说明：  MapServer帮助文档 MapServer是一款开源的GIS开发工具，主要用来开发webGIS。MapServer帮助文档详细介绍了MapServer的体系结构、各种接口的使用等。该书对于MapServer开发者具有一定的指导意义。
(Help Documentation MapServer MapServer is an open source GIS development tools, primarily used to develop webGIS. MapServer MapServer help document details the architecture, the use of various interfaces. The book for the MapServer developers have a certain significance.)