InstanceID

These are unique IDs for map instances and can be returned from, or. The continents themselves are treated as instances and have unique IDs.
 * See the of instance IDs, defined in Map.db2
 * UiMapID for a list of user interface maps, as used for the WorldMapFrame.
 * LfgDungeonID for group finder instances and JournalEncounterID for adventure journal instances.