diff --git a/cold.c b/cold.c
index 3a8e919..ee69459 100644
--- a/cold.c
+++ b/cold.c
@@ -1,7 +1,3 @@
 #include <stdio.h>
 #include <gtk-4.0/gtk/gtk.h>
-#include "cold.h"
-#include "widgets.h"
-#include "pages.h"
 
-void print_text(GtkWidget *widget, gpointer data) {g_print (data);}
diff --git a/cold.d b/cold.d
index f5f72b2..d197c4b 100644
--- a/cold.d
+++ b/cold.d
@@ -1 +1 @@
-cold.o: cold.c cold.h widgets.h pages.h
+cold.o: cold.c
diff --git a/cold.h b/cold.h
index 67e9bfe..6ae26e1 100644
--- a/cold.h
+++ b/cold.h
@@ -7,4 +7,3 @@
 /*                                                                            */
 /******************************************************************************/
 
-void print_text(GtkWidget *widget, gpointer data);
diff --git a/cold.o b/cold.o
index bc31a1b..76f8b2e 100644
Binary files a/cold.o and b/cold.o differ
diff --git a/hot.c b/hot.c
index e8249e8..ac37d86 100644
--- a/hot.c
+++ b/hot.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <gtk-4.0/gtk/gtk.h>
+
 #include "warm.h"
 #include "cold.h"
 #include "widgets.h"
diff --git a/hot.h b/hot.h
index f89b6d0..3353fb3 100644
--- a/hot.h
+++ b/hot.h
@@ -7,8 +7,6 @@
 /*                                                                            */
 /******************************************************************************/
 
-#include <stdio.h>
-#include <gtk-4.0/gtk/gtk.h>
 #include "warm.h"
 #include "cold.h"
 #include "widgets.h"
diff --git a/E coli by David S. Goodsell (2009).png b/image E coli (Goodsell).png
similarity index 100%
rename from E coli by David S. Goodsell (2009).png
rename to image E coli (Goodsell).png
diff --git a/image aXoris.png b/image aXoris.png
new file mode 100644
index 0000000..1994d91
Binary files /dev/null and b/image aXoris.png differ
diff --git a/image gg sketch.png b/image gg sketch.png
new file mode 100644
index 0000000..7af2e55
Binary files /dev/null and b/image gg sketch.png differ
diff --git a/main.d b/main.d
index 46f908e..3a2ea19 100644
--- a/main.d
+++ b/main.d
@@ -1,3 +1,89 @@
 main.o: main.c hot.h warm.h \
  /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/galloca.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gtypes.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/lib/glib-2.0/include/glibconfig.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmacros.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gversionmacros.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/glib-visibility.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/garray.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gasyncqueue.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gthread.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gatomic.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/glib-typeof.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gerror.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gquark.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gutils.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gbacktrace.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gbase64.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gbitlock.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gbookmarkfile.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gdatetime.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gtimezone.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gbytes.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gcharset.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gchecksum.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gconvert.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gdataset.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gdate.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gdir.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/genviron.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gfileutils.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/ggettext.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/ghash.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/glist.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmem.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gnode.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/ghmac.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gchecksum.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/ghook.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/ghostutils.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/giochannel.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmain.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gpoll.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gslist.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gstring.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gunicode.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gstrfuncs.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gkeyfile.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmappedfile.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmarkup.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmessages.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gvariant.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gvarianttype.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/goption.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gpathbuf.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gpattern.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gprimes.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gqsort.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gqueue.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/grand.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/grcbox.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/grefcount.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/grefstring.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmem.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gmacros.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gregex.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gscanner.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gsequence.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gshell.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gslice.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gspawn.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gstringchunk.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gstrvbuilder.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gtestutils.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gthreadpool.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gtimer.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gtrashstack.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gtree.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/guri.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/guuid.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/gversion.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/deprecated/gallocator.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/deprecated/gcache.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/deprecated/gcompletion.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/deprecated/gmain.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/deprecated/grel.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/deprecated/gthread.h \
+ /gnu/store/fkmpkdav2zmz1k72989bdgpdrfac7rz1-glib-2.78.0/include/glib-2.0/glib/glib-autocleanups.h \
  cold.h widgets.h pages.h
diff --git a/main.o b/main.o
index c0d6b89..3b05a94 100644
Binary files a/main.o and b/main.o differ
diff --git a/myprogram b/myprogram
index 747f707..4458700 100755
Binary files a/myprogram and b/myprogram differ
diff --git a/pages.c b/pages.c
index d1b02ae..f85b980 100644
--- a/pages.c
+++ b/pages.c
@@ -1,5 +1,6 @@
 #include <stdio.h>
 #include <gtk-4.0/gtk/gtk.h>
+
 #include "cold.h"
 #include "widgets.h"
 #include "pages.h"
@@ -85,7 +86,7 @@ GtkWidget *get_run_rules_page_new(){
 GtkWidget *get_edit_space_page_new(){
 
