+=over
+
+=item --all[=<local|remote>]
+
+C<--all> updates all saved searches (listed in L<lei-ls-search(1)>).
+C<--all=local> only updates local mailboxes, C<--all=remote> only
+updates remote mailboxes (currently C<imap://> and C<imaps://>).
+
+=back
+