--- hyperdb.py.firstpatch	2006-01-16 11:26:23.424185278 +0100
+++ hyperdb.py	2006-01-16 11:29:05.984102835 +0100
@@ -639,6 +639,16 @@
         return props[0]
 
     def orderprop (self):
+        """Return the property name to use for sorting for the given node.
+
+        This method computes the property for sorting. 
+        It tries the following in order:
+
+        0. self._orderprop if set
+        1. "order" property
+        2. self.labelprop ()
+        """
+
         if hasattr (self, '_orderprop') :
             return self._orderprop
         props = self.getprops ()