diff --git a/include/base.h b/include/base.h
index 1bea733..5e49fe3 100644
--- a/include/base.h
+++ b/include/base.h
@@ -27,8 +27,8 @@
 /*                                                                            */
 /*                     E coli by David S. Goodsell (2009)                     */
 /*                                   ---                                      */
-/*               Let this freeze frame guide us towards the model             */
-/*                  that alone can account for the phenomenon !               */
+/*        Knowing that only a dynamic model can explain this phenomenon,      */
+/*             let's let this beautiful freeze frame be our guide.            */
 /*                                                                            */
 /******************************************************************************/
 
diff --git a/include/contain.h b/include/contain.h
index a082e55..e1c089c 100644
--- a/include/contain.h
+++ b/include/contain.h
@@ -1,9 +1,9 @@
-//******************************************************************************/
+/******************************************************************************/
 /*                                                                            */
 /*                     E coli by David S. Goodsell (2009)                     */
 /*                                   ---                                      */
-/*               Let this freeze frame guide us towards the model             */
-/*                  that alone can account for the phenomenon !               */
+/*        Knowing that only a dynamic model can explain this phenomenon,      */
+/*             let's let this beautiful freeze frame be our guide.            */
 /*                                                                            */
 /******************************************************************************/
 
diff --git a/include/hot.h b/include/tree.h
similarity index 85%
rename from include/hot.h
rename to include/tree.h
index ba38ca0..b1d95d7 100644
--- a/include/hot.h
+++ b/include/tree.h
@@ -2,8 +2,8 @@
 /*                                                                            */
 /*                     E coli by David S. Goodsell (2009)                     */
 /*                                   ---                                      */
-/*               Let this freeze frame guide us towards the model             */
-/*                  that alone can account for the phenomenon !               */
+/*        Knowing that only a dynamic model can explain this phenomenon,      */
+/*             let's let this beautiful freeze frame be our guide.            */
 /*                                                                            */
 /******************************************************************************/
 
diff --git a/src/ui/application.c b/src/ui/application.c
index 37d9465..519e291 100644
--- a/src/ui/application.c
+++ b/src/ui/application.c
@@ -24,7 +24,7 @@
 
 #include "../../include/ui.h"
 
-#define COMMUTE 0  //  0  first design (2023) based on  <gemgraph.ui>  XML data
+#define COMMUTE 1  //  0  first design (2023) based on  <gemgraph.ui>  XML data
                    //  1  2024 May design, free of the XML encryption mechanism
 
 /*  Window actual presentation on screen  */
diff --git a/src/ui/bac_a_sable.ui b/src/ui/bac_a_sable.ui
deleted file mode 100644
index aa50bb3..0000000
--- a/src/ui/bac_a_sable.ui
+++ /dev/null
@@ -1,37 +0,0 @@
-<?xml version='1.0' encoding='UTF-8'?>
-<!-- Created with Cambalache 0.14.0 -->
-<interface>
-  <!-- interface-name gem-graph.ui -->
-  <requires lib="gtk" version="4.6"/>
-  <template class="GemGraphClientWindow" parent="GtkApplicationWindow">
-    <property name="icon-name">application-x-executable</property>
-    <property name="title">WIP</property>
-    <child>
-      <object class="GtkBox">
-        <child>
-          <object class="GtkBox">
-            <child>
-              <object class="GtkGLArea" id="run_glarea"/>
-            </child>
-          </object>
-        </child>
-        <child>
-          <object class="GtkBox" id="run_controls">
-            <property name="margin-bottom">50</property>
-            <property name="margin-top">50</property>
-            <property name="orientation">horizontal</property>
-          </object>
-        </child>
-        <child>
-          <object class="GtkBox" id="glarea_controls"/>
-        </child>
-      </object>
-    </child>
-    <child type="titlebar">
-      <object class="GtkHeaderBar" id="main_titlebar"/>
-    </child>
-    <style>
-      <class name="devel"/>
-    </style>
-  </template>
-</interface>
diff --git a/src/ui/contain.c b/src/ui/contain.c
index b4cbd61..136b167 100644
--- a/src/ui/contain.c
+++ b/src/ui/contain.c
@@ -1,7 +1,7 @@
 #include <stdio.h>
 #include <gtk-4.0/gtk/gtk.h>
 
-#include "../../include/hot.h"
+#include "../../include/tree.h"
 #include "../../include/display.h"
 #include "../../include/contain.h"
 #include "../../include/texts.h"
diff --git a/src/ui/display.c b/src/ui/display.c
index aa46004..1bad14f 100644
--- a/src/ui/display.c
+++ b/src/ui/display.c
@@ -1,7 +1,16 @@
+/******************************************************************************/
+/*                                                                            */
+/*                     E coli by David S. Goodsell (2009)                     */
+/*                                   ---                                      */
+/*        Knowing that only a dynamic model can explain this phenomenon,      */
+/*             let's let this beautiful freeze frame be our guide.            */
+/*                                                                            */
+/******************************************************************************/
+
 #include <stdio.h>
 #include <gtk-4.0/gtk/gtk.h>
 
-#include "../../include/hot.h"
+#include "../../include/tree.h"
 #include "../../include/display.h"
 #include "../../include/contain.h"
 #include "../../include/texts.h"
diff --git a/src/ui/hot.c b/src/ui/tree.c
similarity index 100%
rename from src/ui/hot.c
rename to src/ui/tree.c
diff --git a/src/ui/views.c b/src/ui/views.c
index 3819c53..0ef9ff5 100644
--- a/src/ui/views.c
+++ b/src/ui/views.c
@@ -30,7 +30,7 @@
 
 #include "../../include/base.h"
 #include "../../include/ui.h"
-#include "../../include/hot.h"
+#include "../../include/tree.h"
 
 // Recursive function to free a TreeNode and its children
 static void free_tree_node (struct TreeNode_t *node)