To install POE::Component::WebService::Validator::HTML::W3C, copy and paste the appropriate command in to your terminal.
cpanm
cpanm POE::Component::WebService::Validator::HTML::W3C
CPAN shell
perl -MCPAN -e shell install POE::Component::WebService::Validator::HTML::W3C
For more information on module installation, please visit the detailed CPAN module installation guide.