diff --git a/vlsisapd/src/configuration/src/ConfEditorMain.cpp b/vlsisapd/src/configuration/src/ConfEditorMain.cpp
index 9f9b81c7..e5d18249 100644
--- a/vlsisapd/src/configuration/src/ConfEditorMain.cpp
+++ b/vlsisapd/src/configuration/src/ConfEditorMain.cpp
@@ -54,7 +54,7 @@ int main ( int argc, char* argv[] )
     options.add_options()
       ( "help,h"          , "Print this help." )
       ( "disable-gtkstyle", boptions::bool_switch(&disableGtkStyle)->default_value(false)
-                          , "Run the detailed router (Kite).")
+                          , "Do not uses GtkStyle (due to the File/Open native dialog bug).")
       ( "conf,c"          , boptions::value<string>()
                           , "The path of the configuration file." );
 
@@ -93,9 +93,9 @@ int main ( int argc, char* argv[] )
     }
 
     ConfEditorWidget* editor = new ConfEditorWidget ();
-  //editor->getConfigurationWidget()->selectTab ( "Kite" );
     editor->show ();
-  //QFileDialog::getOpenFileName(NULL, "Choose file", "", "");
+  //editor->getConfigurationWidget()->selectTab ( "Kite" );
+  //editor->getConfigurationWidget()->hideTabs ( "Kite;Mauka" );
 
     returnCode = qa->exec ();
   }
diff --git a/vlsisapd/src/configuration/src/ConfTabWidget.cpp b/vlsisapd/src/configuration/src/ConfTabWidget.cpp
index 46b8a71e..0e03ab3f 100644
--- a/vlsisapd/src/configuration/src/ConfTabWidget.cpp
+++ b/vlsisapd/src/configuration/src/ConfTabWidget.cpp
@@ -49,11 +49,12 @@ namespace Cfg {
 // Class  :  "Cfg::ConfTabWidget".
 
 
-  ConfTabWidget::ConfTabWidget ( const string& name, QWidget* parent )
+  ConfTabWidget::ConfTabWidget ( ConfigurationWidget* parent, const string& name )
     : QWidget    (parent)
     , _gridLayout(new QGridLayout())
     , _columns   (2)
     , _rowsCount (new int[_columns])
+    , _confWidget(parent)
     , _parameters()
   {
     for ( int i=0 ; i<_columns ; ++i ) _rowsCount[i] = 0;
@@ -108,10 +109,13 @@ namespace Cfg {
   }
 
 
+  ConfigurationWidget* ConfTabWidget::getConfigurationWidget ()
+  { return _confWidget; }
+
+
   QFont& ConfTabWidget::getParentBoldFont ()
   {
-    ConfigurationWidget* cw = rparent<ConfigurationWidget*> ( this );
-    return cw->getBoldFont();
+    return _confWidget->getBoldFont();
   }
 
 
@@ -150,8 +154,7 @@ namespace Cfg {
                                                , int                span
                                                , int                flags )
   {
-    ConfigurationWidget* cw = rparent<ConfigurationWidget*> ( this );
-    ParameterWidget*     pw = cw->find(parameter);
+    ParameterWidget* pw = _confWidget->find(parameter);
 
     if ( pw != NULL ) {
       cerr << "[ERROR] Parameter <" << parameter->getId() << "> already added." << endl;
diff --git a/vlsisapd/src/configuration/src/Configuration.cpp b/vlsisapd/src/configuration/src/Configuration.cpp
index e10a9263..c8c16467 100644
--- a/vlsisapd/src/configuration/src/Configuration.cpp
+++ b/vlsisapd/src/configuration/src/Configuration.cpp
@@ -162,6 +162,7 @@ namespace {
       _parameter = _configuration->addParameter ( attrId 
                                                 , type
                                                 , _getAttributeValue("value")
+                                                , Parameter::ConfigurationFile
                                                 );
     } else {
       _parameter->setString ( _getAttributeValue("value")
@@ -427,7 +428,8 @@ namespace Cfg {
 
