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|Internal abbreviation of the object|
|Used on these elements|
|Status: in use|
|Tools for this tag|
Internal abbreviation of the object, not to be used for informal names or positions.
Examples of objects
- railway=station. This tag is used for railway station codes used by railway companies. For example, has the station code DH (see on Wikipedia) and therefore has the tag railway:ref=DH. As another example, station has railway:ref=FBMZ while its UIC station code is uic_ref=8800004.
This tag is used in OpenRailwayMap to show station codes at low zoom levels.