diff --git a/src/interface/Interface_graphic.cpp b/src/interface/Interface_graphic.cpp
index d53e0609156aa775748214c303e8fe4ecf6a9e48..5fea8abfa370157a2febe6d7bf1a7840afee984a 100644
--- a/src/interface/Interface_graphic.cpp
+++ b/src/interface/Interface_graphic.cpp
@@ -124,24 +124,8 @@ Interface_graphic::Interface_graphic(Core* core, QWidget *parent):QMainWindow(pa
     _ui_settings = NULL;
     _ui_node_selection=NULL;
     _ui_interval_selection=NULL;
-    //    _cmd_window = NULL;
     _cmd_window = new Command_window(this,this);
 
-    /*if (!_ui_node_selection) {
-        _ui_node_selection = new Node_select(this, 0);
-
-        //connect( _ui_node_selection, SIGNAL(settings_changed()), this, SLOT(update_settings()));
-        // To close the window when we quit the application
-        connect(quit, SIGNAL(triggered()),  _ui_node_selection, SLOT(close()));
-    }
-
-    if (!_ui_interval_selection) {
-        _ui_interval_selection = new Interval_select(this, 0);
-
-        //connect( _ui_node_selection, SIGNAL(settings_changed()), this, SLOT(update_settings()));
-        // To close the window when we quit the application
-        connect(quit, SIGNAL(triggered()),  _ui_interval_selection, SLOT(close()));
-     }*/
     // For drag and drop operations
     setAcceptDrops(true);
 }
@@ -221,14 +205,6 @@ void Interface_graphic::load_windows(){
         exit(EXIT_FAILURE);
     }
 
-    /* Load the export combo box choice from a .ui file */
-    /*    file_kind_of_export.open(QFile::ReadOnly);
-     CKFP(_ui_kind_of_export_choice = loader->load(&file_kind_of_export, this), "Cannot open the .ui file : " << ":/window/kind_of_export.ui");
-     CKFP(_ui_svg_export_button = this->findChild(QRadioButton*), _ui_kind_of_export_choice, "svg_export"), "Cannot find the svg export button in the .ui file");
-     CKFP(_ui_png_export_button = this->findChild(QRadioButton*), _ui_kind_of_export_choice, "png_export"), "Cannot find the png export button in the .ui file");
-     CKFP(_ui_counter_export_button = this->findChild(QRadioButton*), _ui_kind_of_export_choice, "counter_export"), "Cannot find the svg export button in the .ui file");
-     file_kind_of_export.close();*/
-
     /* Set some windows properties */
     _ui_info_window->setWindowFlags(_ui_info_window->windowFlags() | Qt::WindowStaysOnTopHint);/* Always display info_window on top */
     _ui_time_selection_export->setWindowFlags(_ui_time_selection_export->windowFlags() | Qt::WindowStaysOnTopHint);
@@ -248,10 +224,6 @@ void Interface_graphic::load_windows(){
 
     CKFP(_ui_recent_files_menu = this->findChild<QMenu*>("menuRecent_Files"), "Cannot find the button \"menuRecent_Files\" in the .ui file");
 
-    //  CKFP(Info::Render::_ui_render_min_value = this->findChild<QLabel*>("render_min_value"), "Cannot find the render_min_value label in the .ui file");
-    // CKFP(Info::Render::_ui_render_max_value = this->findChild<QLabel*>("render_max_value"), "Cannot find the render_max_value label in the .ui file");
-
-
     /* Help window */
     CKFP(_ui_help_ok_button = _ui_help_window->findChild<QPushButton*>("help_ok"), "Cannot find the ok push button in the help dialog .ui file");
 
@@ -259,10 +231,6 @@ void Interface_graphic::load_windows(){
     connect(_ui_counter_choice_to_export, SIGNAL(accepted()),
             this, SLOT(counter_choosed_triggered()));
 
-    /* connect(_ui_kind_of_export_choice, SIGNAL(accepted()),
-     this, SLOT(choice_of_the_export_pressed()));
-     */
-
     connect(_ui_help_ok_button, SIGNAL(clicked()),
             _ui_help_window, SLOT(close()));
 
