diff --git a/vlsisapd/src/configuration/src/CMakeLists.txt b/vlsisapd/src/configuration/src/CMakeLists.txt
index 6bdf7438..c10a50bb 100644
--- a/vlsisapd/src/configuration/src/CMakeLists.txt
+++ b/vlsisapd/src/configuration/src/CMakeLists.txt
@@ -2,50 +2,68 @@
 
                include ( ${QT_USE_FILE} )
    include_directories ( ${VLSISAPD_SOURCE_DIR}/src/configuration/src
+                         ${VLSISAPD_SOURCE_DIR}/src/openChams/src
                          ${Boost_INCLUDE_DIRS}
+                         ${PYTHON_INCLUDE_PATH}
                          ${LIBXML2_INCLUDE_DIR}
                        )
 
-                   set ( mocIncludes   vlsisapd/configuration/FilePathEdit.h
-                                       vlsisapd/configuration/ConfigurationDialog.h
-                                       vlsisapd/configuration/ParameterWidget.h
-                                       vlsisapd/configuration/ConfTabWidget.h
-                                       vlsisapd/configuration/LogWidget.h
-                                       vlsisapd/configuration/ConfigurationWidget.h
-                                       vlsisapd/configuration/ConfEditorWidget.h
+                   set ( mocIncludes     vlsisapd/configuration/FilePathEdit.h
+                                         vlsisapd/configuration/ConfigurationDialog.h
+                                         vlsisapd/configuration/ParameterWidget.h
+                                         vlsisapd/configuration/ConfTabWidget.h
+                                         vlsisapd/configuration/LogWidget.h
+                                         vlsisapd/configuration/ConfigurationWidget.h
+                                         vlsisapd/configuration/ConfEditorWidget.h
+                       )	         
+		   set ( includes        vlsisapd/configuration/Parameter.h
+                                         vlsisapd/configuration/LayoutDescription.h
+                                         vlsisapd/configuration/Configuration.h
+                       )	         
+		   set ( cpps            Parameter.cpp
+                                         LayoutDescription.cpp
+                                         Configuration.cpp
+                                         FilePathEdit.cpp
+                                         ParameterWidget.cpp
+                                         ConfTabWidget.cpp
+                                         LogWidget.cpp
+                                         ConfigurationWidget.cpp
+                                         ConfigurationDialog.cpp
+                                         ConfEditorWidget.cpp
+                       )	         
+                   set ( pycpps          PyConfiguration.cpp )
+                   set ( editorcpp       ConfEditorMain.cpp )
+				         
+          qt4_wrap_cpp ( mocCpps         ${mocIncludes} )
+     qt4_add_resources ( RCC_SRCS        Configuration.qrc )
+				         
+           add_library ( configuration   ${cpps} ${mocCpps} ${RCC_SRCS} )
+ set_target_properties ( configuration   PROPERTIES VERSION 1.0 SOVERSION 1 )
+ target_link_libraries ( configuration   ${QT_LIBRARIES}
+                                         ${PYTHON_LIBRARIES}
+                                         ${LIBXML2_LIBRARIES}
+                                         ${Boost_LIBRARIES}
                        )
-                   set ( includes      vlsisapd/configuration/Parameter.h
-                                       vlsisapd/configuration/LayoutDescription.h
-                                       vlsisapd/configuration/Configuration.h
-                       )
-                   set ( cpps          Parameter.cpp
-                                       LayoutDescription.cpp
-                                       Configuration.cpp
-                                       FilePathEdit.cpp
-                                       ParameterWidget.cpp
-                                       ConfTabWidget.cpp
-                                       LogWidget.cpp
-                                       ConfigurationWidget.cpp
-                                       ConfigurationDialog.cpp
-                                       ConfEditorWidget.cpp
-                       )
-                   set ( editorcpp     ConfEditorMain.cpp )
 
-          qt4_wrap_cpp ( mocCpps       ${mocIncludes} )
-     qt4_add_resources ( RCC_SRCS      Configuration.qrc )
-
-           add_library ( configuration ${cpps} ${mocCpps} ${RCC_SRCS} )
- set_target_properties ( configuration PROPERTIES VERSION 1.0 SOVERSION 1 )
- target_link_libraries ( configuration ${QT_LIBRARIES}
-                                       ${PYTHON_LIBRARIES}
-                                       ${LIBXML2_LIBRARIES}
-                                       ${Boost_LIBRARIES}
+ if (Boost_FOUND)
+           add_library ( pyConfiguration MODULE ${pycpps})
+ set_target_properties ( pyConfiguration PROPERTIES
+                                         OUTPUT_NAME "Cfg"
+                                         PREFIX      ""
                        )
+ target_link_libraries ( pyConfiguration configuration
+                                         ${PYTHON_LIBRARIES}
+                                         ${LIBXML2_LIBRARIES}
+                                         ${Boost_LIBRARIES}
+                       )
+               install ( TARGETS         pyConfiguration DESTINATION ${PYTHON_SITE_PACKAGES} )
+ endif(Boost_FOUND)
+
         add_executable ( vlsisapd-conf-editor ${editorcpp} )
  target_link_libraries ( vlsisapd-conf-editor configuration ${Boost_LIBRARIES} )
 
-               install ( TARGETS       configuration DESTINATION lib${LIB_SUFFIX} )
-               install ( TARGETS       vlsisapd-conf-editor DESTINATION bin )
-               install ( FILES         ${includes} ${mocIncludes}
-                                       DESTINATION include/vlsisapd/configuration ) 
+               install ( TARGETS         configuration DESTINATION lib${LIB_SUFFIX} )
+               install ( TARGETS         vlsisapd-conf-editor DESTINATION bin )
+               install ( FILES           ${includes} ${mocIncludes}
+                                         DESTINATION include/vlsisapd/configuration ) 
 
diff --git a/vlsisapd/src/configuration/src/ConfEditorMain.cpp b/vlsisapd/src/configuration/src/ConfEditorMain.cpp
index e5d18249..73209091 100644
--- a/vlsisapd/src/configuration/src/ConfEditorMain.cpp
+++ b/vlsisapd/src/configuration/src/ConfEditorMain.cpp
@@ -2,34 +2,33 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2008-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2008-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
 // x-----------------------------------------------------------------x
-// |                                                                 |
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
 // |  Author      :                    Jean-Paul CHAPUT              |
-// |  E-mail      :       Jean-Paul.Chaput@asim.lip6.fr              |
+// |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
 // |  C++ Module  :       "./ConfEditorMain.cpp"                     |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
 // x-----------------------------------------------------------------x
 
 
+#include  <cstdio>
+#include  <libxml/xmlreader.h>
+#include  <Python.h>
+
 #include  <boost/program_options.hpp>
 namespace boptions = boost::program_options;
 
 #include  <boost/filesystem/operations.hpp>
 namespace bfs = boost::filesystem;
 
-#include  <libxml/xmlreader.h>
 #include  <QtGui>
 #if (QT_VERSION >= QT_VERSION_CHECK(4,5,0)) and not defined (__APPLE__)
 #  include  <QGtkStyle>
@@ -92,6 +91,23 @@ int main ( int argc, char* argv[] )
       conf->readFromFile ( dotConfPath.string() );
     }
 
