= Markdown

[http://daringfireball.net/projects/markdown/basics/ Markdown] is a semi-structured markup language originally designed for blogs which is now used in several wikis as well.

It's now widely used in the software developer community because it's the preferred authoring markup used by GitHub and StackOverflow.
See [http://github.github.com/github-flavored-markdown/ Introduction to GFM] and  [http://stackoverflow.com/editing-help/ Markdown help] respectively for what variant is supported in each.


A lot of this is close to WikiCreole, ReST and our own markup. See also TracDev/Proposals/AdvancedWikiFormatting for some things that could be stolen from it.