说明：  自从 AutoCAD 支持使用 ActiveX 开发以来，VBA 成为开发者又一选择。VBA 以其好学易懂的特性迅速地成为初学编程者的首选。
(Since AutoCAD supports ActiveX development, VBA has become another option for developers. VBA has quickly become the first choice for beginner programmers because of its easy-to-understand characteristics.)