<DataSource	ID="DrawGroup" inheritsFrom="DrawItem" Constructor="DrawGroup" >
    <fields>
        <field name="useGroupRect" type="boolean" title="Use Group Rect"/>
        <field name="left" type="integer" title="Left"/>
        <field name="top" type="integer" title="Top"/>
        <field name="width" type="integer" title="Width"/>
        <field name="height" type="integer" title="Height"/>
        <field name="drawItems"  type="DrawItem" title="Draw Items" multiple="true"/>
    </fields>
</DataSource>
