diff --git a/cumulus/src/plugins/alpha/block/hfns.py b/cumulus/src/plugins/alpha/block/hfns1.py
similarity index 100%
rename from cumulus/src/plugins/alpha/block/hfns.py
rename to cumulus/src/plugins/alpha/block/hfns1.py
diff --git a/hurricane/src/isobar/PyEntity.cpp b/hurricane/src/isobar/PyEntity.cpp
index a21469d5..bf752116 100644
--- a/hurricane/src/isobar/PyEntity.cpp
+++ b/hurricane/src/isobar/PyEntity.cpp
@@ -1,14 +1,14 @@
 // -*- C++ -*-
 //
 // This file is part of the Coriolis Software.
-// Copyright (c) UPMC 2010-2018, All Rights Reserved
+// Copyright (c) SU 2010-2020, All Rights Reserved
 //
 // +-----------------------------------------------------------------+ 
 // |                   C O R I O L I S                               |
 // |    I s o b a r  -  Hurricane / Python Interface                 |
 // |                                                                 |
 // |  Author      :                   Jean-Paul Chaput               |
-// |  E-mail      :      Jean-Paul.Chaput@asim.lip6.fr               |
+// |  E-mail      :           Jean-Paul.Chaput@lip6.fr               |
 // | =============================================================== |
 // |  C++ Module  :       "./PyEntity.cpp"                           |
 // +-----------------------------------------------------------------+
@@ -47,55 +47,38 @@ extern "C" {
 
 #define  METHOD_HEAD(function)   GENERIC_METHOD_HEAD(Entity,entity,function)
 
-
-  // +-------------------------------------------------------------+
-  // |                "PyEntity" Attribute Methods                 |
-  // +-------------------------------------------------------------+
-
-  DirectGetUIntAttribute(PyEntity_getId, getId, PyEntity, Entity)
+  GetBoundStateAttribute(PyEntity_isPyBound,      PyEntity,Entity)
+  DirectGetUIntAttribute(PyEntity_getId    ,getId,PyEntity,Entity)
   DBoDestroyAttribute(PyEntity_destroy ,PyEntity)
 
 
-  // ---------------------------------------------------------------
-  // Attribute Method  :  "PyEntity_getCell ()"
-
-  static PyObject* PyEntity_getCell ( PyEntity *self ) {
-    cdebug_log(20,0) << "PyEntity_getCell ()" << endl;
-
+  static PyObject* PyEntity_getCell ( PyEntity *self )
+  {
+    cdebug_log(20,0) << "PyEntity_getCell()" << endl;
     Cell* cell = NULL;
-    
     HTRY
-    METHOD_HEAD ( "Entity.getCell()" )
-    cell = entity->getCell ();
+      METHOD_HEAD( "Entity.getCell()" )
+      cell = entity->getCell();
     HCATCH
-
-    return PyCell_Link ( cell );
+    return PyCell_Link( cell );
   }
 
 
-  // ---------------------------------------------------------------
-  // PyEntity Attribute Method table.
-
   PyMethodDef PyEntity_Methods[] =
     { { "getCell"              , (PyCFunction)PyEntity_getCell       , METH_NOARGS , "Returns the entity cell." }
     , { "getId"                , (PyCFunction)PyEntity_getId         , METH_NOARGS , "Returns unique object (DBo) identifier." }
+    , { "isBound"              , (PyCFunction)PyEntity_isPyBound     , METH_NOARGS , "Returns true if the Entity is bounded to it's Hurricane counterpart." }    
     , { "destroy"              , (PyCFunction)PyEntity_destroy       , METH_NOARGS
                                , "Destroy associated hurricane object, the python object remains." }
-    , {NULL, NULL, 0, NULL}           /* sentinel */
+    , {NULL, NULL, 0, NULL}    /* sentinel */
     };
 
 
-  // +-------------------------------------------------------------+
-  // |                 "PyEntity" Object Methods                   |
-  // +-------------------------------------------------------------+
-
   DBoDeleteMethod(Entity)
   PyTypeObjectLinkPyType(Entity) 
 
-
 #else  // End of Python Module Code Part.
 
