I just committed to CVS some notes regarding usage of the include tag with pages vs fragments of pages.
I also added documentation for the include-optional and include-output tags that were added by lars, along with references to ad_form to the templating system forms documentation.
I would like to kindly ask our developer community to be mindful of our users, and _never_ commit functionality (especially functions/tags) without also committing documentation.
It alienates users, developers and weakens and fragments the community. Right now I think an "OpenACS Hidden Secrets" book would be larger than an "OpenACS" book, if they were written.