<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"  
            xmlns:svg="http://www.w3.org/2000/svg"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns 
                                graphml+svg.xsd">
  <key id="k0" for="node">
    <default>
      <svg:svg width="5cm" height="4cm" version="1.1">
        <svg:desc>Default graphical representation for nodes</svg:desc>
        <svg:rect x="0.5cm" y="0.5cm" width="2cm" height="1cm"/>
      </svg:svg>
    </default>
  </key>  
  <key id="k1" for="edge">
    <desc>Graphical representation for edges</desc>
  </key>  
  <graph edgedefault="directed">
    <node id="n0">
      <data key="k0">
        <svg:svg width="4cm" height="8cm" version="1.1">
          <svg:ellipse cx="2cm" cy="4cm" rx="2cm" ry="1cm" />
        </svg:svg>  
      </data>
    </node>
    <node id="n1" />
    <edge source="n0" target="n1">
      <data key="k1">
        <svg:svg width="12cm" height="4cm" viewBox="0 0 1200 400">
          <svg:line x1="100" y1="300" x2="300" y2="100"
           stroke-width="5"  />
        </svg:svg>
      </data>
    </edge>
  </graph>
</graphml>