Left click and hold over an Entity to get a menu of actions for it.
Right click an Entity to get a description of any special attributes it has.
Right click and drag to move the map around.
Mouse Scroll wheel to zoom in and out of the map.
Ctrl-E : Pass or unpass this round.
Ctrl-S : Submit an action that is pending when autosubmit is off.
Esc : Cancel and clear the action you are building or you have Queued.
Tab : Move to next permanent that can act.
Hold down Shift to see all details of a space. You can use this to see what a Figure is enchanted with.