Licallo/Troubleshooting.md

@@ -55,8 +55,14 @@ mpirun -n $SLURM_NTASKS ./dice
 ## X11 Forwarding
 ### On mac os : xquartz is mandatory to use X11 applications
 
+**Symptom**
+
+On mac, impossible to use a graphic page
+
 **Solution**
 
+```
+...
 edit ssh_config
 add /changed line
 XAuthLocation /opt/X11/bin/xauth
@@ -65,5 +71,6 @@ explications :
 ssh -X should work since XQuartz, once enabled, uses xauth.
 he only problem is that ssh is looking for xauth in /usr/X11R6/bin and on macOS with XQuartz it is in /opt/X11/bin
 
+```
 source: https://stackoverflow.com/questions/27384725/ssh-x-warning-untrusted-x11-forwarding-setup-failed-xauth-key-data-not-gener