/schemas/apps/mutter/general/overlay_key /apps/metacity/general/overlay_key metacity string <Super_L> Modifier to use for extended window management operations This key will initiate the "overlay", which is a combination window overview and application launching system. The default is intended to be the "Windows key" on PC hardware. It's expected that this binding either the default or set to the empty string. /schemas/apps/mutter/general/clutter_plugins /apps/mutter/general/clutter_plugins mutter list string [default] Clutter Plugins Plugins to load for the Clutter-based compositing manager. /schemas/apps/mutter/general/live_hidden_windows /apps/mutter/general/live_hidden_windows mutter bool false Live Hidden Windows Determines whether hidden windows (i.e., minimized windows and windows on other workspaces than the current one) should be kept alive.