=head1 NAME
-public-inbox-compact - compact Xapian DBs
+public-inbox-compact - compact Xapian DBs in an inbox
=head1 SYNOPSIS
writing while it operates.
It enforces the use of the C<--no-renumber> option of
-L<xapian-compact(1)>
+L<xapian-compact(1)> which is required to work with the
+rest of the public-inbox search code.
=head1 OPTIONS