Here are the slides from my NAVUG talk on doing documentation for Microsoft Dynamics NAV solutions.
COM08 An elegant solution for creating Dynamics NAV user documentation
The open sourced code can be found at:
https://github.com/hougaard/HelpTools
A precompiled package of the tools can be downloaded from here:
I suggestion reading through the old posts on this to understand whats going on at http://www.hougaard.com/user-documentation-of-a-nav-solution/