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example2
- 打开一个线文件和保存改变过的线文件,编辑线的属性和参数(调用mapgis函数); 用橡皮筋的形式输入线,可以用F3撤销F4恢复-Open a line file and save the changed line files, edit the line attributes and parameters (call mapgis function) the form of input line with a rubber band, you can use F3 F4 withdrawa