diff --git a/Makefile b/Makefile
index 1dda004..c84ec71 100644
--- a/Makefile
+++ b/Makefile
@@ -21,11 +21,9 @@ exec.o: hot.c warm.c cold.c main.c Makefile
 clean:
 	rm -f exec.o
 
-# Builder will call this to install the application before running.
 install:
 	echo "Installing is not supported"
 
-# Builder uses this target to run your application.
 run: exec.o
 	./exec.o
 
diff --git a/exec.o b/exec.o
index 9723bd6..cadfb24 100755
Binary files a/exec.o and b/exec.o differ
diff --git a/hot.c b/hot.c
index e711e60..ceef7bc 100644
--- a/hot.c
+++ b/hot.c
@@ -5,8 +5,22 @@
 #include "cold.h"
 
 GtkWidget *get_space_page_new(){
-  GtkWidget * space_grid = gtk_grid_new();
-  gtk_grid_attach (GTK_GRID(space_grid), gtk_button_new_with_label ("Hi babe...here am I !"), 0, 0, 1, 1);
+  GtkWidget *space_grid = gtk_grid_new();
+
+  GtkDrawingArea *surface = GTK_DRAWING_AREA(gtk_drawing_area_new ());
+  gtk_drawing_area_set_content_width (surface, 640);
+  gtk_drawing_area_set_content_height (surface, 600);
+  gtk_grid_attach (GTK_GRID(space_grid), GTK_WIDGET(surface), 0, 0, 1, 1);
+
+  GtkBox *XYZ_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 2)); // spacing = 2
+  gtk_box_append (XYZ_box, gtk_button_new_with_label ("X"));
+  gtk_box_append (XYZ_box, gtk_button_new_with_label ("Y"));
+  gtk_box_append (XYZ_box, gtk_button_new_with_label ("Z"));
+  gtk_grid_attach (GTK_GRID(space_grid), GTK_WIDGET(XYZ_box), 1, 0, 1, 1);
+
+  gtk_grid_attach (GTK_GRID(space_grid), gtk_button_new_with_label ("RUN / STOP (and all that stuff...)"), 0, 1, 2, 1);
+  gtk_grid_attach (GTK_GRID(space_grid), gtk_button_new_with_label ("Objects / Situations (transparences)"), 0, 2, 2, 1);
+  gtk_grid_attach (GTK_GRID(space_grid), gtk_button_new_with_label ("camera (zoom...)"), 0, 3, 2, 1);
   return space_grid;
 }
 
diff --git a/warm.c b/warm.c
index 4a3c59b..ded98e5 100644
--- a/warm.c
+++ b/warm.c
@@ -8,8 +8,8 @@ GtkWidget *get_measures_page_new(){
   gtk_grid_attach (GTK_GRID  (measures_grid), gtk_button_new_with_label ("movements"), 0, 0, 1, 1);
   gtk_grid_attach (GTK_GRID  (measures_grid), gtk_button_new_with_label ("transports"), 1, 0, 1, 1);
   gtk_grid_attach (GTK_GRID  (measures_grid), gtk_button_new_with_label ("transformations"), 2, 0, 1, 1);
-  gtk_grid_attach (GTK_GRID  (measures_grid), gtk_button_new_with_label ("objects counts"), 0, 1, 1, 1);
-  gtk_grid_attach (GTK_GRID  (measures_grid), gtk_button_new_with_label ("situations counts"), 1, 1, 1, 1);
+  gtk_grid_attach (GTK_GRID  (measures_grid), gtk_button_new_with_label ("objects"), 0, 1, 1, 1);
+  gtk_grid_attach (GTK_GRID  (measures_grid), gtk_button_new_with_label ("situations"), 1, 1, 1, 1);
   return measures_grid;
 }
 
diff --git a/warm.h b/warm.h
index 44b0e9a..497dd4b 100644
--- a/warm.h
+++ b/warm.h
@@ -20,16 +20,16 @@
  * https://stackoverflow.com/questions/20122232/gtklistc-code-how-to-get-the-selection-of-a-gtklist
  *
   GtkWidget *switcher = gtk_stack_switcher_new();
-//  GtkWidget *sidebar  = gtk_stack_sidebar_new();
+  GtkWidget *sidebar  = gtk_stack_sidebar_new();
   gtk_grid_attach (GTK_GRID (grid), switcher, 0, 1, 3, 1);
   gtk_orientable_set_orientation (GTK_ORIENTABLE (switcher), GTK_ORIENTATION_VERTICAL);
   gtk_orientable_set_orientation (GTK_ORIENTABLE (switcher), GTK_ORIENTATION_HORIZONTAL);
   GtkStack *stack = GTK_STACK (gtk_stack_new());
   gtk_stack_switcher_set_stack (GTK_STACK_SWITCHER (switcher), stack);
-//  gtk_stack_sidebar_set_stack (GTK_STACK_SIDEBAR (sidebar), stack);
+  gtk_stack_sidebar_set_stack (GTK_STACK_SIDEBAR (sidebar), stack);
 
-//  GtkWidget *page_0   = gtk_paned_new(GTK_ORIENTATION_VERTICAL);
-//  GtkWidget *page_1   = gtk_paned_new(GTK_ORIENTATION_VERTICAL);
+  GtkWidget *page_0   = gtk_paned_new(GTK_ORIENTATION_VERTICAL);
+  GtkWidget *page_1   = gtk_paned_new(GTK_ORIENTATION_VERTICAL);
   GtkWidget *box_0    = gtk_box_new (0, 0);
   GtkWidget *box_1    = gtk_box_new (0, 0);
   GtkWidget *box_2    = gtk_box_new (0, 0);