This is Perl module WWW::Shorten::RevCanonical. INSTALLATION WWW::Shorten::RevCanonical installation is straightforward. If your CPAN shell is set up, you should just be able to do % cpan WWW::Shorten::RevCanonical Download it, unpack it, then build it as per the usual: % perl Makefile.PL % make && make test Then install it: % make install DOCUMENTATION WWW::Shorten::RevCanonical documentation is available as in POD. So you can do: % perldoc WWW::Shorten::RevCanonical to read the documentation online with your favorite pager. Tatsuhiko Miyagawa