diff --git a/exec b/exec
index 5058b60..bc4e8b4 100755
Binary files a/exec and b/exec differ
diff --git a/main.c b/main.c
index 9b1ec91..e60d282 100755
--- a/main.c
+++ b/main.c
@@ -1,3 +1,17 @@
+/*  GtkBox       GtkGrid     GtkRevealer    GtkStack
+ *  GtkOverlay   GtkPaned    GtkExpander    GtkFixed  */
+
+/*  box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 0);
+    gtk_widget_set_halign (box, GTK_ALIGN_FILL);
+    gtk_widget_set_valign (box, GTK_ALIGN_CENTER); *  START  CENTER  END  FILL *
+    gtk_window_set_child (GTK_WINDOW (window), box);
+    puis, après déclaration du bouton, gtk_box_append (GTK_BOX (box), button); */
+
+/*  grid = gtk_grid_new ();
+    gtk_window_set_child (GTK_WINDOW (window), grid);
+    button = gtk_button_new_with_label (" I ");               n fois
+    gtk_grid_attach (GTK_GRID (grid), button, 0, 0, 1, 1);    n fois  */
+
 #include <gtk/gtk.h>
 
 static void print (GtkWidget *widget, gpointer data) {g_print (data);}
@@ -10,8 +24,8 @@ static void activate (GtkApplication *app, gpointer user_data) {
   window = gtk_application_window_new (app);
   gtk_window_set_title (GTK_WINDOW (window), "Window");
 
-   grid = gtk_grid_new ();
-   gtk_window_set_child (GTK_WINDOW (window), grid);
+  grid = gtk_grid_new ();
+  gtk_window_set_child (GTK_WINDOW (window), grid);
 
   button = gtk_button_new_with_label (" I ");
   g_signal_connect (button, "clicked", G_CALLBACK (print), "I'm n°1\n");