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=item L_ERROR

Return with this value whenever something bad has happened.  By bad, I mean something
that will prevent you to complete the required task and that some form of error
should be generated in the logs.

=item L_DECLINED

return with this value in the B<initialize> routine to indicate you are not interested
in being called to answer queries for that package.  How you decide this is up to 
you.

=back

Remember to return B<undef> when a search retrieves nothing and all will be ok.

=head1 SEE ALSO

perl(1), L<Apache>(3), L<Apache::Language>(3).