Just as an aside, I also subscribe to having the users write their own documentation.
This has numerous advantages:

• They gleen a more formal understanding of your solution to the problem
• Its more likely to be complete -> not missing 'coder-obvious' elements
• Its 100% technical-jargon-free!
• You dont have to do it yourself!

Of course, am sure you could generate a framework template from your code for them to fill in (:
the 'qif;