# OSM Data Import
-OSM data is initially imported using osm2pgsql. Nominatim uses its own data
-output style 'gazetteer', which differs from the output style created for
-map rendering.
+OSM data is initially imported using [osm2pgsql](https://osm2pgsql.org).
+Nominatim uses its own data output style 'gazetteer', which differs from the
+output style created for map rendering.
## Database Layout
## Configuring the Import
How tags are interpreted and assigned to the different `place` columns can be
-configured via the import style configuration file (`CONST_Import_style`). This
+configured via the import style configuration file (`NOMINATIM_IMPORT_STYLE`). This
is a JSON file which contains a list of rules which are matched against every
tag of every object and then assign the tag its specific role.