# How to contribute to documentation

If you want to help to extend and improvement OSM documentation, you are highly welcome.

All OSM documentation is originally maintained in markdown and then converted to different formats. You can check the sources of this **OSM User Guide** at [this location](https://osm.etsi.org/gitlab/osm-doc/osm-user-guide).

In case you wanted to contribute to OSM documentation, it is highly recommended checking "OSM's Documentation How To", which covers [how to contribute to OSM documentation](https://osm.etsi.org/gitlab/osm-doc/documentation-how-to)
