Hi Nemo,
Do you literally want the ISO-639-3 code even where
MediaWiki and
Wikimedia use the ISO-639-1 code? If so, what for?
We work on an international dictionary for nautical terms.
ISO 639-3 is the international code used for software.
I need the relation between ISO 639-3 and WP-shortcuts,
because we think about integration to WD/WP.
Thanks! Markus