+### Running Nominatim during development
+
+The source code for Nominatim can be found in the `src` directory and can
+be run in-place. The source directory features a special script
+`nominatim-cli.py` which does the same as the installed 'nominatim' binary
+but executes against the code in the source tree. For example:
+
+```
+me@machine:~$ cd Nomiantim
+me@machine:~Nomiantim$ ./nominatim-cli.py --version
+Nominatim version 4.4.99-1
+```
+
+Make sure you have activated the virtual environment that holds all
+necessary dependencies.