text: <!DOCTYPE html>	 
  <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  	<head>
  		<meta charset="utf-8" />
  		<title>DPUB-ARIA roles allowed on h1 to h6</title>
  	</head>
  	<body>
  		<h1 role="doc-subtitle">H1 Subtitle</h1>
  		<h2 role="doc-subtitle">H2 Subtitle</h2>
  		<h3 role="doc-subtitle">H3 Subtitle</h3>
  		<h4 role="doc-subtitle">H4 Subtitle</h4>
  		<h5 role="doc-subtitle">H5 Subtitle</h5>
  		<h6 role="doc-subtitle">H6 Subtitle</h6>
  	</body>
  </html>
  