Copyright (c) 2001-2002 by Jim Menard <jimm@io.com>

Released under the same license as Ruby. See www.ruby-lang.org/en/LICENSE.txt.

I was going to use NQXML to parse README.sgml, but I can't because SGML is not XML. For example, the DOCTYPE tag's PUBLIC identifier takes one argument in SGML but two arguments in XML, and the Docbook <xref> tag has no end tag. Therefore, README.sgml is not a legal XML document.