Caps lock also works for zooming in and out, though you cannot zoom to cursor.
Also I've been trying to designate numbered groups to my ships but they aren't holding, can anyone give me the order in which Ido this.
1) Select the units you wish to number group.
2) While holding "control", press the number key you wish to assign to this group.
3) Any time you press this number key, the same group of units will be selected.