Apologies, Felix!
I've been working with John to put together an XML gauge for his BAe 146-200 simpit, which operates the APU. Where we are so far is that the gauge is activated by a keypress (or a switch in a more traditional cockpit) so that a spool-up and running whine are played and an effects exhaust plume is seen in exterior view coming from the APU exhaust port. The plume stops and the APU spools down when the key is pressed again.
The problem was that with the keystrokes I'd assigned, the gauge would only activate in 2D cockpit view (and no other view, not even the 2D view 'w'-cycle), which is apparently not all that much good for a simpit where you wouldn't have the cockpit visible.
After a little research, I've reassigned the keystrokes to a fixed key event, so that now it operates in any view. The event is the afterburner (Shift+F4) and since this is redundant in a BAe 146, this key sequence now fires up the APU.
There are a few more things to do with it, so once it's done, I'll upload it to the gauges section.
