1. Start a new editor mission
2. Start the preview
3. Press ESC to get into the debug console
4. Copy in the following line:
inGameUISetEventHandler ["Action","hint 'Lights, Camera, Action!'"]
5. Go near a vehicle.
6. Scroll to open the Action-Menu
7. f.e. try to access an Action by pressing SPACE or MIDDLEMOUSE - the function doesn't trigger, the Action plays as usual.
8. Try ENTER - the event handler triggers, the function can be intercepted.