Changed 'data' to 'miscdata' in Object structure definition.

@@ -143,8 +143,12 @@
         <comment>Optional user friendly description of the GeoObject.</comment>
         <comment>Optional user friendly description of the GeoObject.</comment>
       </elem>
       </elem>
 
 
-      <elem name="data" type="Tensor.json" multiplicity="0..1">
-        <comment>Optional JSON data associated with this object.</comment>
+      <elem name="miscdata" type="Tensor.json" multiplicity="0..1">
+        <comment>Optional miscellaneous JSON data associated with this object. This field is
+        provided to add additional non-typed data to the object, which can be application specific.
+        Should multiple applications share this data, then likely an updated XID definition would be more
+        appropriate.
+        </comment>
       </elem>
       </elem>
     </struct>
     </struct>