Module Link: http://drupal.org/project/advanced_help Who: All users should enable this module and site developers should use this for documentation What: The advanced help module allows your modules to define more advanced help files than the basic functionality that Drupal provides. When: I enable this module on all of my sites. Where: You can find the advanced help index at /admin/advanced_help but quite a few modules reference advanced help directly Why: Lets face it, documentation isn't the strong point of most open source projects. This module helps you find the documentation you need directly in Drupal without having to drop to the filesystem and read things like the README.txt.   Theme song "i dunno" by grapes. module-a-day_podcast-0024.mp3