<?xml version="1.0" standalone="yes"?>
<svg xmlns="http://www.w3.org/Graphics/SVG/svg-19990412.dtd" width="4in" height="3in">
  <defs>
    <private xmlns:myapp="http://mycompany/mapapp">
      <myapp:piechart title="Sales by Region">
        <myapp:piece label="Northern Region" value="1.23"/>
        <myapp:piece label="Eastern Region" value="2.53"/>
        <myapp:piece label="Southern Region" value="3.89"/>
        <myapp:piece label="Western Region" value="2.04"/>
<!-- Other private data goes here -->
      </myapp:piechart>
    </private>
  </defs>
  <desc>This chart includes private data in another namespace
  </desc>
<!-- In here would be the actual graphics elements which
       draw the pie chart -->
</svg>