Thank you buddy.
but... I've known about the function-keys and menu commands (I've read the manual carefully before...). Well, I think what I need is tip or sth like that...
And USSoilder, can you land the helicopter on the right position easily? I just find it difficult to control my speed and altitude accurately, even using a joystick... Landing to a small place (e.g. a yard of the base) is much harder than it should be... what do you think?