本程序在cad中选择字符串，然后把所有数字型字符串变成数字，然后求和-this lisp text strings,then change the number text into integer,then sum all the integers.

批量提取文字的内容及坐标，提取圆的坐标-extract the XY coordinates of strings and circles.........

001 - 获取屏幕角点坐标，002 - StartUndoMark EndUndoMark，003 - 搜索曲线上与一指定点最靠近的点，004 - 求图块内圆的圆心坐标(Matrix)，005 - 调用系统选择文件夹对话框，006 - AutoCAD索引颜色（ACI）与RGB颜色对照表，008 - 自定义Hatch，011 - 将AutoCAD数据转换成字符串(001 - Get screen corner coordinates, 002 - Start UndoMark End Undo