Multiple UI parts
 

So.. If I want to combine several parts, how do I do with the .ini file?

If I want the journal as a separate piece, and then a completely different tracking window, or whatever.

Can I just add

cl_ui_skinname ui1
cl_ui_subdir UI/

cl_ui_skinname ui2
cl_ui_subdir UI/

??

Nope;

You would only use

cl_ui_skinname ui1
cl_ui_subdir UI/


and put all your files in the ui1 directory.