diff --git a/src/graphics/graphics.c b/src/graphics/graphics.c
index 49e3d5a..ae7f38a 100644
--- a/src/graphics/graphics.c
+++ b/src/graphics/graphics.c
@@ -316,8 +316,8 @@ void graphics_model_setup (const int stack_id)
         g_print("[GRAPH DEBUG] cur arrow has x = %d\n", arrow.x);
         stack->arrows_nb =
             set_arrow (stack_id, stack->arrows_nb, space_X, space_Y, space_Z,
-                               arrow.load,                   //    load
-                               arrow.site,          //    site
+                               arrow.load, //    load
+                               arrow.site, //    site
                                arrow.x,    //    x
                                arrow.y,    //    y
                                arrow.z);   //    z
diff --git a/src/ui/events.c b/src/ui/events.c
index c77d8cb..7c87b38 100644
--- a/src/ui/events.c
+++ b/src/ui/events.c
@@ -90,9 +90,8 @@ void on_togglerunedit_action(GSimpleAction *action,
 
     ui_toggle_run_edit ();
 
-    /*
-    if      (EDIT_MODE) ui_toggle_run_edit (RUN_MODE);
-    else if (RUN_MODE)  ui_toggle_run_edit (EDIT_MODE); */
+    /*      if      (EDIT_MODE) ui_toggle_run_edit (RUN_MODE);
+            else if (RUN_MODE)  ui_toggle_run_edit (EDIT_MODE); */
 }
 
 void on_togglerunstop_action(GSimpleAction *action,
diff --git a/src/ui/gemgraph.ui b/src/ui/gemgraph.ui
index 63160d2..c13ef28 100644
--- a/src/ui/gemgraph.ui
+++ b/src/ui/gemgraph.ui
@@ -27,16 +27,15 @@
             <property name="tooltip-text" translatable="yes">Run mode</property>
             <property name="action-name">app.togglerunedit</property>
             <!-- property name="color">rgb(255,128,0)</property -->
-            <!-- applications should be compiled with the -Wl,--export-dynamic argument inside their compiler flags -->
-            <!-- and linked against gmodule-export-2.0 -->
+            <!-- applications should be compiled with the -Wl,--export-dynamic argument inside their compiler flags and linked against gmodule-export-2.0 -->
             <!-- A GtkBuilder reads XML descriptions of a user interface and instantiates the described objects. -->
             <!-- https://docs.gtk.org/gtk4/class.Builder.html  -->
             <!-- https://docs.gtk.org/gtk4/css-properties.html  -->
+            <!-- https://docs.gtk.org/gtk4/css-overview.html   pour colorier ... -->
             <!-- https://docs.gtk.org/gtk4/class.Widget.html#building-composite-widgets-from-template-xml -->
             <!-- unlike the <object> tag, the <template> tag does not contain an “id” attribute -->
             <!-- https://developer.gnome.org/documentation/tutorials/widget-templates.html -->
             <!-- https://developer.gnome.org/documentation/tutorials/application.html -->
-            <!-- signal name="clicked" handler="ui_toggle_run_edit"/ -->
            </object>
         </child>
 
