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.