1  <?xml version="1.0" standalone="no"?>
 2  <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG April 1999//EN" 
 3    "http://www.w3.org/Graphics/SVG/svg-19990412.dtd">
 4  <svg width="4in" height="3in">
 5    <desc>Groups can nest
 6    </desc>
 7    <g>
 8       <g>
 9         <g>
10         </g>
11       </g>
12     </g>
13  </svg>