. . . . . . . . . . . . . . . . . . . . . . . . . . "2002-07-13"^^ . . . . . "RFC 3066"@en . . . . . . . . . . . . . . . . . "RFC 3066 has been obsoleted by RFC 4646."@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "The set of tags constructed according to RFC 3066 for the identification of languages."@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .