Hoi,
Typically you have set in your preferences the language you want to
localise in. This will make the "translation tool" default to your
language. Every language has a portal page for instance
http://translatewiki.net/wiki/Portal:Hi for Hindi, there you find the
"translation tool" as well. In addition there is the "language
statistics" which is an alternate route into everything that needs
localisation.
In addition people can give you the direct URL for something that
needs doing ..
http://translatewiki.net/w/i.php?title=Special:Translate&group=out-wiki…
<http://translatewiki.net/w/i.php?title=Special:Translate&group=out-wikimediamobile&language=hi>
for instance is specifically for Wikimedia Mobile and Hindi. For some
messages some background is provided in the "qqq" messages ..
We provide support in our IRC channel: irc://freenode/mediawiki-i18n
and you can ask questions in our Support page :)
Thanks,
GerardM
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