Index: trunk/data/maps.xsd
===================================================================
--- trunk/data/maps.xsd	(revision 7990)
+++ trunk/data/maps.xsd	(revision 7991)
@@ -54,4 +54,12 @@
 			<xs:extension base="xs:string">
 				<xs:attribute name="mandatory" type="xs:boolean" use="optional" />
+			</xs:extension>
+		</xs:simpleContent>
+	</xs:complexType>
+
+	<xs:complexType name="description">
+		<xs:simpleContent>
+			<xs:extension base="xs:string">
+				<xs:attribute name="lang" type="xs:string" use="required" />
 			</xs:extension>
 		</xs:simpleContent>
@@ -600,5 +608,5 @@
 						<xs:element name="name" minOccurs="1" maxOccurs="1" type="xs:string" />
 						<!-- A description of the imagery source -->
-						<xs:element name="description" minOccurs="0" maxOccurs="1" type="xs:string" />
+						<xs:element name="description" minOccurs="0" type="tns:description" />
 						<!-- A unique id for the imagery source -->
 						<xs:element name="id" minOccurs="0" maxOccurs="1" type="tns:id" />