   Parameter* Configuration::addParameter ( const string&   id
                                          , Parameter::Type type
-                                         , const string&   value )
+                                         , const string&   value
+                                         , int             priority )
   {
     Parameter* p = getParameter ( id );
     if ( p != NULL ) {
@@ -435,7 +437,7 @@ namespace Cfg {
       return p;
     }
 
-    p = new Parameter ( id, type, value );
+    p = new Parameter ( id, type, value, priority );
     _parameters.insert ( make_pair(id,p) );
 
     return p;
diff --git a/vlsisapd/src/configuration/src/ConfigurationWidget.cpp b/vlsisapd/src/configuration/src/ConfigurationWidget.cpp
index 60dd8bfb..9d791a53 100644
--- a/vlsisapd/src/configuration/src/ConfigurationWidget.cpp
+++ b/vlsisapd/src/configuration/src/ConfigurationWidget.cpp
@@ -58,14 +58,15 @@ namespace Cfg {
 
 
   ConfigurationWidget::ConfigurationWidget ( unsigned int flags, QWidget* parent )
-    : QWidget   (parent)
-    , _flags    (flags)
-    , _boldFont (QApplication::font())
-    , _tabWidget(new QTabWidget())
-    , _apply    (new QPushButton())
-    , _save     (NULL)
-    , _cancel   (NULL)
-    , _log      (NULL)
+    : QWidget    (parent)
+    , _flags     (flags)
+    , _boldFont  (QApplication::font())
+    , _tabWidget (new QTabWidget())
+    , _apply     (new QPushButton())
+    , _save      (NULL)
+    , _cancel    (NULL)
+    , _tabWidgets()
+    , _log       (NULL)
   {
     _boldFont.setBold ( true );
 
@@ -111,21 +112,21 @@ namespace Cfg {
 
   void  ConfigurationWidget::addRuler ( const string& tabName )
   {
-    ConfTabWidget* tab = findOrCreate ( tabName );
+    ConfTabWidget* tab = findOrCreateTab ( tabName );
     tab->addRuler ();
   }
 
 
   void  ConfigurationWidget::addTitle (  const string& tabName, const string& title )
   {
-    ConfTabWidget* tab = findOrCreate ( tabName );
+    ConfTabWidget* tab = findOrCreateTab ( tabName );
     tab->addTitle ( title );
   }
 
 
   void  ConfigurationWidget::addSection (  const string& tabName, const string& section, int column )
   {
-    ConfTabWidget* tab = findOrCreate ( tabName );
+    ConfTabWidget* tab = findOrCreateTab ( tabName );
     tab->addSection ( section, column );
   }
 
@@ -143,7 +144,7 @@ namespace Cfg {
       return pw;
     }
 
-    ConfTabWidget* tab = findOrCreate ( tabName );
+    ConfTabWidget* tab = findOrCreateTab ( tabName );
     return tab->addParameter ( parameter, label, column, span, flags );
   }
 
@@ -159,13 +160,16 @@ namespace Cfg {
   { return findChild<ParameterWidget*>(id.c_str()); }
 
 
-  ConfTabWidget* ConfigurationWidget::findOrCreate ( const string& tabName )
+  ConfTabWidget* ConfigurationWidget::findOrCreateTab ( const string& tabName )
   {
-    ConfTabWidget* tab = findChild<ConfTabWidget*>(tabName.c_str());
+  //ConfTabWidget* tab = findChild<ConfTabWidget*>(tabName.c_str());
+    ConfTabWidget* tab = findTab(tabName,AllTabs);
+
     if ( tab != NULL ) return tab;
 
-    tab = new ConfTabWidget ( tabName );
+    tab = new ConfTabWidget ( this, tabName );
     _tabWidget->addTab ( tab, tabName.c_str() );
+    _tabWidgets.push_back ( tab );
 
     connect ( this, SIGNAL(updateParameters()), tab, SIGNAL(updateParameters()) );
     if (_save)
@@ -219,15 +223,79 @@ namespace Cfg {
   }
 
