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Description
Describe what markdown is for, and how it's more of an idea that has been copied into numerous individual spin-offs, rather than one single standard.
I think of Markdown as a more intuitive version of MediaWiki syntax. Either way, the goal as I see it is to produce rich text documents in a syntax that's nearly as powerful as HTML but much easier to use.
I think we should also include a hyperlink to the historical "official" Markdown website, Daring Fireball. And if we're really productive, once the github markdown page is functional, try to get the Daring Fireball page to include a link at the top along the lines of Markdown has moved to ...