Tags for Identifying Languages
RFC 5646, “Tags for Identifying Languages”, is a Best Current Practice document published in September 2009 by A. Phillips, M. Davis. It obsoletes RFC 4646. The canonical text is published by the RFC Editor.
Abstract
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. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.
What “Best Current Practice” means
Documents the IETF community's recommended operational or procedural practice rather than a protocol specification.
The canonical text of RFC 5646 is hosted at rfc-editor.org. Available in TXT,HTML.
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