Description element for ApplyType

Hi,

I am currently writing a web based XACML GUI editor which allows end 
users and management types to dig down into policy and make somewhat 
easier modifications then editing raw XML.

While undertaking this exercise it occurs to me that it would be useful 
to allow a policy editor to describe each task an apply is undertaking 
in addition to the description of the overall rule.

My initial thoughts (based on 2.0 schema) was to have something like:

<xs:complexType name="ApplyType">
		<xs:complexContent>
			<xs:extension base="xacml:ExpressionType">
				<xs:sequence>
					<xs:element ref="xacml:Description" minOccurs="0"/>
					<xs:element ref="xacml:Expression" minOccurs="0" 
maxOccurs="unbounded"/>
				</xs:sequence>
				<xs:attribute name="FunctionId" type="xs:anyURI" use="required"/>
			</xs:extension>
		</xs:complexContent>
	</xs:complexType>

I realize this only a small thing but I think it would be beneficial, 
over to you for comment.

regards,
Bradley
--
Bradley Beddoes
Lead Software Architect
Intient Pty Ltd