The  Common  Gateway  Interface is a way to create dynamic
web pages.  It defines rules  for  interaction  between  a
program  and  the web server while the server talks to the
client.  cgilib  provides  a  library  of CGI routines:
cgiDebug, cgiFree, cgiFreeList, cgiGetCookie,
cgiGetCookies, cgiGetValue, cgiGetVariables,
cgiHeader, cgiInit, cgiRedirect, cgiSetHeader,
cgiSetType.