New Web page on supplementary RFC 3066bis codes

Doug Ewell dewell at
Tue Jun 22 07:51:07 CEST 2004

I've just put up a new Web page:

    "Supplementary codes for RFC 3066bis"

which discusses the use of "deprecated" ISO 639 codes, "formerly used"
ISO 3166 codes, and United Nations M.49 numeric geographical codes in
RFC 3066bis.

RFC 3066bis provides a great deal of flexibility, and along with it,
some potential for confusion.  This page describes the two different
sets of region codes, explains the rules on deprecated ISO codes, and
shows why the freely available, official code lists aren't enough by
themselves to answer all questions.

I hope this page will solidify the issues in my own head, explain them
for anyone who is still puzzled, and eventually turn into a useful
reference for language tag users once the new RFC is approved.

I'd like as many list members as possible to review this page and offer
any suggestions and corrections they may have.  Please praise publicly
and flame privately.  :-)


-Doug Ewell
 Fullerton, California

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