Maps are used to define how information is displayed and printed by your application. They are set up and edited using the Map Editor application (MAPEDIT). Maps are numbered within mapsets which have names. The mapsets are stored on the database, independently of the application. This means that you can change many of the characteristics of the map without recompiling your applications.
The Map Editor application is the only DP4 application which is very different between release 4.5xx and 4.6xx. The 4.6xx Map Editor is described in the 4.600 Map Editor User Guide.