diff -u -r1.1 -r1.2
--- lcdd_sensitive_detectors.xsd	29 Aug 2005 17:26:14 -0000	1.1
+++ lcdd_sensitive_detectors.xsd	27 Sep 2005 00:11:34 -0000	1.2
@@ -65,6 +65,14 @@

 	<xs:sequence>
 	  <xs:element minOccurs="0" maxOccurs="1" ref="segmentation"/>
 	</xs:sequence>

+	<xs:attribute name="hit_aggregation" default="id">
+	  <xs:simpleType>
+	    <xs:restriction base="xs:string">
+	      <xs:enumeration value="id" />
+	      <xs:enumeration value="position" />
+	    </xs:restriction>
+	  </xs:simpleType>
+	</xs:attribute>

       </xs:extension>
     </xs:complexContent>
   </xs:complexType>

@@ -113,13 +121,8 @@

 	    This type of SD ignore the ecut attribute, because this will often be 0 in a vacuum.
 	  </xs:documentation>
 	</xs:annotation>

-	<!--
-	    <xs:attribute name="kill_tracks" type="xs:boolean" default="false" />
-	-->

       </xs:extension>
     </xs:complexContent>

-    <!--
-    -->

   </xs:complexType>
 
   <xs:element name="scorer" substitutionGroup="sd" type="ScorerType">