<po id="43871" submitted="2001-10-05">
   <billTo id="addr-1">
      <company>The Skateboard Warehouse</company>
      <street>One Warehouse Park</street>
      <city>Boston</city>
      <state>MA</city>
      <postalCode>01775</postalCode>
   </billTo>
   <shipTo href="addr-1" />
   ...
</po>
