true Selector position true Selector - ALT true Selector - VS true Selector - HDG true Selector - CRS true Selector - IAS true Right knob - ALT decrement true Right knob - ALT increment true Right knob - VS decrement true Right knob - VS increment true Right knob - HDG decrement true Right knob - HDG increment true Right knob - CRS decrement true Right knob - CRS increment true Right knob - IAS decrement true Right knob - IAS increment