one for which debian/foo files can be used instead of the usual
debian/package.foo files.
+=item B<-O=>I<option|bundle>
+
+This is used by L<dh(1)> when passing user-specified options to all the
+commands it runs. If the command supports the specified option or option
+bundle, it will take effect. If the command does not support the option (or
+any part of an option bundle), it will be ignored.
+
=back
=head1 COMMON DEBHELPER OPTIONS