4.5 Finding all objects which have relative spatial information

The user wants to find all objects which have relative spatial information with respect to one common coordinate system.

This leads to the requirements:

Provision of an object (see 6.2 SpatialObjectsListType), which

provides a standard entry point to find all objects which provide relative spatial information with respect to one common coordinate system

is identifiable

defines the origin of the coordinate system

communicates content changes inside this set