> The only thing I'd need too is how to rebuild the documentation. Or if I delete it, will it be rebuilt automatically?
> Still, I'll have to know where are the generated help files.

To generate the help files on your own, create a folder and from there use the following command:
meinproc /path/to/index.docbook
For example for the Kate handbook:
meinproc /path/to/tdebase/doc/kate/index.docbook

This will create a set of html files in the folder. The same files are the one used in the actual handbook, even though in most cases they are stored in a bz2 archive.

Cheers
  Michele