 
-  void  ConfigurationWidget::selectTab ( const std::string& tabName )
+  ConfTabWidget* ConfigurationWidget::findTab ( const std::string& tabName, int mode )
   {
     QString qtabName ( tabName.c_str() );
-    for ( int itab=0 ; itab<_tabWidget->count() ; ++itab ) {
-      if ( _tabWidget->tabText(itab) == qtabName ) {
-        _tabWidget->setCurrentIndex ( itab );
-        return;
+
+    if ( mode & ShownTabs ) {
+      for ( int itab=0 ; itab<_tabWidgets.size() ; ++itab ) {
+        if ( _tabWidgets[itab]->objectName() == qtabName ) return _tabWidgets[itab];
       }
+    } else {
+    // AllTabs.
+      for ( int itab=0 ; itab<_tabWidget->count() ; ++itab ) {
+        if ( _tabWidget->tabText(itab) == qtabName ) {
+          return qobject_cast<ConfTabWidget*>(_tabWidget->widget(itab));
+        }
     }
+    }
+
+    return NULL;
+  }
+
+
+  void  ConfigurationWidget::selectTab ( const std::string& tabName )
+  {
+    ConfTabWidget* tab = findTab ( tabName, ShownTabs );
+    if ( tab ) _tabWidget->setCurrentWidget ( tab );
+  }
+
+
+  void  ConfigurationWidget::showTabs ( const std::string& tabNames, int mode )
+  {
+    _tabWidget->setUpdatesEnabled ( false );
+
+    QString     qtabNames ( tabNames.c_str() );
+    QStringList qtabList  = qtabNames.split ( ";" );
+
+    if ( mode & ExactSet ) _tabWidget->clear ();
+
+    int insertIndex = 0;
+    for ( int itab=0 ; itab<_tabWidgets.size() ; ++itab ) {
+      ConfTabWidget* tab      = _tabWidgets[itab];
+      int            tabIndex = _tabWidget->indexOf ( tab );
+
+      if ( (tabIndex < 0) and qtabList.contains(tab->objectName()) ) {
+        tabIndex = _tabWidget->insertTab ( insertIndex, tab, tab->objectName() );
+      }
+      if ( tabIndex >= 0 ) insertIndex = tabIndex+1;
+    }
+
+    _tabWidget->setUpdatesEnabled ( true );
+  }
+
+
+  void  ConfigurationWidget::hideTabs ( const std::string& tabNames, int mode )
+  {
+    _tabWidget->setUpdatesEnabled ( false );
+
+    QString     qtabNames ( tabNames.c_str() );
+    QStringList qtabList  = qtabNames.split ( ";" );
+
+    if ( mode & ExactSet ) _tabWidget->clear ();
+
+    for ( int itab=0 ; itab<_tabWidgets.size() ; ++itab ) {
+      ConfTabWidget* tab      = _tabWidgets[itab];
+      int            tabIndex = _tabWidget->indexOf ( tab );
+
+      if ( (tabIndex >= 0) and qtabList.contains(tab->objectName()) ) 
+        _tabWidget->removeTab ( tabIndex );
+
+      if ( (mode & ExactSet) and not qtabList.contains(tab->objectName()) ) 
+        _tabWidget->addTab ( tab, tab->objectName() );
+    }
+
+    _tabWidget->setUpdatesEnabled ( true );
   }
   
 
diff --git a/vlsisapd/src/configuration/src/Parameter.cpp b/vlsisapd/src/configuration/src/Parameter.cpp
index 08bdae3d..ecc3800f 100644
--- a/vlsisapd/src/configuration/src/Parameter.cpp
+++ b/vlsisapd/src/configuration/src/Parameter.cpp
@@ -58,15 +58,21 @@ namespace Cfg {
 
   Parameter::Parameter ( const std::string& id
                        , Type               type
-                       , const std::string& value )
+                       , const std::string& value
+                       , int                priority
+                       )
     : _id       (id)
     , _type     (type)
     , _value    (value)
+    , _values   ()
+    , _priority (priority)
     , _flags    (0)
     , _minInt   (0)
     , _maxInt   (0)
     , _minDouble(0.0)
     , _maxDouble(0.0)
+    , _slaves   ()
+    , _callbacks()
   {
     if ( type == Percentage ) {
       setPercentage ( asDouble() );
@@ -134,8 +140,11 @@ namespace Cfg {
   }
 
