<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN"
  "http://www.boost.org/tools/boostbook/dtd/boostbook.dtd">
<section xmlns:xi="http://www.w3.org/2001/XInclude" id="variant.tutorial">

<title>Tutorial</title>
  <xi:include href="basic.xml"/>
  <xi:include href="advanced.xml"/>

</section>