+=head1 OPTIONS
+
+=over
+
+=item --prune[=<local|remote>]
+
+C<--prune> will forget saved searches if the C<OUTPUT> no longer
+exists. C<--prune=local> only prunes local mailboxes,
+C<--prune=remote> only prunes remote mailboxes (currently
+C<imap://> and C<imaps://>).
+
+=back
+