SETUP#PLANE 設置平面# remove the # sign and enter foreign help string in this linePlane 平面Select reference plane.選取參照平面。Make#Datum 產生基準Create an datum to be used as the reference plane.創建要用作參照平面的基準。Quit#Plane 退出平面Quit selection/creation of a reference plane.退出參照平面的選取/創建。