<!--
@BLINK-ALLOW:hierarchicalLevel*
-->
<html>
<body>
<h2>Heading 2, no tabIndex</h2>
<h1 tabIndex="-1">Heading 1, tabIndex of negative 1</h1>
<h3 tabIndex="0">Heading 3, tabIndex of 0</h3>
<h4 tabIndex="1">Heading 4, tabIndex of 1</h4>
</body>
</html>