-
 // +=================================================================+
 // |              "PyEntity" Shared Library Code Part                |
 // +=================================================================+
@@ -107,44 +90,45 @@ extern "C" {
   // No PyEntity should ever be created, it's not a terminal object
   // of the class hierarchy. Instead create the real underlying PyObject.
 
-  PyObject* PyEntity_NEW ( Entity* entity ) {
-    if ( !entity ) {
-      PyErr_SetString ( HurricaneError, "Invalid Entity (bad occurrence)" );  \
+  PyObject* PyEntity_NEW ( Entity* entity )
+  {
+    if (not entity) {
+      PyErr_SetString( HurricaneError, "Invalid Entity (bad occurrence)" );
       return NULL;
     }
 
-    Cell* cell = dynamic_cast<Cell*>(entity);
-    if ( cell ) return PyCell_Link ( cell );
+    Cell* cell = dynamic_cast<Cell*>( entity );
+    if (cell) return PyCell_Link( cell );
 
-    Instance* instance = dynamic_cast<Instance*>(entity);
-    if ( instance ) return PyInstance_Link ( instance );
+    Instance* instance = dynamic_cast<Instance*>( entity );
+    if (instance) return PyInstance_Link( instance );
 
-    Reference* reference = dynamic_cast<Reference*>(entity);
-    if ( reference ) return PyReference_Link ( reference );
+    Reference* reference = dynamic_cast<Reference*>( entity );
+    if (reference) return PyReference_Link( reference );
 
-    RoutingPad* rp = dynamic_cast<RoutingPad*>(entity);
-    if ( rp ) return PyRoutingPad_Link ( rp );
+    RoutingPad* rp = dynamic_cast<RoutingPad*>( entity );
+    if (rp) return PyRoutingPad_Link( rp );
 
-    Horizontal* horizontal = dynamic_cast<Horizontal*>(entity);
-    if ( horizontal ) return PyHorizontal_Link ( horizontal );
+    Horizontal* horizontal = dynamic_cast<Horizontal*>( entity );
+    if (horizontal) return PyHorizontal_Link( horizontal );
     
-    Vertical* vertical = dynamic_cast<Vertical*>(entity);
-    if ( vertical ) return PyVertical_Link ( vertical );
+    Vertical* vertical = dynamic_cast<Vertical*>( entity );
+    if (vertical) return PyVertical_Link( vertical );
 
-    Pad* pad = dynamic_cast<Pad*>(entity);
-    if ( pad ) return PyPad_Link ( pad );
+    Pad* pad = dynamic_cast<Pad*>( entity );
+    if (pad) return PyPad_Link( pad );
     
-    Contact* contact = dynamic_cast<Contact*>(entity);
-    if ( contact ) return PyContact_Link ( contact );
+    Contact* contact = dynamic_cast<Contact*>( entity );
+    if (contact) return PyContact_Link( contact );
     
-    Plug* plug = dynamic_cast<Plug*>(entity);
-    if ( plug ) return PyPlug_Link ( plug );
+    Plug* plug = dynamic_cast<Plug*>( entity );
+    if (plug) return PyPlug_Link( plug );
     
-    Pin* pin = dynamic_cast<Pin*>(entity);
-    if ( pin ) return PyPin_Link ( pin );
+    Pin* pin = dynamic_cast<Pin*>( entity );
+    if (pin) return PyPin_Link( pin );
     
-    Net* net = dynamic_cast<Net*>(entity);
-    if ( net ) return PyNet_Link ( net );
+    Net* net = dynamic_cast<Net*>( entity );
+    if (net) return PyNet_Link( net );
     
     Py_RETURN_NONE;
   }