 
-  bool  Parameter::setString ( const std::string& s, unsigned int flags )
+  bool  Parameter::setString ( const std::string& s, unsigned int flags, int priority )
   {
+    if ( priority < _priority ) return false;
+    _priority = priority;
+
     if ( (flags & TypeCheck) and (_type != String) )
       cerr << "[ERROR] Parameter::setString(): Setting " << Parameter::typeToString(_type)
            << " parameter <" << _id
@@ -145,8 +154,11 @@ namespace Cfg {
   }
 
 
-  bool  Parameter::setBool ( bool b )
+  bool  Parameter::setBool ( bool b, int priority )
   {
+    if ( priority < _priority ) return false;
+    _priority = priority;
+
     if ( _type != Bool )
       cerr << "[ERROR] Parameter::setBool(): Setting " << Parameter::typeToString(_type)
            << " parameter <" << _id
@@ -156,8 +168,11 @@ namespace Cfg {
   }
 
 
-  bool  Parameter::setInt ( int i )
+  bool  Parameter::setInt ( int i, int priority )
   {
+    if ( priority < _priority ) return false;
+    _priority = priority;
+
     if ( (_type != Int) and (_type != Enumerate)  )
       cerr << "[ERROR] Parameter::setInt(): Setting " << Parameter::typeToString(_type)
            << " parameter <" << _id
@@ -167,8 +182,11 @@ namespace Cfg {
   } 
 
 
-  bool  Parameter::setDouble ( double d )
+  bool  Parameter::setDouble ( double d, int priority )
   {
+    if ( priority < _priority ) return false;
+    _priority = priority;
+
     if ( (_type != Double) and (_type != Percentage)  )
       cerr << "[ERROR] Parameter::setDouble(): Setting " << Parameter::typeToString(_type)
            << " parameter <" << _id
@@ -178,7 +196,7 @@ namespace Cfg {
   } 
 
 
-  bool  Parameter::setPercentage ( double d )
+  bool  Parameter::setPercentage ( double d, int priority )
   {
     if ( (_type != Double) and (_type != Percentage)  )
       cerr << "[ERROR] Parameter::setPercentage(): Setting " << Parameter::typeToString(_type)
diff --git a/vlsisapd/src/configuration/src/ParameterWidget.cpp b/vlsisapd/src/configuration/src/ParameterWidget.cpp
index af670fdc..44b5f66c 100644
--- a/vlsisapd/src/configuration/src/ParameterWidget.cpp
+++ b/vlsisapd/src/configuration/src/ParameterWidget.cpp
@@ -34,6 +34,7 @@
 #include  "vlsisapd/configuration/Parameter.h"
 #include  "vlsisapd/configuration/FilePathEdit.h"
 #include  "vlsisapd/configuration/ParameterWidget.h"
+#include  "vlsisapd/configuration/ConfTabWidget.h"
 #include  "vlsisapd/configuration/ConfigurationWidget.h"
 
 
@@ -47,12 +48,13 @@ namespace Cfg {
   using std::ostringstream;
 
 
-  ParameterWidget::ParameterWidget ( QObject* parent, Parameter* parameter, const std::string& label, int flags )
-    : QObject     (parent)
-    , _parameter  (parameter)
-    , _labelWidget(new QLabel())
-    , _valueWidget(NULL)
-    , _flags      (flags)
+  ParameterWidget::ParameterWidget ( ConfTabWidget* parent, Parameter* parameter, const std::string& label, int flags )
+    : QObject       (parent)
+    , _confTabWidget(parent)
+    , _parameter    (parameter)
+    , _labelWidget  (new QLabel())
+    , _valueWidget  (NULL)
+    , _flags        (flags)
   {
     setObjectName ( _parameter->getId().c_str() );
 
@@ -182,12 +184,12 @@ namespace Cfg {
     if ( _parameter->getType() == Parameter::String )
       {
         QLineEdit* lineEdit = qobject_cast<QLineEdit*>(_valueWidget);
-        _parameter->setString ( lineEdit->displayText().toStdString() );
+        _parameter->setString ( lineEdit->displayText().toStdString(), Parameter::Interactive );
       }
     else if ( _parameter->getType() == Parameter::Bool )
       {
         QCheckBox* checkBox = qobject_cast<QCheckBox*>(_valueWidget);
-        _parameter->setBool ( checkBox->isChecked() );
+        _parameter->setBool ( checkBox->isChecked(), Parameter::Interactive );
       }
     else if ( _parameter->getType() == Parameter::Int )
       {
@@ -195,14 +197,14 @@ namespace Cfg {
           QSpinBox* spinBox = qobject_cast<QSpinBox*>(_valueWidget);
           int       value   = spinBox->value();
 
