Building html documentation

The instructions for building html documentation make the assumption that
docbook-dsssl (with perhaps other pieces) is already installed. As I'm fond
of saying, the assumption is a lethal weapon.

Could some kind soul post a URL with *COMPLETE* instructions for what to
download and how to install it assuming that none of the docbook-whatever
pieces are installed?

The install instructions with the download of docbook-dsssl make no sense
unless some other stuff is already installed.

Grr, the OpenBSD port of textproc/docbook-dsssl seems to be broken ...

-Thanks, Jim