Tu pomoze len windows.
<keybind key="A-Left"> <action name="MaximizeVert"/> <action name="MoveResizeTo"><width>683</width><x>0</x></action></keybind><keybind key="A-Right"> <action name="MaximizeVert"/> <action name="MoveResizeTo"><width>684</width><x>-0</x></action></keybind>
Já kdysi na openboxu používal tyto bindy...