QCC

等高线赋值：根据第一根等高线赋高程,一次给多个等高线赋值( elevation contours: Function: Fu elevation contour lines according to the first root)

cass图层管理一个快速打开关闭图层的小插件很实用(cass layer management a quick opening and closing very practical small plug layer)

说明：  cad图层显示、关闭、冻结等快捷命令，非常好用(CAD layer display, close, freeze and other shortcut commands, very useful)

《AUTOCAD开发篇》曹颖著 基于lisp的CAD二次开发应用("AUTOCAD Development Chapter" written by Cao Ying)

说明：  打开后后台运行，截图时在CAD中选择对象后选择复制， 左下会出现转化成功的提示，此时可以到word中直接进行粘贴操作， 得到的矢量图清晰美观。(Turn on the background operation, select the object in CAD and copy it, At the bottom left, you will be prompted that the conversion is successful. At this time, you can paste directly in word software, The vector image obtained is clear and beautiful.)

请拾取第一根线(LINE)或弧(ARC)连接线段或圆弧 ,再拾取第二根线(LINE)或弧(ARC)进行连接(Please pick up the first lines (LINE) or arc (ARC) connection line or arc, then picked up second line (LINE) or arc (ARC) connection)

说明：  必備LISP 各類型放樣程式 計算程式 幻燈片選取(Selection of Slides for Calculating Programs of Various Types of Lofting Programs in LISP)

说明：  Display & hide The line generates the nodes The projection line Merge node I'm going to draw three dimensions

Chapter 6-8 Chen Huaichen courseware

Boe bot line detection source code