Why? Do you want to be accessible (to whom?), or do you want to meet the WAI
criteria? These are two different things, partly even contradictory. For an
explanation, see
http://www.cs.tut.fi/~jkorpela/www/bb.html
I see... you want to sell services for W3G WAI WCAG 1.0 AAA conformant
design and conformance auditing, and you claim such conformance, and now
you'd like to know what it is and how to achieve that.
I have read that the website also needs to be multilingual in order to
qualify for AAA.
Where did you get _that_ idea? Have you actually read the document that you
claim conformance to?
Well, there's actually the point that to be _really_ accessible, you should
present your content in all languages. After all, language barriers are
extremely important. For most content in the wide, wide world and the world
wide web, the main barrier to most people in the world in understanding the
content is that it is written in a language they don't understand at all or
understand imperfectly.
But this is something that WAI does not discuss at all.
If that is true, how many languages does one require
the website to translate?
If you wanted to be accessible to all (which is what many pages claim,
apparently with little idea of what that would really mean), it would not be
enough to translate the site into the 6,000 to 8,000 languages of the world
(the number is unknown, disputed, and generally decreasing). A "language"
may consist of dozens or hundreds of language forms (dialects, slangs,
etc.), often with limited mutual intelligibility.
Of course, you would need to make the site content available in spoken form,
too, since most of the world's languages have no writing system.