@@ -273,7 +241,9 @@ void Interface_graphic::load_windows(){
     update_recent_files_menu();
 
     /*
-     Special function of Qt which allows methods declared as slots and which name are 'on_[widget]_[action]()' to be called when the 'widget' triggered the signal corresponding to 'action'.
+     Special function of Qt which allows methods declared as slots and which
+     name are 'on_[widget]_[action]()' to be called when the 'widget' triggered
+     the signal corresponding to 'action'.
      /!\ -> use NULL as argument, else messages will be duplicated!
      */
     QMetaObject::connectSlotsByName(NULL);
@@ -308,7 +278,6 @@ void Interface_graphic::error(const string &s) const{
     _ui_info_window->show();/* show info_window */
 }
 
-
 void Interface_graphic::warning(const string &s) const{
     if ( true==_no_warning ) return;/* do not display warning messages */
 
@@ -319,28 +288,18 @@ void Interface_graphic::warning(const string &s) const{
     _ui_info_window->show();/* show info_window */
 }
 
-
 void Interface_graphic::information(const string &s) const{
     QString buf = s.c_str();
     _ui_info_trace_text->moveCursor(QTextCursor::End);/* Insert the new text on the end */
     _ui_info_trace_text->insertHtml("<font color='green'>"+buf+"</font><br /><br />");
 }
 
-
-
-
-
 /***********************************
- *
- *
  *
  * Selected Trace entity informative function.
  *
- *
- *
  **********************************/
 
-
 void Interface_graphic::selection_information(const string &s) const{
     QString buf = s.c_str();
     _ui_info_selection_text->clear();/* Clear the current text (if exists) */
@@ -350,18 +309,10 @@ void Interface_graphic::selection_information(const string &s) const{
     _ui_info_window->show();/* show info_window */
 }
 
-
-
-
-
 /***********************************
- *
- *
  *
  * Tool functions.
  *
- *
- *
  **********************************/
 
 void Interface_graphic::opening_file(const string &path){
@@ -374,34 +325,22 @@ void Interface_graphic::opening_file(const string &path){
 
     QApplication::setOverrideCursor(Qt::WaitCursor);
 
-    /* if (_core->draw_trace(path)==false){
-     error("Draw trace failed");
-     }*/
-
-    //  _ui_render_area->build();
-
     _is_rendering_trace = true;
 
-    //   _ui_render_area->updateGL();
-
     QApplication::restoreOverrideCursor();
-
 }
 
-
 void Interface_graphic::bind_render_area(QGLWidget* render_area){
     /* Bind the render area to a layout (_ui_render_area_layout) */
     _ui_render_area = render_area;
     _ui_render_area_layout->addWidget(_ui_render_area);
 }
 
-
 void Interface_graphic::set_scroll_bars_length(Element_pos new_x_virtual_length, Element_pos new_y_virtual_length){
     _x_factor_virtual_to_real = _REAL_X_SCROLL_LENGTH / new_x_virtual_length;
     _y_factor_virtual_to_real = _REAL_Y_SCROLL_LENGTH / new_y_virtual_length;
 }
 
-
 void Interface_graphic::linking_scroll_bars(Element_pos x_bar_new_value, Element_pos y_bar_new_value){
     _on_manual_change = true;
     _ui_x_scroll->setValue(virtual_to_real_scroll_unit(x_bar_new_value, 'x'));
@@ -472,15 +411,10 @@ void Interface_graphic::change_zoom_box_value(int new_value){
     if(_ui_interval_selection!=NULL)_ui_interval_selection->update_values();
 }
 
-
 /***********************************
- *
- *
  *
  * Widget slot functions.
  *
- *
- *
  **********************************/
 
 void Interface_graphic::on_open_triggered(){
@@ -498,9 +432,6 @@ void Interface_graphic::on_open_triggered(){
 
 }
 
-
-//void Interface_graphic::choice_of_the_export_pressed() {
-
 void Interface_graphic::on_export_file_triggered(){
 
