scope:

In the context of this European Prestandard, a direct positioning system identifies location of points in relation to the Earth by coordinates. The most widely-used systems are geodetic reference systems. Others exist, mainly for local use. This European Prestandard: - defines the basic concepts related to coordinate position information; - gives the guidance necessary to use the geodetic reference systems for geographic information. The choice of any particular system is outside the scope of this European Prestandard.