<?xml version="1.0" ?> <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd"> <book> <title>Swiften Developer's Guide</title> <chapter> <title>Introduction</title> <para> This is an introduction </para> <sect1> <title>Section</title> <para> This is a section </para> </sect1> </chapter> </book>