Re: [Ltru] Macrolanguage usage

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While documents written in Standard Mandarin SHOULD use the 'cmn' (Mandarin) language subtag to form the larger language tag, for some applications where it is necessary to indicate that the text is intended for wide accessibility MAY be indicated by using the 'zh' subtag.
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What I'm looking for is a subtle distinction.  What this sounds like is "use the cmn subtag for Mandarin, but if you want 'wide accessibility' they you're going to want zh instead".  I don't want developers to think "gee, do I want to support only Mandarin, or all of China?  Well, China's got more users, so I'll tag it zh".

Apps should be able to make the correlation between zh and cmn and yue if appropriate for them, so the zh tag only sounds that helpful in the "legacy" context, or when you don't know if its truely Mandarin.  I do not want Mandarin to be commonly tagged as zh when it can be avoided.

So I'm thinking something more like this (draft, I don't really like how well I said it)

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While documents written in Standard Mandarin SHOULD use the 'cmn' (Mandarin) language subtag to form the larger language tag, the 'zh' (General Chinese) subtag MAY be used if the actual variation is not known or for compatibility with older applications.
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- Shawn
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