objects when the area becomes too large.
+#### NOMINATIM_UPDATE_FORWARD_DEPENDENCIES
+
+| Summary | |
+| -------------- | --------------------------------------------------- |
+| **Description:** | Forward geometry changes to dependet objects |
+| **Format:** | bool |
+| **Default:** | no |
+| **Comment:** | EXPERT ONLY. Must not be enabled after import. |
+
+The geometry of OSM ways and relations may change when a node that is part
+of the object is moved around. These changes are not propagated per default.
+The geometry of ways/relations is only updated the next time that the object
+itself is touched. When enabling this option, then dependent objects will
+be marked for update when one of its member objects changes.
+
+Enabling this option may slow down updates significantly.
+
+!!! warning
+ If you want to enable this option, it must be set already on import.
+ Do not enable this option on an existing database that was imported with
+ NOMINATIM_UPDATE_FORWARD_DEPENDENCIES=no.
+ Updates will become unusably slow.
+
#### NOMINATIM_LANGUAGES
| Summary | |
| **Description:** | Enable searching for Tiger house number data |
| **Format:** | boolean |
| **Default:** | no |
-| **After Changes:** | run `nominatim --refresh --functions` |
+| **After Changes:** | run `nominatim refresh --functions` |
When this setting is enabled, search and reverse queries also take data
from [Tiger house number data](Tiger.md) into account.
| **Description:** | Enable searching in external house number tables |
| **Format:** | boolean |
| **Default:** | no |
-| **After Changes:** | run `nominatim --refresh --functions` |
+| **After Changes:** | run `nominatim refresh --functions` |
| **Comment:** | Do not use. |
When this setting is enabled, search queries also take data from external
the import. When this option is unset, then osm2pgsql uses a PsotgreSQL table
to store the locations.
+When a relative path is given, then the flatnode file is created/searched
+relative to the project directory.
+
!!! warning
The flatnode file is not only used during the initial import but also
Setting this parameter to 0 disables polygon output completely.
+
+#### NOMINATIM_SEARCH_WITHIN_COUNTRIES
+
+| Summary | |
+| -------------- | --------------------------------------------------- |
+| **Description:** | Disable search for elements that are not in the country grid |
+| **Format:** | boolean |
+| **Default:** | no |
+| **After Changes:** | run `nominatim refresh --website` |
+
+Enable to search elements just within countries.
+
+When enabled, if, despite not finding a point within the static grid of countries, it
+finds a geometry of a region, do not return the geometry.
+Return "Unable to geocode" instead.
+
+
### Logging Settings
#### NOMINATIM_LOG_DB
| **After Changes:** | run `nominatim refresh --website` |
Enable logging of requests into a file with this setting by setting the log
-file where to log to. The entries in the log file have the following format:
+file where to log to. A relative file name is assumed to be relative to
+the project directory.
+
+
+The entries in the log file have the following format:
<request time> <execution time in s> <number of results> <type> "<query string>"
Request time is the time when the request was started. The execution time is
-given in ms and corresponds to the time the query took executing in PHP.
+given in seconds and corresponds to the time the query took executing in PHP.
type contains the name of the endpoint used.
Can be used as the same time as NOMINATIM_LOG_DB.