test/SVG/private.xml

<?xml version="1.0" standalone="yes"?>
<svg width="4in" height="3in"
 xmlns = 'http://www.w3.org/Graphics/SVG/svg-19990412.dtd'>
  <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>