@Estel (or someone else who knows): Is there a way in openbox to undecorate (disable title bar) all windows by default and permanently?
<application name="*" class="*"> <decor>no</decor> <position> <x>0</x> <y>0</y> </position> </application>
# the name or the class can be set, or both. this is used to match # windows when they appear. role can optionally be set as well, to # further restrict your matches. # the name, class, and role use simple wildcard matching such as those # used by a shell. you can use * to match any characters and ? to match # any single character. # when multiple rules match a window, they will all be applied, in the # order that they appear in this list