This "key" switches on and off based on a key code. It is commonly used to show Caps or Scroll lock, but could be link to any virtual key codes as well as Touch-It codes.

	Code is the ident of the light. Codes below 2000 are reserved. 2000 to 3000 can be freely used and driven from a third application using automation or Windows messages.
	Common codes are: Caps lock : 20 Scroll lock : 145 Lock key down : 1000 (Touch-It lock key)