These guys have taken a very practical approach to SGML for
technical documentation. They started with SGMLs from James Clark and
the QWERTZ DTD, which mirrors LaTeX structure. Then they added
down-translators for groff, HTML, and others. Looks promising.
Hmmm... on closer examination, this is something of a hack.
They hacked the DTD, hacked the down-translators, etc.
I like the idea of using a LaTeX-like DTD, but I think
I'll wait till this matures a little more.