<DataSource	ID="RelationItem" inheritsFrom="CanvasItem" Constructor="RelationItem">
	<fields>
        <field name="showEditButton"    type="boolean"/>
        <field name="editButtonDefaults"        type="Canvas" propertiesOnly="true"/>
        <field name="showRemoveButton"         type="boolean"/>
        <field name="removeButtonDefaults"  type="Canvas" propertiesOnly="true"/>

		<field name="canvas" inapplicable="true"/>
		<field name="canvasConstructor" inapplicable="true"/>
		<field name="canvasProperties" inapplicable="true"/>
	</fields>
</DataSource>
