When a CGI is invoked, you can pass query string as part of the URL that invokes
the CGI. The query string consists of everything that follows a question mark (?)
in the URL. Parameters must be encoded according to HTTP rules, in particular, an
encoded character is replaced with the string %xx where xx is the
hexadecimal value of the encoded character.
The following links call the CGI /cgi-bin/examples/cgi_cgl.vi which simply
generates an HTML document with the contents of the parameter.