"Tags for Identifying Languages", Addison Phillips, Mark Davis, 29-Apr-08. ( bytes): This document describes the structure, content, construction, and semantics of language tags for use in cases where it is desirable to indicate the language used in an information object. It also describes how to register values for use in language tags and the creation of user-defined extensions for private interchange.
"Update to the Language Subtag Registry", Doug Ewell, 8-May-08. ( bytes): This memo defines the procedure used to update the IANA Language Subtag Registry in conjunction with the publication of RFC 4646bis [RFC EDITOR NOTE: replace with actual RFC number], for use in forming tags for identifying languages. As an Internet-Draft, it also contained a complete replacement of the contents of the Registry to be used by IANA in updating it. To prevent confusion, this material was removed before publication.

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