+Supported options for
+.B compact
+include
+
+.RS 4
+.TP 4
+.BR "\-\-backup=" <directory>
+
+Save the current database to the given directory before replacing it
+with the compacted database. The backup directory must not exist and
+it must reside on the same mounted filesystem as the current database.
+
+.RE
+
+.RS 4
+.TP 4
+.BR \-\-quiet
+
+Do not report database compaction progress to stdout.
+
+.RE
+