Modify the "warning" message when looking up for languages not supported
I have drafted a new section to be part of the mw:Manual:Language page. I have put it on the talk page for comment. I would be grateful if you would comment there or here before I shift it to the page itself. Have I written anything incorrect or misleading? Have I missed out anything important?
The section is on a page which seems to be primarily aimed at developers, so it looks a bit out of place, being primarily aimed at potential users and translators. However, it seemed to be too specific for the more general mw:Manual:MediaWiki_architecture#Languages page.
About the best place to put the advice needed, if the error message above is part of the translate extension, then I think it would be better if the error message linked to one of the help pages for the translate extension at Mediawiki. The help provided wouldn't then need to be as Mediawiki specific as the help page already drafted for the mw:Manual:Language page.