+If true, mark backup(s) as protected.
++
+NOTE: Requires option(s): `storage`
+
+`--prune-backups` `[keep-all=<1|0>] [,keep-daily=<N>] [,keep-hourly=<N>] [,keep-last=<N>] [,keep-monthly=<N>] [,keep-weekly=<N>] [,keep-yearly=<N>]` ('default =' `keep-all=1`)::
+
+Use these retention options instead of those from the storage configuration.
+
+`--quiet` `<boolean>` ('default =' `0`)::
+
+Be quiet.
+
+`--remove` `<boolean>` ('default =' `1`)::
+
+Prune older backups according to 'prune-backups'.