[coordinate systems]
EPSG is an acronym for European Petroleum Survey Group. An identification attached to one of the geodetic parameters established by the EPSG and maintained by the IOGP Geomatics Committee. The EPSG geodetic parameters is a publicly available dataset composed of coordinate reference systems, datums, transformations, and related information such as ellipsoids and units of measure. Each parameter is assigned a unique EPSG code and a WKT.