A zone defines an area in which a location is computed. A zone translates local locations related to the area of the zone to global geographic locations. A zone is defined by the ZoneType ObjectType (see 7.1). In Figure 8, the ObjectType is shown.

Figure 8 – ZoneType ObjectType

The relation between zones and the global position and global location is shown in an example in Figure 9. The global position Variable X:MyPosition references with its SourceId Variable the X:Zone123, and the global location Variable X:MyLocation with the SourceId Variable of its position the X:Zone234. The GlobalLocations Object defined in 10.1 is the standardized entry point to zones provided by a Server.

Figure 9 – Example of relation between zones and global position and location