diff -u -r1.1 -r1.2
--- lcdd_display.xsd	29 Aug 2005 17:26:14 -0000	1.1
+++ lcdd_display.xsd	17 Sep 2006 00:14:59 -0000	1.2
@@ -32,20 +32,35 @@

     <xs:attribute name="visible" type="xs:boolean"/>
     <xs:attribute name="show_daughters" type="xs:boolean"/>
 

-    <xs:attribute name="line_style" type="xs:string">

+    <xs:attribute name="line_style">

       <xs:annotation>
 	<xs:documentation>

-	  valid values = "unbroken", "dashed" or "dotted"

+	  The line style of the volume.
+	  Valid values are unbroken, dashed, and dotted.

 	</xs:documentation>
       </xs:annotation>

+      <xs:simpleType>
+	<xs:restriction base="xs:string">
+	  <xs:enumeration value="unbroken"/>
+	  <xs:enumeration value="dashed"/>
+	  <xs:enumeration value="dotted"/>
+	</xs:restriction>
+      </xs:simpleType>

     </xs:attribute>
 

-    <xs:attribute name="drawing_style" type="xs:string">

+    <xs:attribute name="drawing_style">

       <xs:annotation>
 	<xs:documentation>

-	  valid values = "wireframe" or "solid"

+	  The draw style of the volume.
+	  Valid values are wireframe or solid.

 	</xs:documentation>

-      </xs:annotation>      

+      </xs:annotation>
+      <xs:simpleType>
+	<xs:restriction base="xs:string">
+	  <xs:enumeration value="wireframe"/>
+	  <xs:enumeration value="solid"/>
+	</xs:restriction>
+      </xs:simpleType>

     </xs:attribute>
 
   </xs:complexType>