+    cout << "misc.catchCore:   " << conf->getParameter("misc.catchCore"  )->asBool() << endl;
+    cout << "kite.eventsLimit: " << conf->getParameter("kite.eventsLimit")->asInt () << endl;
+
+    bfs::path pyDotConfPath ( "./.coriolis2.init.py" );
+    if ( bfs::exists(pyDotConfPath) ) {
+      cout << "Reading python dot configuration: <" << pyDotConfPath.string() << ">." << endl;
+      Py_Initialize ();
+      FILE* fd = fopen ( pyDotConfPath.string().c_str(), "r" );
+      if ( fd ) {
+        PyRun_SimpleFile ( fd, pyDotConfPath.string().c_str() );
+        fclose ( fd );
+      } else {
+        cout << "Cannot open Python configuration file: <" << pyDotConfPath.string() << ">." << endl;
+      }
+      Py_Finalize ();
+    }
+
     ConfEditorWidget* editor = new ConfEditorWidget ();
     editor->show ();
   //editor->getConfigurationWidget()->selectTab ( "Kite" );
diff --git a/vlsisapd/src/configuration/src/ConfEditorWidget.cpp b/vlsisapd/src/configuration/src/ConfEditorWidget.cpp
index c6f67881..1baf0e7e 100644
--- a/vlsisapd/src/configuration/src/ConfEditorWidget.cpp
+++ b/vlsisapd/src/configuration/src/ConfEditorWidget.cpp
@@ -2,14 +2,13 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2010-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2010-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
-// x-----------------------------------------------------------------x
-// |                                                                 |
+// +-----------------------------------------------------------------+
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
@@ -17,10 +16,7 @@
 // |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
 // |  C++ Module  :       "./ConfEditorWidget.cpp"                   |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
-// x-----------------------------------------------------------------x
+// +-----------------------------------------------------------------+
 
 
 #include  <QAction>
@@ -91,7 +87,8 @@ namespace Cfg {
     cout << "Saving configuration file: <" << dotConfigFile << ">."<< endl;
 
   //Configuration::get()->writeToStream ( file, 0, ";misc;kite;;mauka;;" );
-    Configuration::get()->writeToStream ( file, 0 );
+    Configuration::get()->writeToStream ( file, Configuration::DriveValues|Configuration::DriveLayout, "misc" );
+  //Configuration::get()->writeToStream ( file, 0 );
   //Configuration::get()->writeToStream ( file, Configuration::DriveValues|Configuration::DriveLayout );
     file.close ();
   }
diff --git a/vlsisapd/src/configuration/src/Configuration.cpp b/vlsisapd/src/configuration/src/Configuration.cpp
index c8c16467..cd74d916 100644
--- a/vlsisapd/src/configuration/src/Configuration.cpp
+++ b/vlsisapd/src/configuration/src/Configuration.cpp
@@ -2,25 +2,21 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2008-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2008-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
-// x-----------------------------------------------------------------x
-// |                                                                 |
+// +-----------------------------------------------------------------+
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
 // |  Author      :                    Jean-Paul CHAPUT              |
-// |  E-mail      :       Jean-Paul.Chaput@asim.lip6.fr              |
+// |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
 // |  C++ Module  :       "./Configuration.cpp"                      |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
-// x-----------------------------------------------------------------x
+// +-----------------------------------------------------------------+
 
 
 #include  <cstring>
@@ -39,24 +35,6 @@ namespace {
 
   using namespace std;
   using namespace Cfg;
-    
-
-  void  tokenize ( set<string>& tokens, const string& line )
-  {
-    static std::string separators = " ;";
-           size_t      iBegin     = 0;
-           size_t      iEnd       = 0;
-
-    for ( ; iEnd < line.size() ; ++iEnd ) {
-      if ( separators.find(line[iEnd]) != std::string::npos ) {
-        if ( iBegin < iEnd )
-          tokens.insert ( line.substr(iBegin,iEnd-iBegin) );
-        iBegin = iEnd+1;
-      }
-    }
-    if ( iBegin < iEnd )
-      tokens.insert ( line.substr(iBegin,iEnd-iBegin) );
-  }
 
 
   class XmlParser {
@@ -99,6 +77,8 @@ namespace {
   {
     LIBXML_TEST_VERSION;
 
+    Configuration::pushDefaultPriority ( Parameter::ConfigurationFile );
+
     _reader = xmlReaderForFile ( _fileName.c_str(), NULL, 0 );
     if ( _reader != NULL ) {
       _status = xmlTextReaderRead ( _reader );
@@ -116,6 +96,8 @@ namespace {
     //  xmlCleanupParser (); // CF libxml2 documentation if libxml2 parser is use by the application any other time : DO NOT CALL xmlCleanupParser (at least on mac osx)
     }
 
+    Configuration::popDefaultPriority ();
+
     return (_status == 0);
   }
 
@@ -162,7 +144,6 @@ namespace {
       _parameter = _configuration->addParameter ( attrId 
                                                 , type
                                                 , _getAttributeValue("value")
-                                                , Parameter::ConfigurationFile
                                                 );
     } else {
       _parameter->setString ( _getAttributeValue("value")
@@ -288,8 +269,9 @@ namespace {
   void  XmlParser::_tabNode ()
   {
     string attrName = _getAttributeValue("name");
+    string attrId   = _getAttributeValue("id");
 
-    _configuration->getLayout().addTab ( attrName );
+    _configuration->getLayout().addTab ( attrName, attrId );
 
     _status = xmlTextReaderRead ( _reader );
     while ( _status == 1 ) {
@@ -376,6 +358,24 @@ namespace Cfg {
   using std::ofstream;
   using std::setw;
   using std::vector;
+    
+
+  void  Configuration::_tokenize ( set<string>& tokens, const string& line )
+  {
+    static std::string separators = " ;";
+           size_t      iBegin     = 0;
+           size_t      iEnd       = 0;
+
+    for ( ; iEnd < line.size() ; ++iEnd ) {
+      if ( separators.find(line[iEnd]) != std::string::npos ) {
+        if ( iBegin < iEnd )
+          tokens.insert ( line.substr(iBegin,iEnd-iBegin) );
+        iBegin = iEnd+1;
+      }
+    }
+    if ( iBegin < iEnd )
+      tokens.insert ( line.substr(iBegin,iEnd-iBegin) );
+  }
 
 
   Configuration* Configuration::_singleton = NULL;
@@ -388,6 +388,18 @@ namespace Cfg {
   }
 
 
+  Parameter::Priority  Configuration::pushDefaultPriority ( Parameter::Priority priority )
+  { return Parameter::pushDefaultPriority(priority); }
+
+
+  Parameter::Priority  Configuration::popDefaultPriority ()
+  { return Parameter::popDefaultPriority(); }
+
+
+  Parameter::Priority  Configuration::getDefaultPriority ()
+  { return Parameter::getDefaultPriority(); }
+
+
   Configuration::Configuration ()
     : _parameters()
     , _layout    (this)
@@ -426,10 +438,10 @@ namespace Cfg {
   }
 
