> From: Peter T. Daniels [mailto:grammatim@...]

> > ISO DIS 639-3 defines a set of 3-letter identifiers compatible with

ISO

> > 639-2 but with the aim of providing comprehensive coverage of

languages,

> > whether living or extinct, naturally-occuring or invented, spoken,
> > written or signed.
>
> Any connection with Ethnologue's 3-letter codes?

Partially. There are cases in which the IDs used in Ethnologue 14th Edn
are incompatible with what is defined in ISO 639-2. The 15th edn of
Ethnologue will introduce a one-time change of identifiers to give
alignment with ISO 639-2. Many identifiers in ISO 639-3 will match what
was used in Ethn14 (and 15), though.



Peter Constable