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