<!DOCTYPE html>
<title>Invalid languages</title>
<link rel="author" title="Ms2ger" href="mailto:ms2ger@gmail.com">
<meta name="flags" content="css21">
<style>#testp { color: green; }</style>
<body>
<div id="test">
<p id="testp" lang="xyzzy">ABC</p>
</div>