MO_View实现对图形的一些放大缩小的基本功能，并实现图形面积计算等功能-MO_View realize some of the graphics zoom the basic functions and to achieve graphical features such as area calculation

资料为《基于ArcObjects与C#.NET的GIS应用开发中》的第六章空间数据的可视化表达-Information for expression based on ArcObjects and C#. NET GIS application development, "Chapter VI of spatial data visualization