Appendix B. 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).
The rules below are defined in [RFC7230]:
BWS = <BWS, see [RFC7230], Section 3.2>
OWS = <OWS, see [RFC7230], Section 3.2>
quoted-string = <quoted-string, see [RFC7230], Section 3.2>
token = <token, see [RFC7230], Section 3.2>