These are the CGI:: modules for perl5, for use in writing CGI scripts.      

Online documentation of these modules as well as related modules (such
as the earlier CGI.pm module)  can be found at:

WWW: http://www-genome.wi.mit.edu/ftp/pub/software/WWW/CGIperl/

Many examples of CGI scripts of various degrees of complexity can be
found at:

        http://www-genome.wi.mit.edu/WWW/examples/Ch9/