And another question by me ;)
I've set up a many-to-many relation (similar to the project-module relation in tutorial 5, but with more fields). I can add information, it works in the templates, everything shows up on my web pages, all seems fine. But if I enter data (of which I'm sure it is in the many-many array) in the search form, it gives no results. How can I make sure the search function is looking into those tables?