347496-1.xhtml
<html xmlns="http://www.w3.org/1999/xhtml">
<body onload="document.getElementById('table').setAttribute('rowlines', 'dashed')">
<div><math xmlns="http://www.w3.org/1998/Math/MathML" display="block">
<mfenced open="[" close="]">
<mtable id="table">
<mtr>
<mtd><mi>x</mi></mtd>
<mtd><mi>y</mi></mtd>
</mtr>
<mtr>
<mtd><mi>z</mi></mtd>
<mtd><mi>w</mi></mtd>
</mtr>
</mtable>
</mfenced>
</math></div>
</body>
</html>
