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