 
-  Parameter* Configuration::addParameter ( const string&   id
-                                         , Parameter::Type type
-                                         , const string&   value
-                                         , int             priority )
+  Parameter* Configuration::addParameter ( const string&       id
+                                         , Parameter::Type     type
+                                         , const string&       value
+                                         , Parameter::Priority priority )
   {
     Parameter* p = getParameter ( id );
     if ( p != NULL ) {
@@ -520,7 +532,7 @@ namespace Cfg {
   void  Configuration::writeToStream ( ostream& out, unsigned int flags, const string& tabs ) const
   {
     set<string> tabset;
-    tokenize ( tabset, tabs );
+    _tokenize ( tabset, tabs );
 
     out << "<configuration>" << endl;
 
@@ -585,6 +597,16 @@ namespace Cfg {
         const vector<string>& slaves = p->getSlaves();
         if ( slaves.empty() ) continue;
 
+        if ( not tabset.empty() ) {
+          set<string>::iterator itab = tabset.begin();
+          for ( ; itab != tabset.end() ; ++itab ) {
+            if ( p->getId().compare(0,(*itab).size(),*itab) == 0 ) {
+              break;
+            }
+          }
+          if ( itab == tabset.end() ) continue;
+        }
+
         out << "  <group>" << endl;
         out << "    <master id=\"" << p->getId() << "\"/>" << endl;
 
@@ -595,7 +617,7 @@ namespace Cfg {
       }
     }
 
-    if ( flags & DriveLayout ) _layout.writeToStream ( out );
+    if ( flags & DriveLayout ) _layout.writeToStream ( out, tabs );
 
     out << "</configuration>" << endl;
   }
diff --git a/vlsisapd/src/configuration/src/LayoutDescription.cpp b/vlsisapd/src/configuration/src/LayoutDescription.cpp
index bf1e8ff4..63dd2d09 100644
--- a/vlsisapd/src/configuration/src/LayoutDescription.cpp
+++ b/vlsisapd/src/configuration/src/LayoutDescription.cpp
@@ -2,14 +2,13 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2010-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2010-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
-// x-----------------------------------------------------------------x
-// |                                                                 |
+// +-----------------------------------------------------------------+
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
@@ -17,10 +16,7 @@
 // |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
 // |  C++ Module  :       "./LayoutDescription.cpp"                  |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
-// x-----------------------------------------------------------------x
+// +-----------------------------------------------------------------+
 
 
 #include  "vlsisapd/configuration/LayoutDescription.h"
@@ -35,6 +31,7 @@ namespace Cfg {
   using std::endl;
   using std::string;
   using std::vector;
+  using std::set;
   using std::map;
   using std::make_pair;
   using std::ostream;
@@ -62,13 +59,13 @@ namespace Cfg {
   }
 
 
-  TabDescription* LayoutDescription::getTab ( const string& tabName )
+  TabDescription* LayoutDescription::getTab ( const string& tabName, const string& id )
   {
     for ( size_t itab=0 ; itab<_tabs.size() ; ++itab ) {
       if ( _tabs[itab]->getName() == tabName ) return _tabs[itab];
     }
 
-    addTab ( new TabDescription(this,tabName) );
+    addTab ( new TabDescription(this,tabName,id) );
     return getBackTab();
   }
   
@@ -131,12 +128,17 @@ namespace Cfg {
             break;
           case WidgetDescription::Parameter:
             Parameter* parameter = _configuration->getParameter ( widgets[iwidget]->getId() );
-            cw->addParameter ( _tabs[itab]->getName()
-                             , parameter
-                             , widgets[iwidget]->getLabel()
-                             , widgets[iwidget]->getColumn()
-                             , widgets[iwidget]->getSpan()
-                             , widgets[iwidget]->getFlags() );
+            if ( parameter ) {
+              cw->addParameter ( _tabs[itab]->getName()
+                               , parameter
+                               , widgets[iwidget]->getLabel()
+                               , widgets[iwidget]->getColumn()
+                               , widgets[iwidget]->getSpan()
+                               , widgets[iwidget]->getFlags() );
+            } else {
+              cerr << "[ERROR] LayoutDescription::buildWidget(): reference to non-existent parameter id=\""
+                   << widgets[iwidget]->getId() << "\"." << endl;
+            }
             break;
         }
       }
@@ -148,12 +150,27 @@ namespace Cfg {
   }
 
 
-  void  LayoutDescription::writeToStream ( ostream& out ) const
+  void  LayoutDescription::writeToStream ( ostream& out, const string& tabs ) const
   {
+    set<string> tabset;
+    Configuration::_tokenize ( tabset, tabs );
+
     out << "  <layout>" << endl;
 
     for ( size_t itab=0 ; itab<_tabs.size() ; ++itab ) {
-      out << "    <tab name=\"" << _tabs[itab]->getName() << "\">" << endl;
+      if ( not tabset.empty() ) {
+        set<string>::iterator isavetab = tabset.begin();
+        for ( ; isavetab != tabset.end() ; ++isavetab ) {
+          if ( _tabs[itab]->getId().compare(0,(*isavetab).size(),*isavetab) == 0 ) {
+            break;
+          }
+        }
+        if ( isavetab == tabset.end() ) continue;
+      }
+
+      out << "    <tab name=\"" << _tabs[itab]->getName()
+          <<         "\" id=\"" << _tabs[itab]->getId()
+          <<         "\">" << endl;
 
       const vector<WidgetDescription*>& widgets = _tabs[itab]->getWidgets();
       for ( size_t iwidget=0 ; iwidget<widgets.size() ; ++iwidget ) {
diff --git a/vlsisapd/src/configuration/src/Parameter.cpp b/vlsisapd/src/configuration/src/Parameter.cpp
index ecc3800f..865ce3ab 100644
--- a/vlsisapd/src/configuration/src/Parameter.cpp
+++ b/vlsisapd/src/configuration/src/Parameter.cpp
@@ -2,25 +2,21 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2008-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2008-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
-// x-----------------------------------------------------------------x
-// |                                                                 |
+// +-----------------------------------------------------------------+
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
 // |  Author      :                    Jean-Paul CHAPUT              |
-// |  E-mail      :       Jean-Paul.Chaput@asim.lip6.fr              |
+// |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
 // |  C++ Header  :       "./Parameter.cpp"                          |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
-// x-----------------------------------------------------------------x
+// +-----------------------------------------------------------------+
 
 
 #include  <iostream>
@@ -39,6 +35,31 @@ namespace Cfg {
   using std::ostringstream;
   using std::boolalpha;
   using std::hex;
+  using std::vector;
+
+
+  vector<Parameter::Priority>  Parameter::_defaultPriorities (1,Parameter::ApplicationBuiltin);
+
+
+  Parameter::Priority  Parameter::pushDefaultPriority ( Parameter::Priority priority )
+  {
+    Priority previous = _defaultPriorities.back ();
+    _defaultPriorities.push_back ( priority );
+    return previous;
+  }
+
+
+  Parameter::Priority  Parameter::popDefaultPriority ()
+  {
+    Priority previous = _defaultPriorities.back ();
+    if ( _defaultPriorities.size() > 1 )
+      _defaultPriorities.pop_back ();
+    return previous;
+  }
+
+
+  Parameter::Priority  Parameter::getDefaultPriority ()
+  { return _defaultPriorities.back(); }
 
 
   string  Parameter::typeToString  ( Parameter::Type type )
@@ -59,7 +80,7 @@ namespace Cfg {
   Parameter::Parameter ( const std::string& id
                        , Type               type
                        , const std::string& value
-                       , int                priority
+                       , Priority           priority
                        )
     : _id       (id)
     , _type     (type)
@@ -77,6 +98,7 @@ namespace Cfg {
     if ( type == Percentage ) {
       setPercentage ( asDouble() );
     }
+    if ( priority == UseDefault ) _priority = getDefaultPriority();
 
