] when they appear in all capitals.

ABNF definitions use the notation of [RFC5234]. ABNF rules not defined here are defined in [RFC5234], for example CRLF, WSP, DQUOTE, VCHAR, ALPHA, and DIGIT, or in [RFC6350].