Detail improvments. Control friendly desighning, it is able to take off and land in muitiple terrains, only need a litttle time to practice. //Group 1 to start/shut down engine 1&2. Group 2 to start/shut down engine 3&4. Group 3 activate/deactivate VTOL nozzle. Group4 to turn on/off lights.//VTOL lever to adjust thrust direction. Trim to adjust VTOL thrust.//Texi Proc: adjust thrust direction to foward for about 15 degree, activate an engine group.//Take Off Proc: 1. Rolling Take Off: As texi i proc, power up engines and perform a normal rolling take off. 2. Vertical Take Off: Activate VTOL nozzle and power up it. Set thrust to 20% -40%, carefully control the plane until turn to normal fight. After take off, VTOL is able to be shut down.//Verticle Landing Proc: Activate VTOL to improve performance at low airspeed!!! Adjust thrust power and direction with gentle and land as a chopper. Remember your thust is able to use for decelerating.It's a little tricky, you may need some practice. to land anywhere you want.//HVE FUN!!!