The GEO Working Group has published a significantly updated article:
Language tags in HTML and XML
At: http://www.w3.org/International/articles/language-tags/
(Contributed by Martin DÃrst & Richard Ishida, W3C)
Language tags are used to indicate the language of text in HTML and XML
documents, and are also used in HTTP headers, SMIL and SVG switch statements,
CSS pseudo-elements, etc. This article describes how to choose values for
language tags.
The article augments an existing article with information that previously
existed in a tutorial. The article title was also changed from "Language
tagging in HTML and XML".
See the Internationalization Activity site at http://www.w3.org/International/
You can find various news filters and RSS feeds relating to outputs of the
Internationalization Activity at http://www.w3.org/International/log/description
============
Richard Ishida
W3C
contact info:
http://www.w3.org/People/Ishida/
W3C Internationalization:
http://www.w3.org/International/
Publication blog:
http://people.w3.org/rishida/blog/
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