<Grid>
  <Body>
    <B>
      <I id="r1" A="1. row" Expanded="0" Count='3'/>
      <I id="r2" A="2. row" Expanded="0" Count='1'/>
      <I id="r3" A="3. row" Expanded="0" Count='2'/>
    </B>
    <B id="b2" Count="2" Name="Middle" Title='Only two rows'/>
    <B id="b3" Count="3" Name10="6. row" Name20='8. row'/>
  </Body>
</Grid>
