<?xml version="1.0" encoding="UTF-8"?>
<map xml:lang="en" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <topicref xlink:href="topic1.xml">
    <topicref xlink:href="topic2.xml"/>
    <topicref xlink:href="task1.xml"/>
  </topicref>
</map>