   //cerr << "New " << typeToString(_type) << " parameter " << _id << " value:" << _value << endl;
   }
@@ -140,10 +162,9 @@ namespace Cfg {
   }
 
 
-  bool  Parameter::setString ( const std::string& s, unsigned int flags, int priority )
+  bool  Parameter::setString ( const std::string& s, unsigned int flags, Priority priority )
   {
-    if ( priority < _priority ) return false;
-    _priority = priority;
+    if ( not _updatePriority(priority) ) return false;
 
     if ( (flags & TypeCheck) and (_type != String) )
       cerr << "[ERROR] Parameter::setString(): Setting " << Parameter::typeToString(_type)
@@ -154,10 +175,9 @@ namespace Cfg {
   }
 
 
-  bool  Parameter::setBool ( bool b, int priority )
+  bool  Parameter::setBool ( bool b, Priority priority )
   {
-    if ( priority < _priority ) return false;
-    _priority = priority;
+    if ( not _updatePriority(priority) ) return false;
 
     if ( _type != Bool )
       cerr << "[ERROR] Parameter::setBool(): Setting " << Parameter::typeToString(_type)
@@ -168,10 +188,9 @@ namespace Cfg {
   }
 
 
-  bool  Parameter::setInt ( int i, int priority )
+  bool  Parameter::setInt ( int i, Priority priority )
   {
-    if ( priority < _priority ) return false;
-    _priority = priority;
+    if ( not _updatePriority(priority) ) return false;
 
     if ( (_type != Int) and (_type != Enumerate)  )
       cerr << "[ERROR] Parameter::setInt(): Setting " << Parameter::typeToString(_type)
@@ -182,10 +201,9 @@ namespace Cfg {
   } 
 
 
-  bool  Parameter::setDouble ( double d, int priority )
+  bool  Parameter::setDouble ( double d, Priority priority )
   {
-    if ( priority < _priority ) return false;
-    _priority = priority;
+    if ( not _updatePriority(priority) ) return false;
 
     if ( (_type != Double) and (_type != Percentage)  )
       cerr << "[ERROR] Parameter::setDouble(): Setting " << Parameter::typeToString(_type)
@@ -196,8 +214,10 @@ namespace Cfg {
   } 
 
 
-  bool  Parameter::setPercentage ( double d, int priority )
+  bool  Parameter::setPercentage ( double d, Priority priority )
   {
+    if ( not _updatePriority(priority) ) return false;
+
     if ( (_type != Double) and (_type != Percentage)  )
       cerr << "[ERROR] Parameter::setPercentage(): Setting " << Parameter::typeToString(_type)
            << " parameter <" << _id
@@ -207,6 +227,32 @@ namespace Cfg {
   }
 
