concept applied to the grouping of all the location referencing elements of a TPEG Message together in one place

NOTE Many TPEG applications are designed to deliver TPEG messages, which consist of three high level containers, each with one or more elements. These containers are for message management, event information and location referencing information.

NOTE that some special application messages do NOT include a location referencing container, such as a cancellation message. It should also be noted that each container does not necessarily have all possible lower level elements included.