NMF - ArcGIS Explorer Map File
This is a map file generated with the ArcGIS Explorer package which is a free program developed by ESRI for mapping. These files may include terrain, points of interest, coordinates, 3D environmental effects, drawn shapes and other map objects. It can also contain directions, measurements and routes as well. They are used to save and load custom maps as well as allowing maps to be shared online. These files may be used fo view a map with the ArcGIS Explorer application or may be used with a web browser enabled with the ArcGIS Explorer add-on.