 
+  void  Parameter::setMin ( int min, Parameter::Priority priority )
+  { if (_updatePriority(priority)) { _minInt = min; setFlags(HasMin); } }
+  
+
+  void  Parameter::setMax ( int max, Parameter::Priority priority )
+  { if (_updatePriority(priority)) { _maxInt = max; setFlags(HasMax); } }
+
+
+  void  Parameter::setMin ( double min, Parameter::Priority priority )
+  { if (_updatePriority(priority)) {
+      _minDouble = min;
+      setFlags ( HasMin );
+      if (_type==Percentage) _minDouble/=100.0;
+    }
+  }
+
+
+  void  Parameter::setMax ( double max, Parameter::Priority priority )
+  { if (_updatePriority(priority)) {
+      _maxDouble = max;
+      setFlags ( HasMax );
+      if (_type==Percentage) _maxDouble/=100.0;
+    }
+  }
+
+
   bool  Parameter::_doChange ( unsigned int flags, const string& s, bool b, int i, double d )
   {
   //cerr << "_doChange: " << _id << ":" << _value << " -> \"" << s << "\"|" << b << "|" << i << "|" << d;
diff --git a/vlsisapd/src/configuration/src/PyConfiguration.cpp b/vlsisapd/src/configuration/src/PyConfiguration.cpp
new file mode 100644
index 00000000..eef7b5f5
--- /dev/null
+++ b/vlsisapd/src/configuration/src/PyConfiguration.cpp
@@ -0,0 +1,321 @@
+
+// -*- C++ -*-
+//
+// This file is part of the VSLSI Stand-Alone Software.
+// Copyright (c) UPMC/LIP6 2008-2011, All Rights Reserved
+//
+// ===================================================================
+//
+// $Id$
+//
+// +-----------------------------------------------------------------+
+// |                   C O R I O L I S                               |
+// |    C o n f i g u r a t i o n   D a t a - B a s e                |
+// |                                                                 |
+// |  Author      :                    Jean-Paul CHAPUT              |
+// |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
+// | =============================================================== |
+// |  C++ Module  :       "./PyConfiguration.cpp"                    |
+// +-----------------------------------------------------------------+
+
+
+#include <boost/python.hpp>
+#include <boost/python/suite/indexing/vector_indexing_suite.hpp>
+using namespace boost::python;
+
+#include "vlsisapd/openChams/PySTLMapWrapper.h"
+using OpenChams::map_item;
+
+#include "vlsisapd/configuration/Configuration.h"
+
+
+namespace {
+
+  using namespace Cfg;
+
+
+  template<typename EnumType>
+  struct EnumToInt {
+      static PyObject* convert ( EnumType& type )
+      { return incref ( object((int)type).ptr() ); }
+  };
+
+
+// Thin wrappers for function members overloads.
+  void  parameterSetMinInt1    ( Parameter& self, int    min ) { self.setMin(min); }
+  void  parameterSetMinDouble1 ( Parameter& self, double min ) { self.setMin(min); }
+  void  parameterSetMaxInt1    ( Parameter& self, int    max ) { self.setMax(max); }
+  void  parameterSetMaxDouble1 ( Parameter& self, double max ) { self.setMax(max); }
+
+// STL map wrapper for boost::python.
+  template<typename Map>
+  class MapWrapper {
+    public:
+      typedef typename Map::key_type    Key;
+      typedef typename Map::mapped_type Value;
+    public:
+      static Value& get    ( Map&, const Key& );
+      static void   set    ( Map&, const Key&, const Value& );
+      static void   del    ( Map&, const Key& );
+      static bool   in     ( Map&, const Key& );
+      static list   keys   ( Map& );
+      static list   values ( Map& );
+      static list   items  ( Map& );
+  };
+
+
+  inline void  KeyError () { PyErr_SetString(PyExc_KeyError, "Key not found"); }
+
+  
+  template<typename Map>
+  typename MapWrapper<Map>::Value& MapWrapper<Map>::get ( Map& m, const typename MapWrapper<Map>::Key& k )
+  {
+    static Value notFound;
+    if( m.find(k) != m.end() ) return m[k];
+    KeyError ();
+    return notFound;
+  }
+
+  template<typename Map>
+  void  MapWrapper<Map>::set ( Map& m, const MapWrapper<Map>::Key& k, const typename MapWrapper<Map>::Value& v )
+  { m[k] = v; }
+
+  template<typename Map>
+  void  MapWrapper<Map>::del ( Map& m, const typename MapWrapper<Map>::Key& k)
+  {
+    if( m.find(k) != m.end() ) m.erase(k);
+    else KeyError ();
+  }
+
+  template<typename Map>
+  bool  MapWrapper<Map>::in ( Map& m, const typename MapWrapper<Map>::Key& k )
+  { return m.find(k) != m.end(); }
+
+  template<typename Map>
+  list  MapWrapper<Map>::keys ( Map& m )
+  {
+    list l;
+    for(typename Map::iterator it = m.begin() ; it != m.end() ; ++it )
+      l.append ( it->first );
+    return l;
+  }
+
+  template<typename Map>
+  list  MapWrapper<Map>::values ( Map& m)
+  {
+    list l;
+    for( typename Map::iterator it=m.begin(); it != m.end() ; ++it )
+      l.append ( it->second );
+    return l;
+  }
+
+  template<typename Map>
+  list  MapWrapper<Map>::items ( Map& m ) {
+    list l;
+    for( typename Map::iterator it=m.begin(); it!=m.end(); ++it )
+      l.append( make_tuple(it->first,it->second) );
+    return l;
+  }
+
+
+} // End of anonymous namespace.
+
+
+namespace Cfg {
+
+
+  BOOST_PYTHON_MODULE(Cfg) {
+
+    typedef  void (Parameter::* VoidIntPrioritySign    )(int   ,Parameter::Priority)  ;
+    typedef  void (Parameter::* VoidDoublePrioritySign )(double,Parameter::Priority)  ;
+    typedef  void (Parameter::* VoidIntSign            )(int   );
+    typedef  void (Parameter::* VoidDoubleSign         )(double);
+    typedef  bool (Parameter::* BoolIntConstSign       )(int   ) const;
+    typedef  bool (Parameter::* BoolDoubleConstSign    )(double) const;
+    typedef  bool (Parameter::* BoolBoolSign           )(bool  );
+    typedef  bool (Parameter::* BoolIntSign            )(int   );
+    typedef  bool (Parameter::* BoolDoubleSign         )(double);
+    typedef  bool (Parameter::* BoolStringSign         )(std::string);
+    typedef  bool (Parameter::* BoolStringFlagsSign    )(std::string,unsigned int);
+
+  // Parameter overloaded function members.
+    BoolIntConstSign     paramCheckValueInt    = (BoolIntConstSign)   &Parameter::checkValue;
+    BoolDoubleConstSign  paramCheckValueDouble = (BoolDoubleConstSign)&Parameter::checkValue;
+    BoolStringSign       paramSetString1       = (BoolStringSign)     &Parameter::setString;
+    BoolStringFlagsSign  paramSetString2       = (BoolStringFlagsSign)&Parameter::setString;
+    BoolBoolSign         paramSetBool1         = (BoolBoolSign)       &Parameter::setBool;
+    BoolIntSign          paramSetInt1          = (BoolIntSign)        &Parameter::setInt;
+    BoolDoubleSign       paramSetDouble1       = (BoolDoubleSign)     &Parameter::setDouble;
+    BoolDoubleSign       paramSetPercentage1   = (BoolDoubleSign)     &Parameter::setPercentage;
+
+    implicitly_convertible<Parameter::Type    ,int>();
+    implicitly_convertible<Parameter::Flags   ,int>();
+    implicitly_convertible<Parameter::Priority,int>();
+
+  //to_python_converter<const Parameter::Type    ,EnumToInt<const Parameter::Type>     >();
+
+    {
+      scope  paramScope
+        ( class_<Parameter>("Parameter", init<const std::string&, Parameter::Type, const std::string&
+                                             ,optional<Parameter::Priority> >())
+                           .def("isFile"            , &Parameter::isFile)
+                           .def("isPath"            , &Parameter::isPath)
+                           .def("hasMin"            , &Parameter::hasMin)
+                           .def("hasMax"            , &Parameter::hasMax)
+                           .def("hasNeedRestart"    , &Parameter::hasNeedRestart)
+                           .def("hasMustExist"      , &Parameter::hasMustExist)
+                         //.def("hasFlags"          , &Parameter::hasFlags)
+                           .def("getId"             , &Parameter::getId, return_value_policy<reference_existing_object>())
+                           .def("getMinInt"         , &Parameter::getMinInt)
+                           .def("getMaxInt"         , &Parameter::getMaxInt)
+                           .def("getMinDouble"      , &Parameter::getMinDouble)
+                           .def("getMaxDouble"      , &Parameter::getMaxDouble)
+                           .def("checkValue"        , paramCheckValueInt)
+                           .def("checkValue"        , paramCheckValueDouble)
+                           .def("asString"          , &Parameter::asString, return_value_policy<reference_existing_object>())
+                           .def("asPercentageString", &Parameter::asPercentageString)
+                           .def("asBool"            , &Parameter::asBool)
+                           .def("asInt"             , &Parameter::asInt)
+                           .def("asPercentage"      , &Parameter::asPercentage)
+                           .def("addValue"          , &Parameter::addValue)
+                           .def("addSlave"          , &Parameter::addSlave)
+                           .def("setPriority"       , &Parameter::setPriority)
+                           .def("setString"         , &Parameter::setString)
+                           .def("setString"         , paramSetString1)