-          if ( not _parameter->setInt(value) )
+          if ( not _parameter->setInt(value,Parameter::Interactive) )
             spinBox->setValue ( _parameter->asInt() );
         } else {
           bool       success;
           QLineEdit* lineEdit = qobject_cast<QLineEdit*>(_valueWidget);
           int        value    = lineEdit->displayText().toInt ( &success );
 
-          if ( not success or not _parameter->setInt(value) )
+          if ( not success or not _parameter->setInt(value,Parameter::Interactive) )
             lineEdit->setText ( _parameter->asString().c_str() );
         }
       }
@@ -212,7 +214,7 @@ namespace Cfg {
         QLineEdit* lineEdit = qobject_cast<QLineEdit*>(_valueWidget);
         double     value    = lineEdit->displayText().toFloat ( &success );
 
-        if ( not success or not _parameter->setDouble(value) )
+        if ( not success or not _parameter->setDouble(value,Parameter::Interactive) )
           lineEdit->setText ( _parameter->asString().c_str() );
       }
     else if ( _parameter->getType() == Parameter::Percentage )
@@ -221,7 +223,7 @@ namespace Cfg {
         QLineEdit* lineEdit = qobject_cast<QLineEdit*>(_valueWidget);
         double     value    = lineEdit->displayText().toFloat ( &success );
 
-        if ( not success or not _parameter->setPercentage(value) ) {
+        if ( not success or not _parameter->setPercentage(value,Parameter::Interactive) ) {
           lineEdit->setText ( _parameter->asPercentageString().c_str() );
         }
       }
@@ -230,7 +232,7 @@ namespace Cfg {
         QComboBox* comboBox = qobject_cast<QComboBox*>(_valueWidget);
 
         const vector<Parameter::EnumValue>& values = _parameter->getValues();
-        _parameter->setInt ( values[comboBox->currentIndex()]._value );
+        _parameter->setInt ( values[comboBox->currentIndex()]._value, Parameter::Interactive );
       }
   }
 
@@ -349,17 +351,11 @@ namespace Cfg {
 
   void  ParameterWidget::enableSlaves ( int state )
   {
-    ConfigurationWidget* cw = rparent<ConfigurationWidget*> ( this );
-    if ( cw == NULL ) {
-      cerr << "[ERROR] ParameterWidget::enableSlaves(): Cannot find parent ConfigurationWidget." << endl;
-      return;
-    }
-
     bool enabled = ( state != Qt::Unchecked );
 
     const vector<string>& slaveIds = _parameter->getSlaves();
     for ( size_t islave=0 ; islave<slaveIds.size() ; ++islave ) {
-      ParameterWidget* slave = cw->find(slaveIds[islave]);
+      ParameterWidget* slave = getConfigurationWidget()->find(slaveIds[islave]);
       if ( slave == NULL ) continue;
 
       slave->getLabelWidget()->setEnabled ( enabled );
@@ -368,4 +364,8 @@ namespace Cfg {
   }
 
