Appendix C. Imported ABNF

The following core rules are included by reference, as defined in Appendix B.1 of [RFC5234]: ALPHA (letters), CR (carriage return), CRLF (CR LF), CTL (controls), DIGIT (decimal 0-9), DQUOTE (double quote), HEXDIG (hexadecimal 0-9/A-F/a-f), LF (line feed), OCTET (any 8-bit sequence of data), SP (space), and VCHAR (any visible US-ASCII character).

Note that all rules derived from token are to be compared case-insensitively, like range-unit and acceptable-ranges.

The rules below are defined in [RFC7230]:

OWS = <OWS, see [RFC7230], Section 3.2>
token = <token, see [RFC7230], Section 3.2>

The rules below are defined in other parts:

HTTP-date = <HTTP-date, see [RFC7231], Section 7.1.1.1>
entity-tag = <entity-tag, see [RFC7232], Section 2.3>

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