To install XML::IODEF::Simple::Plugin::RI_RESTRICTION, copy and paste the appropriate command in to your terminal.
cpanm
cpanm XML::IODEF::Simple::Plugin::RI_RESTRICTION
CPAN shell
perl -MCPAN -e shell install XML::IODEF::Simple::Plugin::RI_RESTRICTION
For more information on module installation, please visit the detailed CPAN module installation guide.