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