ABNF.dcontent Field

[This is preliminary documentation and subject to change.]

RFC 2822 Section 3.4.1

public const string dcontent = "(?:[\x01-\x08\x0B\x0C\x0E-\x1F\x7F\x21-\x5A\x5E-\x7E]|[\x5C][\x01-\x09\x0B\x0C\x0E-\x7F])";