SEC3D#OPT 3維截面選項# remove the # sign and enter foreign help string in this lineSket#On#Pln 平面草繪Sketch entities on a specified plane.在一張指定的平面上草繪圖元。Pick#3d#Crv 選出3維曲線Pick 3d curves or edge as section entities.選取3維曲線或邊作為截面圖元。Quit 退出Abort from section creation.中止截面創建。