Sample IANA language subtag registry

Doug Ewell dewell at
Tue Jul 13 07:32:48 CEST 2004

Mark Davis <mark dot davis at jtcsv dot com> wrote on 3066bis.html:

> The "q" tags are already permitted in RFC 3066 (there at least was no
> text that forbid them). We changed the text in draft-04 to make their
> usage clear.

Actually, RFC 3066 says:

> ISO 3166 reserves the country codes AA, QM-QZ, XA-XZ and ZZ as user-
> assigned codes.  These MUST NOT be used to form language tags.

No such limitation appears to exist for ISO 639 private-use codes.  In
any case, it is good to see them explicitly permitted.

-Doug Ewell
 Fullerton, California

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