Almost Free Text
I was writing design documents in ASCII, like this:
Design Document *************** Weiqi Gao Wed Nov 17 20:08:10 CST 2004 ---------------------------- Introduction ============ The phase two system will have two tiers - The business tier - The management tier
when Rob showed me AFT.
Rob: Have you used AFT?
Me: What is AFT?
Rob: Almost Free Text. It's like a Wiki. Byron turn me on to it.
Me: I'll give it a try.
AFT turnout to be pretty easy. You write design.aft:
*Title: Design Document
*Author: Weiqi Gao
*TOC
*Introduction
The phase two system will have two tiers
* The business tier
* The management tier
then run
[weiqi@gao] $ aft design.aft
to generate design.html:

You can even run
[weiqi@gao] $ aft -type tex design.aft [weiqi@gao] $ pdflatex design [weiqi@gao] $ pdflatex design
to generate design.pdf, with navigation tree and hyperlinks:

If you are looking for a lightweight but version controllable (i.e., text not binary) document tool for a project, AFT might fit the bill.