Licallo/Troubleshooting.md

@@ -53,7 +53,7 @@ unset I_MPI_PMI_LIBRARY
 mpirun -n $SLURM_NTASKS ./dice
 ```
 ## X11 Forwarding
-### On mac OS : **xquartz** is mandatory to use X11 applications
+### On mac OS : [xquartz](https://en.wikipedia.org/wiki/XQuartz) is mandatory to use X11 applications
 
 **Symptom**
 
@@ -75,10 +75,9 @@ Edit the `/etc/ssh_config` file and add/changed line:
 XAuthLocation /opt/X11/bin/xauth
 ```
 
-**Explanation**
+**Explanation** ([source](https://stackoverflow.com/questions/27384725/ssh-x-warning-untrusted-x11-forwarding-setup-failed-xauth-key-data-not-gener))
 
 `ssh -X` should work since **XQuartz**, once enabled, uses xauth.
 he only problem is that *ssh* is looking for xauth in `/usr/X11R6/bin` instead of `/opt/X11/bin` as it is on macOS with **XQuartz**
 
-[source](https://stackoverflow.com/questions/27384725/ssh-x-warning-untrusted-x11-forwarding-setup-failed-xauth-key-data-not-gener)