说明：  Auto LISP 可以直接调用几何所有的AutoCAD命令，为AutoCAD提供了使用高级语言开发编程的途径，使得用户能充分利用它对AutoCAD进行二次开发。
(Auto LISP can directly call all geometry of the AutoCAD command, AutoCAD provides access to high-level language programming, so that users can make full use of it to secondary development of AutoCAD.)