<Grid>
<Cfg id='Calc4' MainCol='Data'/>
<Cols>
      <C Name='Data' Type='Int' Width='120'/>
      <C Name='Result' Type='Int' Formula='Data*Data-1'/>
</Cols>
<Def>
<D Name='Tree' Calculated='1' DataFormula='count()' ResultFormula='sum()' DataFormat='Count=######'/>
</Def>
<Body>
<B>
<I Def='Tree'>
	<I Data='10'/>
	<I Data='-5'/>
</I>
<I Def='Tree'>
	<I Def='Tree'>
		<I Data='0'/>
		<I Data='8'/>
	</I>
	<I Data='5'/>
	<I Data='-1'/>
</I>
</B>
</Body>
<Foot>
<I Def='Tree'/>
</Foot>
</Grid>