This is used to determine how high to draw the white box when the user selects the building, and how high a Kirov Airship, Rocketeer, or another air unit will rise to clear the obstacle in their way (the building).

• 它用于决定当选中该建筑时，出现的白色虚线框的高度，还有基洛夫空艇、火箭飞行兵或其他任何飞行单位打算飞过该建筑时需要升高的高度。