\section{CGI scripts}
CGI (Common Gateway Interface) scripts are the way one has to 
interface a Web {\em form\/} and some script, say, an IDL one.
It is not trivial to write such a CGI script from scratch.
I have been using the 
\linkf{{\tt cgi-lib.pl}}
{http://www.bio.cam.ac.uk/cgi-lib/}
Perl library.
You can view the source code for my major CGI script
\linkf{{\tt script1.cgi}}
{http://www.astro.ku.dk/\~{}milvang/cgi-bin/script1.cgi.txt}.
