Language subtag registration for acor1990 (ammended from ao1990)

Stephane Bortzmeyer bortzmeyer at
Thu Aug 25 16:12:51 CEST 2011

On Thu, Aug 25, 2011 at 02:49:38PM +0100,
 António H F P A Emiliano (FCSH/UNL) <ah.emiliano at> wrote 
 a message of 161 lines which said:

> iii) can anyone please direct me to a document that states the
> formal requirements of a language subtag of this kind?

<> is a good
start on language
tags. <> is good,
too. <> is a primer on
the registration of new subtags. If you want the full standard
(warning: not for the faint of heart),

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