This is YACLML, Yet Another Common Lisp Markup Language.

The documentation can be found in the docstrings, start with the
package :it.bese.yaclml.

The mailing list for YACLML is bese-devel@common-lisp.net (the list is
shared with FiveAM, arnesi, and ucw).

All the code is Copyright (C) 2002-2005 Edward Marco Baringer.

Sharplispers update:

This version of YACLML is currently maintained at
https://github.com/sharplispers/yaclml/. It contains minor changes to
the original darcs sources from common-lisp.net in order to keep it
building on SBCL.
html generator, html template