 
+  ConfigurationWidget* ParameterWidget::getConfigurationWidget ()
+  { return (_confTabWidget) ? _confTabWidget->getConfigurationWidget() : NULL; }
+
+
 }  // End of Cfg namespace.
diff --git a/vlsisapd/src/configuration/src/vlsisapd/configuration/ConfTabWidget.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/ConfTabWidget.h
index 0b9a2217..70285c51 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/ConfTabWidget.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/ConfTabWidget.h
@@ -45,24 +45,26 @@ namespace Cfg {
   class ConfTabWidget : public QWidget {
       Q_OBJECT;
     public:
-                       ConfTabWidget     ( const std::string& name="<noname>", QWidget* parent=NULL );
-      virtual         ~ConfTabWidget     ();
-    public:          
-      QFont&           getParentBoldFont ();
-      void             addRuler          ();
-      void             addTitle          ( const std::string& title );
-      void             addSection        ( const std::string& section, int column=0 );
-      ParameterWidget* addParameter      ( Parameter*, const std::string& label, int column=0, int span=1, int flags=0 );
-    signals:
-      void             updateParameters  ();
-    private:         
-      int              _getMaxRowCount   ();
-      int              _alignMaxRowCount ();
+                           ConfTabWidget          ( ConfigurationWidget* parent, const std::string& name="<noname>" );
+      virtual             ~ConfTabWidget          ();
+    public:
+      ConfigurationWidget* getConfigurationWidget ();
+      QFont&               getParentBoldFont      ();
+      void                 addRuler               ();
+      void                 addTitle               ( const std::string& title );
+      void                 addSection             ( const std::string& section, int column=0 );
+      ParameterWidget*     addParameter           ( Parameter*, const std::string& label, int column=0, int span=1, int flags=0 );
+    signals:                                     
+      void                 updateParameters       ();
+    private:                                     
+      int                  _getMaxRowCount        ();
+      int                  _alignMaxRowCount      ();
     private:
       QGridLayout*                   _gridLayout;
       int                            _columns;
       int                            _span;
       int*                           _rowsCount;
+      ConfigurationWidget*           _confWidget;
       std::vector<ParameterWidget*>  _parameters;
   };
 
diff --git a/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h
index 0829fa3b..f122b302 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/Configuration.h
@@ -72,7 +72,8 @@ namespace Cfg {
                                                            , Parameter::Type    type=Parameter::Unknown ) const;
              Parameter*                addParameter        ( const std::string& id
                                                            , Parameter::Type    type
-                                                           , const std::string& value );
+                                                           , const std::string& value
+                                                           , int                priority=0 );
       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/ConfigurationWidget.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/ConfigurationWidget.h
index 224355e8..fbb218a6 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/ConfigurationWidget.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/ConfigurationWidget.h
@@ -29,6 +29,7 @@
 
 #include  <QFont>
 #include  <QWidget>
+#include  <QVector>
 class QPushButton;
 class QTabWidget;
 
@@ -49,7 +50,13 @@ namespace Cfg {
   class ConfigurationWidget : public QWidget {
       Q_OBJECT;
     public:
-      enum Flags { Embedded=0x1, StandAlone=0x2 };
+      enum Flags { Embedded       = 0x1
+                 , StandAlone     = 0x2
+                 , AllTabs        = 0x1
+                 , ShownTabs      = 0x2
+                 , ExactSet       = 0x4
+                 , IncrementalSet = 0x8
+                 };
     public:
                               ConfigurationWidget ( unsigned int flags, QWidget* parent=NULL );
     public:            
@@ -59,7 +66,8 @@ namespace Cfg {
       inline QPushButton*     getCancelButton     ();
              ParameterWidget* find                ( Parameter* ) const;
              ParameterWidget* find                ( const std::string& id ) const;
-             ConfTabWidget*   findOrCreate        ( const std::string& name );
+             ConfTabWidget*   findTab             ( const std::string& name, int mode );
+             ConfTabWidget*   findOrCreateTab     ( const std::string& name );
              void             addRuler            ( const std::string& tabName );
              void             addTitle            ( const std::string& tabName
                                                   , const std::string& title );
@@ -74,6 +82,8 @@ namespace Cfg {
                                                   , int                flags =0 );
              void             syncSlaves          ();
              void             selectTab           ( const std::string& );
+             void             showTabs            ( const std::string&, int mode=IncrementalSet );
+             void             hideTabs            ( const std::string&, int mode=IncrementalSet );
     public slots:
              void             applyClicked        ();
     signals:
@@ -81,13 +91,14 @@ namespace Cfg {
              void             confOk              ();
              void             needRestart         ();
     private:
-      unsigned int  _flags;
-      QFont         _boldFont;
-      QTabWidget*   _tabWidget;
-      QPushButton*  _apply;
-      QPushButton*  _save;
-      QPushButton*  _cancel;
-      LogWidget*    _log;
+      unsigned int             _flags;
+      QFont                    _boldFont;
+      QTabWidget*              _tabWidget;
+      QPushButton*             _apply;
+      QPushButton*             _save;
+      QPushButton*             _cancel;
+      QVector<ConfTabWidget*>  _tabWidgets;
+      LogWidget*               _log;
   };
 
