On the InterWiki page there's a delightful little note saying that a lot of work on a WikiSyntaxStandard has been underway, but the link was to this empty page.  

Is there such work floating around here someplace?  I'm about to embark on YetAnotherWikiImplementation and I have no reason not to use any WorkingStandard that may exist.

-- MichaelWilson
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Here is the work called WikiCreole, of which Version 1.0 represents its frozen state for two years (beginning 2007)

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CategoryInterWiki