http://search.cpan.org/src/MSERGEANT/XML-Parser-2.34/README
This is a Perl extension interface to James Clark's XML parser, expat.
It requires at least version 5.004 of perl and it requires that you have
release 1.95.0 or greater of expat installed. You can download expat from:
    http://sourceforge.net/projects/expat/