document the DeNovoCloser

modelling/doc/monte_carlo.rst

@@ -419,6 +419,19 @@ functionality of :class:`CloserBase`.
   :returns:             Whether closing was successful
 
 
+.. class:: DeNovoCloser
+
+  In case of sampling a full stretch, you dont have external constraints. The 
+  closer has a rather boring job in this case.
+
+  .. method:: Close(actual_positions,closed_positions)
+
+    Does absolutely nothing, except copying over the coordinates from
+    *actual_positions* to *closed_positions* and return true.
+
+
+
+        
 .. _mc-scorer-object:
 
 Scorer Object