description of a spatial location in the real world according to a defined reference system

EXAMPLE Coordinate tuple: 51.476852, -0.000500.

NOTE 1 to entry It is not necessary for the rules be formal coordinates but they could be descriptive.

NOTE 2 to entry The term “location reference” has been used within ITS, but the term “spatial reference” is preferred to better align with the activities of ISO/TC 211.