+ /* button labels */
+ "*phasers.label: Phasers",
+ "*photons.label: Torps",
+ "*destruct.label: Destruct",
+ "*quit.label: Quit",
+ /* layout constraints */
+ "*photons.fromHoriz: phasers",
+ "*destruct.fromHoriz: photons",
+ "*quit.fromHoriz: destruct",