"st2a was conceived by Andy Gayton, David Stokes, and Asi Behar as a solution to a persistent problem that plagued the team during their day jobs at Revver.
Every time a spec was needed, invariably, a debate over the format of the spec would arise - with developers preferring a plain text document on a wiki, and business people preferring traditional tools such as Microsoft Word based on a set template.
Cue reStructuredText - an easy-to-read, plain text document format designed to keep content and the style/formatting of content separate. Author the content once, then present it in a variety of formats - like html and pdf - with infinite possibilities for styles and templates."