<html>
<body>
<h1>The Document Object</h1>
<h2>The domConfig Property</h2>
<p>The DOM configuration of this document is:</p>
<p id="demo"></p>
<p>The domConfig property is deprecated. It returns <b>undefined</b> in all new browsers.</p>
<script>
document.getElementById("demo").innerHTML = document.config;
</script>
</body>
</html>