--- /dev/null
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
+ "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
+<!ENTITY % myents SYSTEM "entities.xml">
+%myents;
+]>
+
+
+<book lang="en">
+ <xi:include href="bookinfo.xml" xmlns:xi="http://www.w3.org/2001/XInclude" />
+ <xi:include href="intro.xml" xmlns:xi="http://www.w3.org/2001/XInclude" />
+</book>