in Ignition 8.3 svg icon library are in folder:
C:\Program Files\Inductive Automation\Ignition\data\config\resources\core\com.inductiveautomation.perspective\icons\
Previously in 8.1 I remenber that svg library added was not synchronized between Master and Backup gateway.
@paul-griffith Do you know if it change in 8.3 with the new resource file manager ?
If not, it could still be valuable if it's possible.
@Documentation path has to be update in the doc...