please refer to tinyMCE documentation. We changed nothing in thei original script in such points. So this info should be taken there.
Thanks for the stunningly fast reply!
I didn't realize the connection between the paramters and TinyMCE.
In case anyone else is also interested in customizing the toolbar controls, this is a good starting point: http://wiki.moxiecode.com/index.php/TinyMCE:Control_reference