1<?xml version="1.0"?>
2<chapter>
3 <p>a simple test</p>
4 <p>multiple tests</p>
5 <p>a diff<em>i</em>cult one</p>
6 <p><p>a span</p>n<p>ing one</p></p>
7 <p><p>and an unbal</p><empty/>anced test</p>
8 <p>for empty string <seq>123</seq></p>
9</chapter>
10