... Invoking a CGI Program . ... To open a document in your browser, use a URL that specifies an absolute or relative location for the document. An absolute location has the form: . ... To open a local file in your web browser, use a URL that has the form: . ... mailto: address For example: . ... http://hoohoo.ncsa.uiuc.edu:80/cgi/overview.html To specify a URL that invokes a CGI program, specify the location of the CGI program, followed by a query string which contains the arguments for the program. ...