Installation/Visualisation-Module-Installation-(includes-the-Core-Module).md

@@ -2,11 +2,13 @@
 
 In order to run the Visualisation Module of SEMpy, you will have to download manually VTS and Blender, via the following links:
 
-- VTS: https://timeloop.fr/vts/ 
+- VTS: https://timeloop.fr/vts/      (
 
 - Blender 2.83: https://www.blender.org/download/ 
 
-WARNING: make sure to download Blender 2.83 and not a higher version.
+**WARNING:** 
+- make sure to download Blender 2.83 and not a higher version
+- VTS is not available on Mac, but you can use the Module only with Blender
 
 # 1. Installing SEMpy Visualisation Module 
 
@@ -141,7 +143,11 @@ Then run :
 cd <complete-package-name>/lib/python3.8/site-packages/sempy/<core-or-visualisation>/
 ```
 
-Note : for visualisation, you need to go a little deeper to run the tests with ```bash cd tests```
+Then **for visualisation only** :
+
+```bash 
+cd tests
+```
 
 And then run the unittests 
 ```bash