@@ -54,10 +53,6 @@
             <property name="icon-name">sidebar-show-symbolic</property>
             <property name="tooltip-text" translatable="yes">Display/hide sidebar</property>
             <property name="action-name">app.togglesidebar</property>
-            <!-- applications should be compiled with the -Wl,--export-dynamic argument inside their compiler flags -->
-            <!-- and linked against gmodule-export-2.0 -->
-            <!-- https://docs.gtk.org/gtk4/class.Builder.html -->
-            <!--signal name="clicked" handler="ui_toggle_sidebar" /-->
            </object>
         </child>
       </object>
diff --git a/src/ui/window.c b/src/ui/window.c
index 6788943..2245381 100644
--- a/src/ui/window.c
+++ b/src/ui/window.c
@@ -128,27 +128,27 @@ void ui_set_stack(int mode)
         case EDIT_MODE:
        //     gtk_stack_set_visible_child_full(window->main_stack, "edition", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
             gtk_stack_set_visible_child_full(window->side_stack, "edition", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
-            gtk_menu_button_set_icon_name(window->main_button_mode, "document-edit-symbolic");
+            gtk_menu_button_set_icon_name (window->main_button_mode, "document-edit-symbolic");
             ui_setup_glarea(EDIT_MODE, GTK_WIDGET(window->edition_glarea_box));
             break;
         case RUN_MODE:
             gtk_stack_set_visible_child_full(window->main_stack, "run", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
             gtk_stack_set_visible_child_full(window->side_stack, "run", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
-            gtk_menu_button_set_icon_name(window->main_button_mode, "system-run-symbolic");
+            gtk_menu_button_set_icon_name (window->main_button_mode, "system-run-symbolic");
             ui_setup_glarea(RUN_MODE, GTK_WIDGET(window->run_glarea_box));
             ui_create_tree (GTK_WIDGET (window->run_conditions_tree_box));
             break;
         case PRESENTATION_MODE:
-       //     gtk_stack_set_visible_child_full(window->main_stack, "presentation", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
+            gtk_stack_set_visible_child_full(window->main_stack, "presentation", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
             gtk_stack_set_visible_child_full(window->side_stack, "presentation", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
-            gtk_menu_button_set_icon_name(window->main_button_mode, "x-office-presentation-symbolic");
+            gtk_menu_button_set_icon_name (window->main_button_mode, "x-office-presentation-symbolic");
             ui_setup_glarea(PRESENTATION_MODE, GTK_WIDGET(window->presentation_glarea_box));
             break;
         case HOME_MODE:
             gtk_stack_set_visible_child_full(window->main_stack, "home", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
             gtk_stack_set_visible_child_full(window->side_stack, "home", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
             gtk_paned_set_position(window->main_paned, 0);
-            gtk_menu_button_set_icon_name(window->main_button_mode, "user-home-symbolic");
+            gtk_menu_button_set_icon_name (window->main_button_mode, "user-home-symbolic");
             break;
         default:
             break;
@@ -166,18 +166,22 @@ void ui_toggle_run_edit()
 
     switch(get_run_edit_mode()) {
         case 1:
-       //     gtk_stack_set_visible_child_full(window->main_button_run_edit, "edition", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
-       //     gtk_menu_button_set_icon_name(window->main_button_run_edit, "document-edit-symbolic");
-            set_run_edit_mode (0); //  (EDIT_MODE);
-       //     ui_setup_glarea(EDIT_MODE, GTK_WIDGET(window->edition_glarea_box));
-            break;
+          gtk_stack_set_visible_child_full(window->main_stack, "edition", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
+          gtk_stack_set_visible_child_full(window->side_stack, "edition", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
+          gtk_menu_button_set_icon_name (GTK_MENU_BUTTON (window->main_button_run_edit), "document-edit-symbolic");
+          gtk_paned_set_position(window->main_paned, 300);
+          set_run_edit_mode (0); //  (EDIT_MODE);
+       //   ui_setup_glarea(EDIT_MODE, GTK_WIDGET(window->edition_glarea_box));
+          break;
         case 0:
-        //    gtk_stack_set_visible_child_full(window->main_button_run_edit, "run", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
-        //    gtk_menu_button_set_icon_name(window->main_button_run_edit, "system-run-symbolic");
-        //    ui_setup_glarea(RUN_MODE, GTK_WIDGET(window->run_glarea_box));
-        //    ui_create_tree (GTK_WIDGET (window->run_conditions_tree_box));
-            set_run_edit_mode (1);  //  (RUN_MODE);
-            break;
+          gtk_stack_set_visible_child_full(window->main_stack, "run", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
+          gtk_stack_set_visible_child_full(window->side_stack, "run", GTK_STACK_TRANSITION_TYPE_CROSSFADE);
+          gtk_menu_button_set_icon_name (GTK_MENU_BUTTON (window->main_button_run_edit), "system-run-symbolic");
+          gtk_paned_set_position(window->main_paned, 200);
+          set_run_edit_mode (1); //  (EDIT_MODE);
+          ui_setup_glarea(RUN_MODE, GTK_WIDGET(window->run_glarea_box));
+          ui_create_tree (GTK_WIDGET (window->run_conditions_tree_box));
+          break;
         default:
             break;
     }