+                           .def("setString"         , paramSetString2)
+                           .def("setBool"           , &Parameter::setBool)
+                           .def("setBool"           , paramSetBool1)
+                           .def("setInt"            , &Parameter::setInt)
+                           .def("setInt"            , paramSetInt1)
+                           .def("setDouble"         , &Parameter::setDouble)
+                           .def("setDouble"         , paramSetDouble1)
+                           .def("setPercentage"     , &Parameter::setPercentage)
+                           .def("setPercentage"     , paramSetPercentage1)
+                           .def("setMin"            , &parameterSetMinInt1)
+                           .def("setMin"            , &parameterSetMinDouble1)
+                           .def("setMax"            , &parameterSetMaxInt1)
+                           .def("setMax"            , &parameterSetMaxDouble1)
+
+                         //.add_property("flags", &Parameter::getFlags, &Parameter::setFlags)
+                           .add_property("type" , &Parameter::getType)
+                         );
+
+      enum_<Parameter::Type>("Type")
+      .value("Unknown"   ,Parameter::Unknown)
+      .value("String"    ,Parameter::String)
+      .value("Bool"      ,Parameter::Bool)
+      .value("Int"       ,Parameter::Int)
+      .value("Enumerate" ,Parameter::Enumerate)
+      .value("Double"    ,Parameter::Double)
+      .value("Percentage",Parameter::Percentage)
+      ;
+      
+      enum_<Parameter::Priority>("Priority")
+        .value("UseDefault"        ,Parameter::UseDefault)
+        .value("ApplicationBuiltin",Parameter::ApplicationBuiltin)
+        .value("ConfigurationFile" ,Parameter::ConfigurationFile)
+        .value("CommandLine"       ,Parameter::CommandLine)
+        .value("Interactive"       ,Parameter::Interactive)
+        ;
+      
+      enum_<Parameter::Flags>("Flags")
+        .value("HasMin"         , Parameter::HasMin)
+        .value("HasMax"         , Parameter::HasMax)
+        .value("IsFile"         , Parameter::IsFile)
+        .value("IsPath"         , Parameter::IsPath)
+        .value("NeedRestart"    , Parameter::NeedRestart)
+        .value("MustExist"      , Parameter::MustExist)
+        .value("TypeCheck"      , Parameter::TypeCheck)
+        .value("FromString"     , Parameter::FromString)
+        .value("AllRequirements", Parameter::AllRequirements)
+      ;
+    }
+
+    typedef  std::map <const std::string,Parameter*>  ParametersMap;
+    typedef  std::pair<const std::string,Parameter*>  ParametersPair;
+
+    class_<ParametersPair>("ParametersPair")
+      .def_readonly ("key"  , &ParametersPair::first )
+      .def_readwrite("value", &ParametersPair::second)
+      ;
+    class_<ParametersMap>("ParametersMap")
+      .def("__len__"      , &ParametersMap::size)
+      .def("clear"        , &ParametersMap::clear)
+      .def("__getitem__"  , &MapWrapper<ParametersMap>::get, return_value_policy<reference_existing_object>())
+      .def("__setitem__"  , &MapWrapper<ParametersMap>::set, return_value_policy<reference_existing_object>())
+      .def("__delitem__"  , &MapWrapper<ParametersMap>::del)
+      .def("__contains__" , &MapWrapper<ParametersMap>::in )
+      .def("has_key"      , &MapWrapper<ParametersMap>::in )
+      .def("keys"         , &MapWrapper<ParametersMap>::keys )
+      .def("values"       , &MapWrapper<ParametersMap>::values )
+      .def("items"        , &MapWrapper<ParametersMap>::items )
+      ;
+
+  // Configuration overloaded function members.
+    Parameter* (Configuration::*CfgGetParameter1) ( const std::string& ) const                  = (Parameter* (Configuration:: *)(const std::string&) const)                &Configuration::getParameter;
+    Parameter* (Configuration::*CfgGetParameter2) ( const std::string&, Parameter::Type ) const = (Parameter* (Configuration:: *)(const std::string&,Parameter::Type) const)&Configuration::getParameter;
+
+    {
+      scope  confScope
+        ( class_<Configuration>("Configuration", no_init)
+        .def("get"                , &Configuration::get                , return_value_policy<reference_existing_object>())
+        .def("getParameter"       , CfgGetParameter1                   , return_value_policy<reference_existing_object>())
+        .def("getParameter"       , CfgGetParameter2                   , return_value_policy<reference_existing_object>())
+        .def("pushDefaultPriority", &Configuration::pushDefaultPriority)
+        .def("popDefaultPriority" , &Configuration::popDefaultPriority )
+        .def("getDefaultPriority" , &Configuration::getDefaultPriority )
+        .def("getParameters"      , &Configuration::getParameters      , return_value_policy<reference_existing_object>())
+        .staticmethod("get")
+        .staticmethod("pushDefaultPriority")
+        .staticmethod("popDefaultPriority")
+        .staticmethod("getDefaultPriority")
+        .add_property("flags", &Configuration::getFlags, &Configuration::setFlags)
+        );
+
+      implicitly_convertible<Configuration::Flags,int>();
+
+      enum_<Configuration::Flags>("Flags")
+        .value("DriveValues",Configuration::DriveValues)
+        .value("DriveLayout",Configuration::DriveLayout)
+        ;
+    }
+
+
+  // Configuration overloaded functions.
+    typedef  Parameter* (*ParamStringSign      )(const std::string&);
+    typedef  Parameter* (*ParamStringBoolSign  )(const std::string&, bool);
+    typedef  Parameter* (*ParamStringIntSign   )(const std::string&, int);
+    typedef  Parameter* (*ParamStringDoubleSign)(const std::string&, double);
+    typedef  Parameter* (*ParamStringStringSign)(const std::string&, const std::string&);
+
+    ParamStringSign        getParamString1     = (ParamStringSign      )getParamString;
+    ParamStringStringSign  getParamString2     = (ParamStringStringSign)getParamString;
+    ParamStringSign        getParamBool1       = (ParamStringSign      )getParamBool;
+    ParamStringBoolSign    getParamBool2       = (ParamStringBoolSign  )getParamBool;
+    ParamStringSign        getParamInt1        = (ParamStringSign      )getParamInt;
+    ParamStringIntSign     getParamInt2        = (ParamStringIntSign   )getParamInt;
+    ParamStringSign        getParamEnumerate1  = (ParamStringSign      )getParamEnumerate;
+    ParamStringIntSign     getParamEnumerate2  = (ParamStringIntSign   )getParamEnumerate;
+    ParamStringSign        getParamDouble1     = (ParamStringSign      )getParamDouble;
+    ParamStringDoubleSign  getParamDouble2     = (ParamStringDoubleSign)getParamDouble;
+    ParamStringSign        getParamPercentage1 = (ParamStringSign      )getParamPercentage;
+    ParamStringDoubleSign  getParamPercentage2 = (ParamStringDoubleSign)getParamPercentage;
+
+    def("getParamString"    , getParamString1    , return_value_policy<reference_existing_object>());
+    def("getParamString"    , getParamString2    , return_value_policy<reference_existing_object>());
+    def("getParamBool"      , getParamBool1      , return_value_policy<reference_existing_object>());
+    def("getParamBool"      , getParamBool2      , return_value_policy<reference_existing_object>());
+    def("getParamInt"       , getParamInt1       , return_value_policy<reference_existing_object>());
+    def("getParamInt"       , getParamInt2       , return_value_policy<reference_existing_object>());
+    def("getParamEnumerate" , getParamEnumerate1 , return_value_policy<reference_existing_object>());
+    def("getParamEnumerate" , getParamEnumerate2 , return_value_policy<reference_existing_object>());
+    def("getParamDouble"    , getParamDouble1    , return_value_policy<reference_existing_object>());
+    def("getParamDouble"    , getParamDouble2    , return_value_policy<reference_existing_object>());
+    def("getParamPercentage", getParamPercentage1, return_value_policy<reference_existing_object>());
+    def("getParamPercentage", getParamPercentage2, return_value_policy<reference_existing_object>());
+
+  } // End of Configuration BOOST_PYTHON_MODULE.
+
+
+
+} // End of Cfg namespace.
diff --git a/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h
index f122b302..226ff820 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h
@@ -2,24 +2,20 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2008-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2008-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
 // x-----------------------------------------------------------------x
-// |                                                                 |
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
 // |  Author      :                    Jean-Paul CHAPUT              |
-// |  E-mail      :       Jean-Paul.Chaput@asim.lip6.fr              |
+// |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
 // |  C++ Header  :       "./Configuration.h"                        |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
 // x-----------------------------------------------------------------x
 
