Import3DAscii。　导入三维数据到文本文件，以方便其它软件的提取等操作。-Import3DAscii. Inducts the three dimensional data to the text documents, facilitates other software to withdraw and so on the operation.

vc实现地图的基本操作，放大，缩小，漫游。读取一定控制格式的文本文件-vc map to achieve the basic operation, magnified, reduced, roaming. Must control the format to read a text file

MapX基本操作的源代码，包括放大，缩小，图元的选择，基于MFC，多文本对话框-MapX basic operation of the source code