And the IANA registry can be found at:
Search for fonipa and you will find it in the 'variant' tag section.
On Tue, 23 Oct 2007 17:47:17 +0100
Ralph Cleminson <[log in to unmask]> wrote:
> No, you won't find it in RFC 4646 itself, but you will find it in the
> IANA Language Subtag Registry, to which RFC refers. Of course it's a
> free country and you can indicate writing systems however you like,
> and the debates you refer to indicate that there are different
> opinions on how to do it. (And it is axiomatic that different
> purposes may require different methods.) However, TEI has chosen to
> use a lang attribute in the xml namespace, and the W3 recommendation
> for xml refers to RFC 4646, which in turn relies on IANA, so as far
> as TEI is concerned, this is the canonical way of doing it.