1<?xml version="1.0" encoding="utf-8"?> 2<!DOCTYPE library PUBLIC "-//Boost//DTD BoostBook XML V1.0//EN" 3 "http://www.boost.org/tools/boostbook/dtd/boostbook.dtd"> 4<!-- 5 Copyright 2003, Eric Friedman, Itay Maman. 6 7 Distributed under the Boost Software License, Version 1.0. (See accompanying 8 file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 9--> 10<section xmlns:xi="http://www.w3.org/2001/XInclude" id="variant.tutorial"> 11 12<title>Tutorial</title> 13 <xi:include href="basic.xml"/> 14 <xi:include href="advanced.xml"/> 15 16</section> 17