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Autolisp语言数据变量类型，适合初学者快速学习Autolisp语言。(Autolisp language data variable type, suitable for beginners to quickly learn Autolisp language.)

cad软件，经常使用lisp语言的程序，并会更改系统变量，本程序用来检测系统变量监测工具。(Detection system variable monitoring tool in CAD software)

单线转换双线，快捷键tt。欢迎下载 Single-line variable double-line shortcut key TT(Single-line variable double-line shortcut key TT)