For fun, here's a link: Back to the Examples.

There is an important caveat here: the links in included files must be absolute in one way or another. In the header, the link specified is actually "/mytools/mailserf", which is the location of the MailSerf home page relative to the top of the local web filespace. In the footer, the link specified is "http://gromit.callamer.com/mytools/mailserf/ex_finc.html", which is a complete URL. So, for URLs to be absolute, they must start with a method and hostname, like "http://gromit.callamer.com"; for paths to be absolute in this context, they should start with a slash, like "/mytools/mailserf".

Without making paths and URLs absolute, the specified files will most likely be looked for relative to the directory that mailserf is run from; in this case, it would be http://gromit.callamer.com/cgi-bin/. That's probably not what you want.