<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="pmathml.xsl"?>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:pref="http://www.w3.org/2002/Math/preference"
      pref:renderer="css">
  <head>...</head>
  <body>
    <h1>Example</h1>
    ....
    <math xmlns="http://www.w3.org/1998/Math/MathML">
      <msqrt>
    <mn>45</mn>
  </msqrt>
    </math>
  </body>
</html>
