<attributeGroup name="simpleLink">
  <!-- Remove all but xlink:href from profile
		<attribute name="type" type="string" fixed="simple" form="qualified"/>
		-->
  <attribute ref="xlink:href" use="optional"/>
  <!-- Remove all but xlink:href from profile
		<attribute ref="xlink:role" use="optional"/>
		<attribute ref="xlink:arcrole" use="optional"/>
		<attribute ref="xlink:title" use="optional"/>
		<attribute ref="xlink:show" use="optional"/>
		<attribute ref="xlink:actuate" use="optional"/>
		-->
</attributeGroup>