 
diff --git a/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h
index e842acb0..68aefd1b 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/Parameter.h
@@ -38,24 +38,29 @@ namespace Cfg {
 
   class Parameter {
     public:
-      enum Type  { Unknown         = 0
-                 , String          = 1
-                 , Bool            = 2
-                 , Int             = 3
-                 , Enumerate       = 4
-                 , Double          = 5
-                 , Percentage      = 6
-                 };           
-      enum Flags { HasMin          = 0x01
-                 , HasMax          = 0x02
-                 , IsFile          = 0x04
-                 , IsPath          = 0x08
-                 , NeedRestart     = 0x10
-                 , MustExist       = 0x20
-                 , TypeCheck       = 0x40
-                 , FromString      = 0x80
-                 , AllRequirements = HasMin|HasMax|IsFile|IsPath|NeedRestart|MustExist|TypeCheck
-                 };
+      enum Type     { Unknown         = 0
+                    , String          = 1
+                    , Bool            = 2
+                    , Int             = 3
+                    , Enumerate       = 4
+                    , Double          = 5
+                    , Percentage      = 6
+                    };           
+      enum Flags    { HasMin          = 0x01
+                    , HasMax          = 0x02
+                    , IsFile          = 0x04
+                    , IsPath          = 0x08
+                    , NeedRestart     = 0x10
+                    , MustExist       = 0x20
+                    , TypeCheck       = 0x40
+                    , FromString      = 0x80
+                    , AllRequirements = HasMin|HasMax|IsFile|IsPath|NeedRestart|MustExist|TypeCheck
+                    };
+      enum Priority { ApplicationBuiltin = 1
+                    , ConfigurationFile  = 2
+                    , CommandLine        = 3
+                    , Interactive        = 4
+                    };
       typedef boost::function< void(Parameter*) >  ParameterChangedCb_t;
     public:
       class EnumValue {
@@ -70,7 +75,8 @@ namespace Cfg {
     public:                                        
                                 Parameter          ( const std::string& id
                                                    , Type               type
-                                                   , const std::string& value );
+                                                   , const std::string& value
+                                                   , int                priority=0 );
       inline bool               isFile             () const;
       inline bool               isPath             () const;
       inline bool               hasMin             () const;
@@ -99,17 +105,21 @@ namespace Cfg {
              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 );
-             bool               setBool            ( bool );
-             bool               setInt             ( int );
-             bool               setDouble          ( double );
-             bool               setPercentage      ( double );
-      inline void               setMin             ( int );
-      inline void               setMax             ( int );
-      inline void               setMin             ( double );
-      inline void               setMax             ( double );
+             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    ();
@@ -120,6 +130,7 @@ namespace Cfg {
       Type                               _type;
       std::string                        _value;
       std::vector<EnumValue>             _values;
+      int                                _priority;
       int                                _flags;
       int                                _minInt;
       int                                _maxInt;
@@ -146,6 +157,9 @@ namespace Cfg {
   inline double                 Parameter::getMinDouble   () const { return _minDouble; }
   inline double                 Parameter::getMaxDouble   () const { return _maxDouble; }
   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 bool  Parameter::checkValue ( int value ) const {
     bool ok = not (   ( (_flags&HasMin) and (value < _minInt) )
@@ -178,16 +192,29 @@ namespace Cfg {
     _values.push_back ( EnumValue(label,value) );
   }
 
