userdoc.md

@@ -6,16 +6,32 @@
 
 ## Dependencies
 
-There are a few dependencies:
+There is one dependency:
 
 * Python3 pandas
-* Python3 dbf
 
 ### Windows
 
 Pandas is already included in the Python3 embedded in QGIS for Windows.
 
-You still need to install dbf module in this embedded Python. For that:
+### GNU/Linux
+
+Simply install those modules with your package manager. For example, on Debian/Ubuntu/Mint/..., you can run this:
+```
+sudo apt install python3-pandas
+```
+If you don't have administrator rights and pip3 is installed on your machine, you can install those modules by running:
+```
+pip3 install --user pandas
+```
+
+## Optional dependencies
+
+CircleKill module can optionally produce topology dbf files if you install **dbf** Python3 module.
+
+### Windows
+
+You need to install the dbf module in the Python3 embedded in QGIS for Windows. For that:
 
 * Open a file explorer and go to your QGIS installation directory (something like `C:/Program Files/QGIS 3.10`)
 * Right-click `OSGeo4W` command file and select `run as administrator`.
@@ -27,14 +43,10 @@ python3 -m pip install dbf
 ```
 
 ### GNU/Linux
-
-Simply install those modules with your package manager. For example, on Debian/Ubuntu/Mint/..., you can run this:
-```
-sudo apt install python3-pandas python3-dbf
-```
-If you don't have administrator rights and pip3 is installed on your machine, you can install those modules by running:
 ```
-pip3 install --user pandas dbf
+sudo apt install python3-dbf
+# OR
+pip3 install dbf
 ```
 
 ## Install the plugin archive