<html>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<body>
<p>The following is a test for DOM manipulation within &lt;ruby&gt;: Inserting a new text before a &lt;rt&gt; element</p>
<br>
<br>
<p>&lt;ruby&gt; is defined in the <ruby>HT<rt>Hyper-text</rt>ML<rt>Markup Language</rt>5</ruby> spec.</p>
</body>
</html>