 
@@ -58,6 +54,10 @@ namespace Cfg {
 
     public:
       static Configuration*            get                 ();
+      static Parameter::Priority       pushDefaultPriority ( Parameter::Priority );
+      static Parameter::Priority       popDefaultPriority  ();
+      static Parameter::Priority       getDefaultPriority  ();
+      static void                      _tokenize           ( std::set<std::string>& tokens, const std::string& line );
     public:
     // Methods.
              ConfigurationWidget*      buildWidget         ( unsigned int flags );
@@ -68,12 +68,12 @@ namespace Cfg {
       inline unsigned int              getFlags            () const;
       inline const LayoutDescription&  getLayout           () const;
       inline LayoutDescription&        getLayout           ();
-             Parameter*                getParameter        ( const std::string& id
-                                                           , Parameter::Type    type=Parameter::Unknown ) const;
-             Parameter*                addParameter        ( const std::string& id
-                                                           , Parameter::Type    type
-                                                           , const std::string& value
-                                                           , int                priority=0 );
+             Parameter*                getParameter        ( const std::string&  id
+                                                           , Parameter::Type     type=Parameter::Unknown ) const;
+             Parameter*                addParameter        ( const std::string&  id
+                                                           , Parameter::Type     type
+                                                           , const std::string&  value
+                                                           , Parameter::Priority priority=Parameter::UseDefault );
       inline void                      setFlags            ( unsigned int mask );
       inline bool                      hasLogs             ( unsigned int mask ) const;
              void                      addLog              ( unsigned int mask, const std::string& id );
diff --git a/vlsisapd/src/configuration/src/vlsisapd/configuration/LayoutDescription.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/LayoutDescription.h
index 9f616e24..08448f30 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/LayoutDescription.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/LayoutDescription.h
@@ -2,14 +2,13 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2010-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2010-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
-// x-----------------------------------------------------------------x
-// |                                                                 |
+// +-----------------------------------------------------------------+
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
@@ -17,10 +16,7 @@
 // |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
 // |  C++ Header  :       "./LayoutDescription.h"                    |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
-// x-----------------------------------------------------------------x
+// +-----------------------------------------------------------------+
 
 
 
@@ -122,25 +118,30 @@ namespace Cfg {
 
   class TabDescription {
     public:
-      inline                                        TabDescription ( LayoutDescription*, const std::string& name );
+      inline                                        TabDescription ( LayoutDescription*, const std::string& name, const std::string& id );
              void                                   addWidget      ( WidgetDescription* );
       inline const std::string&                     getName        () const;
+      inline const std::string&                     getId          () const;
       inline const std::vector<WidgetDescription*>& getWidgets     () const;
     private:
       LayoutDescription*              _layout;
       std::string                     _name;
+      std::string                     _id;
       std::vector<WidgetDescription*> _widgets;
   };
 
 
 // Inline Methods.
-  inline TabDescription::TabDescription ( LayoutDescription* layout, const std::string& name )
-    : _layout(layout), _name(name), _widgets()
+  inline TabDescription::TabDescription ( LayoutDescription* layout, const std::string& name, const std::string& id )
+    : _layout(layout), _name(name), _id(id), _widgets()
   { }
 
   inline const std::string& TabDescription::getName () const
   { return _name; }
 
+  inline const std::string& TabDescription::getId () const
+  { return _id; }
+
   inline const std::vector<WidgetDescription*>& TabDescription::getWidgets () const
   { return _widgets; }
 
@@ -155,9 +156,9 @@ namespace Cfg {
              WidgetDescription*                  getWidget         ( const std::string& id );
              void                                addWidgetLookup   ( WidgetDescription* );
       inline void                                addTab            ( TabDescription* );
-      inline void                                addTab            ( const std::string& tabName );
+      inline void                                addTab            ( const std::string& tabName, const std::string& id );
       inline TabDescription*                     getBackTab        ();
-             TabDescription*                     getTab            ( const std::string& tabName );
+             TabDescription*                     getTab            ( const std::string& tabName, const std::string& id="no_id" );
       inline const std::vector<TabDescription*>& getTabs           () const;
              void                                addRule           ( const std::string& tabName );
              void                                addTitle          ( const std::string& tabName
@@ -172,7 +173,7 @@ namespace Cfg {
                                                                    , int                span  =1
                                                                    , unsigned int       flags =0 );
              ConfigurationWidget*                buildWidget       ( unsigned int       flags );
-             void                                writeToStream     ( std::ostream& ) const;
+             void                                writeToStream     ( std::ostream&, const std::string& ) const;
     private:
       Configuration*                                 _configuration;
       std::vector<TabDescription*>                   _tabs;
@@ -188,8 +189,8 @@ namespace Cfg {
   inline void  LayoutDescription::addTab ( TabDescription* tab )
   { _tabs.push_back(tab); }
 
-  inline void  LayoutDescription::addTab ( const std::string& tabName )
-  { addTab ( new TabDescription(this,tabName) ); }
+  inline void  LayoutDescription::addTab ( const std::string& tabName, const std::string& id )
+  { addTab ( new TabDescription(this,tabName,id) ); }
 
   inline TabDescription* LayoutDescription::getBackTab ()
   { return _tabs.back(); }
diff --git a/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h
index 68aefd1b..7065a684 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h
@@ -2,25 +2,21 @@
 // -*- C++ -*-
 //
 // This file is part of the VSLSI Stand-Alone Software.
-// Copyright (c) UPMC/LIP6 2008-2010, All Rights Reserved
+// Copyright (c) UPMC/LIP6 2008-2011, All Rights Reserved
 //
 // ===================================================================
 //
 // $Id$
 //
-// x-----------------------------------------------------------------x
-// |                                                                 |
+// +-----------------------------------------------------------------+
 // |                   C O R I O L I S                               |
 // |    C o n f i g u r a t i o n   D a t a - B a s e                |
 // |                                                                 |
 // |  Author      :                    Jean-Paul CHAPUT              |
-// |  E-mail      :       Jean-Paul.Chaput@asim.lip6.fr              |
+// |  E-mail      :            Jean-Paul.Chaput@lip6.fr              |
 // | =============================================================== |
-// |  C++ Header  :       "./Parameter.h"                            |
-// | *************************************************************** |
-// |  U p d a t e s                                                  |
-// |                                                                 |
-// x-----------------------------------------------------------------x
+// |  C++ Header  :  "./vlsisapd/configuration/Parameter.h"          |
+// +-----------------------------------------------------------------+
 
