diff --git a/include/prefer.h b/include/prefer.h
index 21c81df..0296879 100644
--- a/include/prefer.h
+++ b/include/prefer.h
@@ -37,4 +37,4 @@ const char get_button_icon_name (int n);
 
 void fsm_reset_all_situations_transparencies_at_value (int value); // provisoire...
 
-void *prefer_add_measure (char *measure_name);
+void *fsm_add_measure (char *measure_name);
diff --git a/src/fsm.c b/src/fsm.c
index d49b922..8aefc35 100644
--- a/src/fsm.c
+++ b/src/fsm.c
@@ -35,12 +35,12 @@
 
 
 /******************************************************************************/
-/*           Each state of the finite state machine (fsm) must be             */
-/*                - saved at the end of a work session and                    */
-/*                - reread at the start of a new session.                     */
+/*            Each state of the finite state machine (fsm) must be            */
+/*                 - saved at the end of a work session and                   */
+/*                 - reread at the start of a new session.                    */
 /*                                                                            */
-/*              No state of the fsm should be stored elsewhere.               */
-/*             No fsm transition needs to be executed elsewhere.              */
+/*          No state of the fsm should be defined  in another module.         */
+/*          No fsm transition needs to be executed in another module.         */
 /******************************************************************************/
 
 
@@ -93,11 +93,11 @@ void fsm_set_state_rules_data (int choice)
 /******************************************************************************/
 /*                           M E A S U R E M E N T S                          */
 /******************************************************************************/
-//  An editable list of measurements is maintained.  (add, remove)
+//  An editable list of measurements is defined and maintained here.
 //  Each measurement can be activated or silenced.
 
 //  The measures relate to
-//  - the number of occurrences of the rule,
+//  - the number of occurrences of a rule or group of rules,
 //  - the number of objects or situations before/after the rule was applied,
 //  - the time (date) of the event,
 //  - the time elapsed between two events,
@@ -107,6 +107,18 @@ void fsm_set_state_rules_data (int choice)
 //  if the results of a measurement are correlated with some other results.
 
 
+//  structure de données : tableau ?
+//  - identifiant (clé)
+//  - pointeur vers une liste de mesures similaires
+//  - active ? + / -
+//  - type de mesure (les 6 items suivants "couvrent" tous les types possibles)
+//  - pointeur vers le premier groupe de règles (une au moins)
+//  - pointeur vers le second groupe de règles (une au moins)
+//  - pointeur vers les objets ou situations (un au moins)
+//  - date
+//  - durée
+//  - pointeur vers un ensemble d'évènements intercurrents
+
 
 
 
@@ -118,6 +130,19 @@ void fsm_set_state_rules_data (int choice)
 //  A preferred presentation should be available for each result.
 //  NB :  "graph", "chart", "plot" and "diagram" are ambiguous terms.
 
+//  The list of results currently displayed is defined in : prefer.c
+
+//  structure de données : tableau ?
+//  - identifiant (clé))
+//  - type de données 1
+//  - type de données 2
+//  - ... ?
+//  - pointeur vers le premier groupe de données
+//  - pointeur vers le second groupe de données
+//  - ... ?
+//  - pointeur vers une liste de données similaires
+//  - concat ?
+
 
 
 
diff --git a/src/prefer.c b/src/prefer.c
index bab564c..7d4d801 100644
--- a/src/prefer.c
+++ b/src/prefer.c
@@ -58,6 +58,11 @@ static const char *icon_name [3] = {
 //  transtypage vers un pointeur depuis un entier de taille différente   vvv  TODO
 const char *get_button_icon_name (int n) {return (const char*) icon_name [n];}
 
+
+/******************************************************************************/
+/*                      S T A T E   A P P E A R A N C E                       */
+/******************************************************************************/
+
 //  -------------------------   O B J E C T S   ------------------------------//
 
 struct preferences { int transparency [n_objects]; };   //  may become a long, long list...
@@ -109,13 +114,13 @@ void fsm_reset_all_situations_transparencies_at_value (int value)
 
 
 /******************************************************************************/
-/*                               M E A S U R E S                              */
+/*                     D I S P L A Y E D   R E S U L T S                      */
 /******************************************************************************/
 
 static void *list_measures;
 
-void *prefer_add_measure (char *measure_name)
+void *fsm_add_measure (char *measure_name)
 {
-    printf("prefer_add_measure  %p   <<<   %s   (see prefer.c)\n", list_measures, measure_name);
+    printf("fsm_add_measure  %p   <<<   %s   (see prefer.c)\n", list_measures, measure_name);
     return NULL;
 }
diff --git a/src/widget/measure/dispatch.c b/src/widget/measure/dispatch.c
index fd06ef6..1a137f3 100644
--- a/src/widget/measure/dispatch.c
+++ b/src/widget/measure/dispatch.c
@@ -53,31 +53,31 @@ static GtkBox *measure_page;
 
 void *widget_measure_event_occurences_nb()
 {
-    prefer_add_measure ("new measure count one event occurences");
+    fsm_add_measure ("new measure count one event occurences");
     return measure_page;
 }
 
 void *widget_measure_event_occurences_dates()
 {
-    prefer_add_measure ("new measure one event occurences dates");
+    fsm_add_measure ("new measure one event occurences dates");
     return measure_page;
 }
 
 void *widget_measure_event_occurences_situations()
 {
-    prefer_add_measure ("new measure one event occurences situations");
+    fsm_add_measure ("new measure one event occurences situations");
     return measure_page;
 }
 
 void *widget_measure_time_elapsed_between_two_events()
 {
-    prefer_add_measure ("new measure time elapsed between two events");
+    fsm_add_measure ("new measure time elapsed between two events");
     return measure_page;
 }
 
 void *widget_measure_third_event_occurences_in_between()
 {
-    prefer_add_measure ("new measure of the frequency of a third event\
+    fsm_add_measure ("new measure of the frequency of a third event\
  occurring between two other events");
     return measure_page;
 }