<?xml version="1.0"?> <chapter> <p>a simple test</p> <p>multiple tests</p> <p>a diff<em>i</em>cult one</p> <p><p>a span</p>n<p>ing one</p></p> <p><p>and an unbal</p><empty/>anced test</p> <p>for empty string <seq>123</seq></p> </chapter>