Textile - slopjong/w GitHub Wiki
Wikipedia says
Textile is a lightweight markup language originally developed by Dean Allen and billed as a “humane Web text generator”. Textile converts its marked-up text input to valid, well-formed XHTML and also inserts character entity references for apostrophes, opening and closing single and double quotation marks, ellipses and em dashes.
- The Textile Reference Manual
- Quick overview (wikipedia)
- Textile test pages [0, 1]