diff --git a/src/main.c b/src/main.c
index 8254e07..c5941c4 100644
--- a/src/main.c
+++ b/src/main.c
@@ -32,26 +32,11 @@
 
 int main(int argc, char **argv)
 {
-    GtkWidget *window;
-    GtkWidget *view;
-    gtk_init();
-    // window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
-    // g_signal_connect(window, "delete_event", gtk_main_quit, NULL); /* dirty */
-    g_signal_connect(window, "delete_event", NULL, NULL); /* dirty */
-    // view = create_view_and_model();
-    // gtk_container_add(GTK_CONTAINER(window), view);
-    // gtk_widget_show_all(window);
-    // gtk_main();
-
     tree_c_test();
 
     g_autoptr(GemGraphClientApplication) app = NULL;
     int res;
 
-    // bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
-	  // bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
-	  // textdomain (GETTEXT_PACKAGE);
-
     app = gem_graph_client_application_new("org.alec.gemgraph",
                                            G_APPLICATION_DEFAULT_FLAGS);
 
diff --git a/src/ui/gemgraph.ui b/src/ui/gemgraph.ui
index 551619d..5bab8c7 100644
--- a/src/ui/gemgraph.ui
+++ b/src/ui/gemgraph.ui
@@ -73,6 +73,27 @@
                         </child>
                         <child>
                           <object class="GtkStack" id="runlib_stack">
+                            <child>
+                              <object class="GtkStackPage">
+                                <property name="name">runlib_objects</property>
+                                <property name="title" translatable="yes">Objects</property>
+                                <property name="visible">True</property>
+                                <property name="child">
+                                  <object class="GtkBox" id="runlib_objects">
+                                    <property name="orientation">vertical</property>
+                                    <child>
+                                      <object class="GtkLabel" id="label_runlib_objects">
+                                        <property name="justify">center</property>
+                                        <property name="label" translatable="yes">&lt;b&gt;Here must be a label (then a tree)&lt;/b&gt;</property>
+                                        <property name="use-markup">True</property>
+                                        <property name="margin-top">50</property>
+                                        <property name="margin-bottom">50</property>
+                                      </object>
+                                    </child>
+                                  </object>
+                                </property>
+                              </object>
+                            </child>
                             <child>
                               <object class="GtkStackPage">
                                 <property name="name">runlib_conditions_and_rules</property>
@@ -89,27 +110,6 @@
                                 </property>
                               </object>
                             </child>
-                            <child>
-                              <object class="GtkStackPage">
-                                <property name="name">runlib_objects</property>
-                                <property name="title" translatable="yes">Objects</property>
-                                <property name="visible">True</property>
-                                <property name="child">
-                                  <object class="GtkBox" id="runlib_objects">
-                                    <property name="orientation">vertical</property>
-                                    <child>
-                                      <object class="GtkLabel" id="label_runlib_objects">
-                                        <property name="justify">center</property>
-                                        <property name="label" translatable="yes">&lt;b&gt;runlib_objects&lt;/b&gt;</property>
-                                        <property name="use-markup">True</property>
-                                        <property name="margin-top">50</property>
-                                        <property name="margin-bottom">50</property>
-                                      </object>
-                                    </child>
-                                  </object>
-                                </property>
-                              </object>
-                            </child>
                             <child>
                               <object class="GtkStackPage">
                                 <property name="name">runlib_states</property>
diff --git a/src/ui/tree.c b/src/ui/tree.c
index 7fe5d1b..b3968d1 100644
--- a/src/ui/tree.c
+++ b/src/ui/tree.c
@@ -176,22 +176,16 @@ tree_c_test(void)
 static void tree_c_printing_test(void)
 {
     printf("tree_c_printing_test() \
-------------------------------------------------------------------\n\
-(https://en.wikibooks.org/wiki/GTK (modulo) 2B_By_Example/Tree_View/Columns_and_Renderer)\n\
-Trying to adapt the first example of this tuto to display a simple tree view in our window.\n\
-Can't use :\n\
-   - gtk_init(&argc, &argv);\n\
-   - window = gtk_tree_view_new(GTK_WINDOW_TOPLEVEL);\n\
-   - g_signal_connect(window, 'delete_event', gtk_main_quit, NULL);\n\
-   - tree_c_test(); (or : create_view_and_model() or some equivalent tree description)\n\
-   - gtk_container_add(GTK_CONTAINER(window), view);\n\
-   - gtk_widget_show_all(window);\n\
-   - gtk_main();\n\
-(see main.c lines 35-44)\n\
+-----------------------------------\n\
+Changement de cap : comment mettre un label (puis un arbre)\n\
+  dans la GtkBox *runlib_objects; de windows.c (ligne 61)\n\
+                          ?\n\
 ");
 }
 
 //  https://en.wikibooks.org/wiki/GTK%2B_By_Example/Tree_View/Tree_Models
+//  https://stackoverflow.com/questions/74556059/how-to-build-a-tree-in-gtk4-4-10
+//
 
 /*
 https://stackoverflow.com/questions/51002454/how-to-list-all-the-rows-of-a-gtk-treeview
@@ -328,3 +322,18 @@ public class SharpApp : Window
 }
 */
 
+
+
+/*
+(https://en.wikibooks.org/wiki/GTK%2B_By_Example/Tree_View/Columns_and_Renderer)\n\
+Trying to adapt the first example of this tuto to display a simple tree view in our window.\n\
+Can't use :\n\
+   - gtk_init(&argc, &argv);\n\
+   - window = gtk_tree_view_new(GTK_WINDOW_TOPLEVEL);\n\
+   - g_signal_connect(window, 'delete_event', gtk_main_quit, NULL);\n\
+   - tree_c_test(); (or : create_view_and_model() or some equivalent tree description)\n\
+   - gtk_container_add(GTK_CONTAINER(window), view);\n\
+   - gtk_widget_show_all(window);\n\
+   - gtk_main();\n\
+(see main.c lines 35-44)\n\
+*/