Hi,
In keyfile.c there are 4 preferences: msgwin_status_visible, msgwin_compiler_visible, msgwin_messages_visible and msgwin_scribble_visible. They are currently hidded, but not documented as such, and are grouped with the Interface preferences. As aconsequence, using Edit -> Preferences or quitting Geany writes them into geany.conf, so you must stop all geanys to change any of these.
Nick did some research: Enrico added msgwin_*_visible six months ago, with the intent to include them in the preferences dialog.
r4500 | eht16 | 2009-12-20 20:07:52 +0000 (Sun, 20 Dec 2009) | 1 line Add preferences for hiding single tabs from the messages window (no GUI preferences yet, still to be implemented).
My question is: do you need these in the Preferences dialog? If not, it'll be good to at least make them "officially" hidden.
Personally I can live without yet another 4 checkboxes in the dialog, and so can Nick.