   GtkWidget *space_grid = gtk_grid_new();
-  gtk_grid_attach (GTK_GRID(space_grid), get_a_space_test_image(), 0, 0, 1, 3);
+  gtk_grid_attach (GTK_GRID(space_grid), get_test_image(), 0, 0, 1, 3);
   gtk_grid_attach (GTK_GRID(space_grid), get_objects_and_situations_horizontal_pane(), 0, 4, 1, 1);
   gtk_grid_attach (GTK_GRID(space_grid), GTK_WIDGET(get_XYZ_box()), 1, 0, 1, 2);
   gtk_grid_attach (GTK_GRID(space_grid), GTK_WIDGET(get_ZOOM_box()), 1, 2, 1, 2);
@@ -103,7 +104,7 @@ GtkWidget *get_run_space_page_new(){
 //  attach either : get_ELAPSED_TIME_box()   or   get_simulation_time_extent_buffer()
   gtk_grid_attach (GTK_GRID(space_grid), GTK_WIDGET(get_ELAPSED_TIME_box()), 0, 0, 1, 1);
 //  gtk_grid_attach (GTK_GRID(space_grid), GTK_WIDGET(get_simulation_time_extent_buffer()), 0, 0, 1, 1);
-  gtk_grid_attach (GTK_GRID(space_grid), get_a_space_test_image(), 0, 1, 1, 3);
+  gtk_grid_attach (GTK_GRID(space_grid), get_test_image(), 0, 1, 1, 3);
   gtk_grid_attach (GTK_GRID(space_grid), get_objects_and_situations_horizontal_pane(), 0, 4, 1, 1);
   gtk_grid_attach (GTK_GRID(space_grid), GTK_WIDGET(get_RUN_STOP_box()), 1, 0, 1, 1);
   gtk_grid_attach (GTK_GRID(space_grid), get_scroll_speed(), 1, 1, 1, 1);
diff --git a/pages.h b/pages.h
index cfe8c30..cbda6cf 100644
--- a/pages.h
+++ b/pages.h
@@ -7,8 +7,6 @@
 /*                                                                            */
 /******************************************************************************/
 
-#include <stdio.h>
-#include <gtk/gtk.h>
 #define W 1920
 #define H 960
 #define W_IMAGE 1920 - 64
diff --git a/pages.o b/pages.o
index 335eb78..aaa50c9 100644
Binary files a/pages.o and b/pages.o differ
diff --git a/warm.c b/warm.c
index f124d76..3db4c99 100644
--- a/warm.c
+++ b/warm.c
@@ -1,6 +1,6 @@
 #include <stdio.h>
 #include <gtk-4.0/gtk/gtk.h>
-#include "warm.h"
+
 #include "cold.h"
 #include "widgets.h"
 #include "pages.h"
diff --git a/warm.h b/warm.h
index 9e336be..0b406b6 100644
--- a/warm.h
+++ b/warm.h
@@ -7,7 +7,7 @@
 /*                                                                            */
 /******************************************************************************/
 
-#pragma once
+#pragma once  //  <  WTF !?
 
 #include <assert.h>
 #include <errno.h>
diff --git a/widgets.c b/widgets.c
index ac0497e..570e2d4 100644
--- a/widgets.c
+++ b/widgets.c
@@ -1,17 +1,18 @@
 #include <stdio.h>
 #include <gtk-4.0/gtk/gtk.h>
+
 #include "cold.h"
 #include "widgets.h"
 #include "pages.h"
 
-GtkWidget *get_a_space_test_image(){
+GtkWidget *get_test_image(){
   GtkWidget *image;
-  image = GTK_WIDGET(get_scrolled_gl_area());
-  image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/images/aXoris.png");
-  image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/images/gg sketch.png");
-  image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/images/E coli.png");
-  image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/images/E coli resized.png");
-  image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/Getting_Started_with_GTK/E coli by David S. Goodsell (2009).png");
+  //  forget  >  GTK_WIDGET(get_scrolled_gl_area());
+  //  Use GtkImage if you want to display a fixed-size icon
+  //  and GtkPicture if you want to display a (maybe) scaled picture.
+  image = gtk_image_new_from_file("/home/jean/01/Gtk4/Getting_Started_with_GTK/image aXoris.png");
+  image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/Getting_Started_with_GTK/image gg sketch.png");
+  image = gtk_picture_new_for_filename ("/home/jean/01/Gtk4/Getting_Started_with_GTK/image E coli (Goodsell).png");
   return image;
 }
 
@@ -123,7 +124,7 @@ GtkBox *get_objects_box(){
 GtkBox *get_situations_box(){
   GtkBox *situations_box = GTK_BOX(gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 0));
   gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   transcription     ")));
-  gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   épissage     ")));
+  gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   promotion opéron lactose    ")));
   gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   translation     ")));
   gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   transport Na/K     ")));
   gtk_box_append (situations_box, GTK_WIDGET (gtk_label_new ("   ubiquitination     ")));
diff --git a/widgets.h b/widgets.h
index 1bbf36b..d7b4165 100644
--- a/widgets.h
+++ b/widgets.h
@@ -7,7 +7,7 @@
 /*                                                                            */
 /******************************************************************************/
 
-GtkWidget *get_a_space_test_image();
+GtkWidget *get_test_image();
 GtkScrolledWindow *get_scrolled_gl_area();
 GtkBox *get_RUN_STOP_box();
 GtkBox *get_STEP_by_STEP_box();
diff --git a/widgets.o b/widgets.o
index 73b65d9..3ca97f5 100644
Binary files a/widgets.o and b/widgets.o differ