-  inline void  Parameter::setFlags      ( int mask )   { _flags |= mask; }
-  inline void  Parameter::unsetFlags    ( int mask )   { _flags &= ~mask; }
-  inline void  Parameter::setMin        ( int min )    { _minInt = min; setFlags(HasMin); }
-  inline void  Parameter::setMax        ( int max )    { _maxInt = max; setFlags(HasMax); }
+  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 )
-  { _minDouble = min; setFlags(HasMin); if (_type==Percentage) _minDouble/=100.0; }
+  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 )
-  { _maxDouble = max; setFlags(HasMax); if (_type==Percentage) _maxDouble/=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) { }
diff --git a/vlsisapd/src/configuration/src/vlsisapd/configuration/ParameterWidget.h b/vlsisapd/src/configuration/src/vlsisapd/configuration/ParameterWidget.h
index aefdc30a..3fd47269 100644
--- a/vlsisapd/src/configuration/src/vlsisapd/configuration/ParameterWidget.h
+++ b/vlsisapd/src/configuration/src/vlsisapd/configuration/ParameterWidget.h
@@ -35,6 +35,8 @@ class QLabel;
 namespace Cfg {
 
   class Parameter;
+  class ConfTabWidget;
+  class ConfigurationWidget;
 
 
 // -------------------------------------------------------------------
@@ -46,34 +48,38 @@ namespace Cfg {
     public:
       enum Flags { UseSpinBox=0x1, IsFileName=0x2, IsPathName=0x4 };
     public:
-                        ParameterWidget ( QObject* parent, Parameter*, const std::string& label, int flags );
-      inline Parameter* getParameter    ();
-      inline QLabel*    getLabelWidget  ();
-      inline QWidget*   getValueWidget  ();
-      inline int        getFlags        () const;
-      inline bool       hasFlags        ( int mask ) const;
-      inline void       setFlags        ( int mask );
-      inline void       unsetFlags      ( int mask );
-             void       onUpdateValueCb ( Parameter* );
-    public slots:
-             void       updateValue     ();
-             void       enableSlaves    ( int );
+                                  ParameterWidget        ( ConfTabWidget* parent, Parameter*, const std::string& label, int flags );
+      inline Parameter*           getParameter           ();
+      inline QLabel*              getLabelWidget         ();
+      inline QWidget*             getValueWidget         ();
+      inline ConfTabWidget*       getConfTabWidget       ();
+             ConfigurationWidget* getConfigurationWidget ();
+      inline int                  getFlags               () const;
+      inline bool                 hasFlags               ( int mask ) const;
+      inline void                 setFlags               ( int mask );
+      inline void                 unsetFlags             ( int mask );
+             void                 onUpdateValueCb        ( Parameter* );
+    public slots:                                        
+             void                 updateValue            ();
+             void                 enableSlaves           ( int );
     public:
-      Parameter* _parameter;
-      QLabel*    _labelWidget;
-      QWidget*   _valueWidget;
-      int        _flags;
+      ConfTabWidget* _confTabWidget;
+      Parameter*     _parameter;
+      QLabel*        _labelWidget;
+      QWidget*       _valueWidget;
+      int            _flags;
   };
 
 
 // Inline Methods.
-  inline Parameter* ParameterWidget::getParameter   () { return _parameter; }
-  inline QLabel*    ParameterWidget::getLabelWidget () { return _labelWidget; }
-  inline QWidget*   ParameterWidget::getValueWidget () { return _valueWidget; }
-  inline int        ParameterWidget::getFlags       () const { return _flags; }
-  inline bool       ParameterWidget::hasFlags       ( int mask ) const { return (_flags & mask); }
-  inline void       ParameterWidget::setFlags       ( int mask )   { _flags |= mask; }
-  inline void       ParameterWidget::unsetFlags     ( int mask )   { _flags &= ~mask; }
+  inline Parameter*     ParameterWidget::getParameter     () { return _parameter; }
+  inline QLabel*        ParameterWidget::getLabelWidget   () { return _labelWidget; }
+  inline QWidget*       ParameterWidget::getValueWidget   () { return _valueWidget; }
+  inline ConfTabWidget* ParameterWidget::getConfTabWidget () { return _confTabWidget; }
+  inline int            ParameterWidget::getFlags         () const { return _flags; }
+  inline bool           ParameterWidget::hasFlags         ( int mask ) const { return (_flags & mask); }
+  inline void           ParameterWidget::setFlags         ( int mask )   { _flags |= mask; }
+  inline void           ParameterWidget::unsetFlags       ( int mask )   { _flags &= ~mask; }
 
 
 }   // End of Cfg namespace.