Info: The altitude commands instruct a plane to change to a specified altitude (levels 0 to 8). A plane ascends or descends 1 level per move on the radar screen.
Items[7]
Bounds: x1=24, y1=88, x2=384, y2=136
Type: -120
Info: A plane begins to change altitude immediately after receiving a command and will ascend or descend 1 level in its next move.
Items[8]
Bounds: x1=24, y1=136, x2=384, y2=216
Type: -120
Info: The '*' command causes a plane to land at its destination airport if its path crosses it. It is only active when a plane is at or commanded to an altitude of level 1 and is cancelled by any other command issued to the plane.