 
 #ifndef  __CFG_CONFIGURATION_PARAMETER__
@@ -56,7 +52,8 @@ namespace Cfg {
                     , FromString      = 0x80
                     , AllRequirements = HasMin|HasMax|IsFile|IsPath|NeedRestart|MustExist|TypeCheck
                     };
-      enum Priority { ApplicationBuiltin = 1
+      enum Priority { UseDefault         = 0
+                    , ApplicationBuiltin = 1
                     , ConfigurationFile  = 2
                     , CommandLine        = 3
                     , Interactive        = 4
@@ -71,61 +68,66 @@ namespace Cfg {
           int          _value;
       };
     public:
-      static std::string        typeToString       ( Type );
+      static std::string        typeToString        ( Type );
+      static Priority           pushDefaultPriority ( Priority );
+      static Priority           popDefaultPriority  ();
+      static Priority           getDefaultPriority  ();
     public:                                        
-                                Parameter          ( const std::string& id
-                                                   , Type               type
-                                                   , const std::string& value
-                                                   , int                priority=0 );
-      inline bool               isFile             () const;
-      inline bool               isPath             () const;
-      inline bool               hasMin             () const;
-      inline bool               hasMax             () const;
-      inline bool               hasNeedRestart     () const;
-      inline bool               hasMustExist       () const;
-      inline bool               hasFlags           ( int mask ) const;
-      inline const std::string& getId              () const;
-      inline const Type         getType            () const;
-      inline const std::vector<EnumValue>&         
-                                getValues          () const;
-      inline const std::vector<std::string>&       
-                                getSlaves          () const;
-      inline int                getFlags           () const;
-      inline int                getMinInt          () const;
-      inline int                getMaxInt          () const;
-      inline double             getMinDouble       () const;
-      inline double             getMaxDouble       () const;
-      inline bool               checkValue         ( int ) const;
-      inline bool               checkValue         ( double ) const;
-      inline const std::string& asString           () const;
-             std::string        asPercentageString () const;
-             bool               asBool             () const;
-             int                asInt              () const;
-             double             asDouble           () const;
-             double             asPercentage       () const;
-      inline void               addValue           ( const std::string&, int );
-      inline void               addSlave           ( const std::string& );
-      inline void               setPriority        ( int );
-      inline void               setFlags           ( int mask );
-      inline void               unsetFlags         ( int mask );
-             bool               setString          ( const std::string&
-                                                   , unsigned int flags=AllRequirements
-                                                   , int priority=ApplicationBuiltin
-                                                   );
-             bool               setBool            ( bool  , int priority=ApplicationBuiltin );
-             bool               setInt             ( int   , int priority=ApplicationBuiltin );
-             bool               setDouble          ( double, int priority=ApplicationBuiltin );
-             bool               setPercentage      ( double, int priority=ApplicationBuiltin );
-      inline void               setMin             ( int   , int priority=ApplicationBuiltin );
-      inline void               setMax             ( int   , int priority=ApplicationBuiltin );
-      inline void               setMin             ( double, int priority=ApplicationBuiltin );
-      inline void               setMax             ( double, int priority=ApplicationBuiltin );
-      inline void               registerCb         ( ParameterChangedCb_t );
-    private:                                       
-      inline void               _onValueChanged    ();
-             bool               _doChange          ( unsigned int flags, const std::string&, bool, int, double );
+                                Parameter           ( const std::string& id
+                                                    , Type               type
+                                                    , const std::string& value
+                                                    , Priority           priority=UseDefault );
+      inline bool               isFile              () const;
+      inline bool               isPath              () const;
+      inline bool               hasMin              () const;
+      inline bool               hasMax              () const;
+      inline bool               hasNeedRestart      () const;
+      inline bool               hasMustExist        () const;
+      inline bool               hasFlags            ( int mask ) const;
+      inline const std::string& getId               () const;
+      inline const Type         getType             () const;
+      inline const std::vector<EnumValue>&          
+                                getValues           () const;
+      inline const std::vector<std::string>&        
+                                getSlaves           () const;
+      inline int                getFlags            () const;
+      inline int                getMinInt           () const;
+      inline int                getMaxInt           () const;
+      inline double             getMinDouble        () const;
+      inline double             getMaxDouble        () const;
+      inline bool               checkValue          ( int ) const;
+      inline bool               checkValue          ( double ) const;
+      inline const std::string& asString            () const;
+             std::string        asPercentageString  () const;
+             bool               asBool              () const;
+             int                asInt               () const;
+             double             asDouble            () const;
+             double             asPercentage        () const;
+      inline void               addValue            ( const std::string&, int );
+      inline void               addSlave            ( const std::string& );
+      inline void               setPriority         ( Priority );
+      inline void               setFlags            ( int mask );
+      inline void               unsetFlags          ( int mask );
+             bool               setString           ( const std::string&
+                                                    , unsigned int flags   =AllRequirements
+                                                    , Priority     priority=UseDefault
+                                                    );
+             bool               setBool             ( bool  , Priority priority=UseDefault );
+             bool               setInt              ( int   , Priority priority=UseDefault );
+             bool               setDouble           ( double, Priority priority=UseDefault );
+             bool               setPercentage       ( double, Priority priority=UseDefault );
+             void               setMin              ( int   , Priority priority=UseDefault );
+             void               setMax              ( int   , Priority priority=UseDefault );
+             void               setMin              ( double, Priority priority=UseDefault );
+             void               setMax              ( double, Priority priority=UseDefault );
+      inline void               registerCb          ( ParameterChangedCb_t );
+    private:                                        
+      inline void               _onValueChanged     ();
+      inline bool               _updatePriority     ( Priority );
+             bool               _doChange           ( unsigned int flags, const std::string&, bool, int, double );
     private:
     // Attributes.
+      static std::vector<Priority>       _defaultPriorities;
       std::string                        _id;
       Type                               _type;
       std::string                        _value;
@@ -159,7 +161,7 @@ namespace Cfg {
   inline const std::string&     Parameter::asString       () const { return _value; }
   inline void                   Parameter::setFlags       ( int mask ) { _flags |= mask; }
   inline void                   Parameter::unsetFlags     ( int mask ) { _flags &= ~mask; }
-  inline void                   Parameter::setPriority    ( int priority ) { _priority = priority; }
+  inline void                   Parameter::setPriority    ( Priority priority ) { _priority = priority; }
 
   inline bool  Parameter::checkValue ( int value ) const {
     bool ok = not (   ( (_flags&HasMin) and (value < _minInt) )
@@ -192,35 +194,20 @@ namespace Cfg {
     _values.push_back ( EnumValue(label,value) );
   }
 
-  inline void  Parameter::setMin ( int min, int priority )
-  { if (priority >= _priority) { _priority=priority; _minInt = min; setFlags(HasMin); } }
-  
-  inline void  Parameter::setMax ( int max, int priority )
-  { if (priority >= _priority) { _priority=priority; _maxInt = max; setFlags(HasMax); } }
-
-  inline void  Parameter::setMin ( double min, int priority )
-  { if (priority >= _priority) {
-      _priority  = priority;
-      _minDouble = min;
-      setFlags ( HasMin );
-      if (_type==Percentage) _minDouble/=100.0;
-    }
-  }
-
-  inline void  Parameter::setMax ( double max, int priority )
-  { if (priority >= _priority) {
-      _priority  = priority;
-      _maxDouble = max;
-      setFlags ( HasMax );
-      if (_type==Percentage) _maxDouble/=100.0;
-    }
-  }
-
   inline Parameter::EnumValue::EnumValue ( const std::string& label, int value )
     : _label(label), _value(value) { }
 
   inline void  Parameter::registerCb ( ParameterChangedCb_t cb ) { _callbacks.push_back(cb); }
 
+
+  inline bool  Parameter::_updatePriority ( Priority priority )
+  {
+    if ( priority == UseDefault ) priority = getDefaultPriority();
+    if ( priority < _priority   ) return false;
+    _priority = priority;
+    return true;
+  }
+
   inline void  Parameter::_onValueChanged ()
   { for ( size_t icb=0 ; icb<_callbacks.size() ; ++icb ) _callbacks[icb]( this ); }