The six on the right are the movement commands 8attack, move, ...) The upper highligted is the reinforcements command (to call down units you have build) and the lower the retreat button (all units stop to fire and return to the base. but had no real effect in the alpha) The first (not highlighted) is used to call in bombers (ground) or use the ion cannon (space, did not work). The lower one.. mhhh... I forgot about this one.