Media adaptor for Perl "Plain Old Documentation" (POD), a very simple document format, which is included as a demonstration of how to quickly write a media adaptor by converting into HTML on the fly.
Spec in Perl documentation perlpod.pod. For developers, example of simple on demand translation into HTML.
List Perl POD with other man pages without format conversions by putting the pod directory (or a symbolic link to it) into some man directory in your MANPATH and rename it (call the symbolic link) "manpod".
Fully functional.
To do list: Considering adding outlining as in man pages.