     QStringList selected_files;
@@ -509,8 +440,6 @@ void Interface_graphic::on_export_file_triggered(){
     QString extension;
     signed int filename_size;/* Must be signed to check if size is negative */
 
-
-
     if(_is_rendering_trace == false)
         return;
 
@@ -761,12 +690,8 @@ void Interface_graphic::on_close_triggered(){
 
     _is_rendering_trace = false;
 
-
-
     information(string("File closed."));
 
-
-
     this->setWindowTitle(QString("ViTE"));
 }
 
@@ -821,7 +746,6 @@ void Interface_graphic::on_shaded_states_triggered(){
     }
 }
 
-
 void Interface_graphic::on_toolbar_menu_triggered(){
     static bool checked = true;/* Suppose that toolbar_menu is initially checked */
 
@@ -846,7 +770,6 @@ void Interface_graphic::on_show_info_triggered(){
         _ui_info_window->hide();
 }
 
-
 void Interface_graphic::on_help_triggered(){
 
     if(_ui_help_window->isVisible()){
@@ -931,16 +854,9 @@ void Interface_graphic::on_node_selection_triggered() {
     }else{
         error("Must load a trace before using node selection on a trace");
     }
-    //connect( _ui_node_selection, SIGNAL(settings_changed()), this, SLOT(update_settings()));
-    // To close the window when we quit the application
-    //connect(quit, SIGNAL(triggered()),  _ui_node_selection, SLOT(close()));
-    //}
 }
 
 void Interface_graphic::on_interval_selection_triggered() {
-
-    //if (!_ui_node_selection) {
-    // _ui_node_selection = new Node_select(this, 0);
     if(!_ui_interval_selection){
         _ui_interval_selection = new Interval_select(this, 0);
         connect(quit, SIGNAL(triggered()),  _ui_interval_selection, SLOT(close()));
@@ -954,10 +870,6 @@ void Interface_graphic::on_interval_selection_triggered() {
     }else{
         error("Must load a trace before using interval selection on a trace");
     }
-    //connect( _ui_node_selection, SIGNAL(settings_changed()), this, SLOT(update_settings()));
-    // To close the window when we quit the application
-    //connect(quit, SIGNAL(triggered()),  _ui_node_selection, SLOT(close()));
-    //}
 }
 
 void Interface_graphic::on_actionCommand_triggered(){
@@ -973,13 +885,11 @@ void Interface_graphic::on_actionCommand_triggered(){
     }
 }
 
-
 void Interface_graphic::on_no_warning_triggered(){
     _no_warning = !_no_warning;
     Session::update_hide_warnings_settings(_no_warning);
 }
 
-
 void Interface_graphic::on_no_arrows_triggered(){
     std::cout << "no_arrows triggered" << std::endl;
     Info::Render::_no_arrows = !Info::Render::_no_arrows;
@@ -996,8 +906,6 @@ void Interface_graphic::on_reload_from_file_triggered(){
     Session::update_reload_type_setting(_reload_type);
 }
 
-
-
 void Interface_graphic::on_zoom_in_triggered(){
     Element_pos t = 1;
 
@@ -1087,12 +995,10 @@ void Interface_graphic::on_y_scroll_valueChanged(int new_value){
     }
 }
 
-
 void Interface_graphic::on_scale_container_state_valueChanged(int new_value){
     _core->launch_action(Core::_STATE_RENDER_AREA_CHANGE_CONTAINER_SCALE, &new_value);
 }
 
-
 void Interface_graphic::closeEvent(QCloseEvent *event){
     //   _ui_help_widget->close();
     /* Now, release render */
@@ -1120,7 +1026,6 @@ const std::string Interface_graphic::get_filename() const{
     return _trace_path;
 }
 
-
 Core * Interface_graphic::get_console(){
     return _core;
 }
@@ -1216,7 +1121,6 @@ void Interface_graphic::end_parsing() {
     setDisabled(false); // Enable the main window
 }
 
-
 void Interface_graphic::open_trace(const QString &filename) {
 
     // We open the trace