通过图面上的等高线 获取等高线之间的高程点 用于高程点加密（须有cass配合）-Contour through the surface between the contour lines for elevation point for the elevation point encryption (must have cass match)

1、“appload”命令将程序加载到应用图幅 2、“zd”展点命令 3、“pm”平面检测统计命令 4、“gc”高程检测统计命令 5、“sj”间距检测统计命令(1. The "appload" command loads the program into the application map 2, "ZD" point command 3, "PM" plane test statistical command