Oh I ment Caps Lock, this key as a toggle for something has a nice feature. It has a led diode usually. Programmable on top if it. So nice programmer can set toggle on / off and inform the Player about status of the feature by the light.
My usual keyboard, an IBM SSK, doesn't have LEDs for its lock keys: it drives me nuts. D:
But in this case, a toggleable info thing would be nice. I guess some of the more novel gaming keyboard control thingies can probably do it, but I guess my annoyance at the lack of a toggle doesn't quite outweigh my potential annoyance at something going horribly wrong!