We tried, but could not find /doku.php?id=doku.php.faq:systemadmin:what_is_the_best_way_to_backup_my_citadel_installation&do=login§ok=90a9cf1ccb028e1e6f5ccdcf5e6bac27
But hey, you don't have to leave empty handed!
Here are some things you can try instead: