Name: Anonymous 2010-11-12 16:27
<script>
</script>
<operator name=fact>
<arglist>
<symbol name=x>
</arglist>
<if>
<lessthan>
<operand>x
<operand>2
</lessthan>
<positive>
<return>1</return>
<negative>
<return>
<multiply>
<operand>x
<operand><fact>
<subtract>
<operand>x
<operand>1
</subtract>
</fact>
</multiply>
</return>
</if>
</operator>