Below is a list of the Function keys and their assignments applicable to this model. F0. Lights on/off F1. Sound on/off F2. Long whistle F3. Short whistle F4. Buffering up F5. Coupling up F6. Injectors F7. Drain cocks F8. Safety valve F9. Guards whistle F10. Door slam F11. Wheel/track ‘groan’ F12. Buffer ‘clash’ on wagons F13. Shunting mode. Press once the loco goes slowly, press it again and you are back to normal control. F14. Acceleration/Deceleration over ride. Press once to over ride, press again to return to preset settings. F15. Aux 1