PreparingDevelopmentEnvironmentCC8.md

-The following steps are can be followed to install a development CMSOS for CentOS8.
+The following steps can be followed to install a development CMSOS/CentOS8 platform.
 
 1. Install a machine with CentOS8
 
@@ -61,14 +61,14 @@ enabled=1
 % export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/opt/xdaq/lib
 ```
 
-6. Enable port number on host (optional)
+6. Enable port number on host (optional) in order to access XDAQ executive with your browser
 
 ```
 # firewall-cmd --zone=public --permanent --add-port 8080/tcp
 # firewall-cmd --reload
 ```
 
-7. Run XDAQ executive on port 8080
+7. Run XDAQ executive on port 8080 enabled
 
 ```
 % /opt/xdaq/bin/xdaq.exe -p 8080