title: How to rescale image node?
body: <p>Without using HTML, what is a straightforward way to resize external images used in a GraphViz document? 
  For example, with the following:</p>
  
  <pre><code>somenode [size=1 image="littleperson.png", label=""];
  </code></pre>
  
  <p>How can the image be made smaller? [Preferably without HTML, using HTML if it's most straightforward/unavoidable.]</p>
  
  <p>I'm not having much luck with HTML:</p>
  
  <pre><code>somenode [label=&lt;&lt;IMG SRC="littleperson.png" /&gt;&gt;];
  </code></pre>
  
  <p>Throws back an error. </p>