<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>+ expand source</title>
</head>
<body>
<h1>PHP Code Example</h1>
<p><?php echo 'Hello World!'; ?></p>
<p>This line is highlighted.</p>
<div class="foobar">
This is an
example of smart
tabs.
</div>
<p><a href="http://wordpress.org/">WordPress</a></p>
</body>
</html>
