COORDINATES SYSTEM FORMAT
Coordinate systems are defined by identifiers. Identifiers have the format Type: Value. Depending on the type of identifier, the value has a different format:
This type of identifier describes a coordinate system based on its EPSG code defined by the European Petroleum Survey Group. A coordinate code is defined using a code from a geographic system (GCS) or a projected system (PCS). The codes can be found at this address: http://www.epsg.org.
EPSG:23030(UTM 30N / ED50)
EPSG:32630(UTM 30N / WGS84)
EPSG:31463(DHDN / 3-degree Gauss zone 3)
Format used by the PROJ.4 library. More information can be found at this address: http://proj4.org/parameters.html.
PROJ4:+proj=utm +zone=30 +ellps=intl +units=m +no_defs