diff --git a/sco_dept.py b/sco_dept.py
index f7c95c0ad..4668ae5b5 100644
--- a/sco_dept.py
+++ b/sco_dept.py
@@ -5,7 +5,7 @@
 #
 # Gestion scolarite IUT
 #
-# Copyright (c) 1999 - 2021 Emmanuel Viennet.  All rights reserved.
+# Copyright (c) 1999 - 2020 Emmanuel Viennet.  All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -28,6 +28,7 @@
 """Page accueil département (liste des semestres, etc)
 """
 from notesdb import *
+from sco_dept_filtrage import complete_sem, get_filtrage_html
 from sco_utils import *
 from notes_log import log
 import sco_modalites
@@ -43,9 +44,8 @@ def index_html(context, REQUEST=None, showcodes=0, showsemtable=0):
     H = []
 
     # News:
-    # 2020-12-30: abandonne l'icon rss
-    # rssicon = icontag("rssscodoc_img", title="Flux RSS", border="0")
-    H.append(sco_news.scolar_news_summary_html(context))  # , rssicon=rssicon))
+    rssicon = icontag("rssscodoc_img", title="Flux RSS", border="0")
+    H.append(sco_news.scolar_news_summary_html(context, rssicon=rssicon))
 
     # Avertissement de mise à jour:
     H.append(sco_up_to_date.html_up_to_date_box(context))
@@ -118,6 +118,7 @@ def index_html(context, REQUEST=None, showcodes=0, showsemtable=0):
             % context.get_preference("DeptName")
         )
         H.append(_sem_table_gt(context, sems).html())
+        H.append(get_filtrage_html())
         H.append("</table>")
     if not showsemtable:
         H.append(
@@ -170,7 +171,8 @@ Chercher étape courante: <input name="etape_apo" type="text" size="8"></input>
 
 
 def _sem_table(context, sems):
-    """Affiche liste des semestres, utilisée pour semestres en cours"""
+    """Affiche liste des semestres, utilisée pour semestres en cours
+    """
     tmpl = """<tr class="%(trclass)s">%(tmpcode)s
     <td class="semicon">%(lockimg)s <a href="Notes/formsemestre_status?formsemestre_id=%(formsemestre_id)s#groupes">%(groupicon)s</a></td>        
     <td class="datesem">%(mois_debut)s</td><td class="datesem"><a title="%(session_id)s">-</a> %(mois_fin)s</td>
@@ -202,7 +204,8 @@ def _sem_table(context, sems):
 
 
 def _sem_table_gt(context, sems, showcodes=False):
-    """Nouvelle version de la table des semestres"""
+    """Nouvelle version de la table des semestres
+    """
     _style_sems(context, sems)
     columns_ids = (
         "lockimg",
@@ -217,6 +220,7 @@ def _sem_table_gt(context, sems, showcodes=False):
     if showcodes:
         columns_ids = ("formsemestre_id",) + columns_ids
 
+    complete_sem(sems)
     tab = GenTable(
         titles={
             "formsemestre_id": "id",
@@ -240,7 +244,8 @@ def _sem_table_gt(context, sems, showcodes=False):
 
 
 def _style_sems(context, sems):
-    """ajoute quelques attributs de présentation pour la table"""
+    """ajoute quelques attributs de présentation pour la table
+    """
     for sem in sems:
         sem["_groupicon_target"] = (
             "Notes/formsemestre_status?formsemestre_id=%(formsemestre_id)s" % sem
diff --git a/sco_dept_filtrage.py b/sco_dept_filtrage.py
new file mode 100644
index 000000000..1fd49ba4c
--- /dev/null
+++ b/sco_dept_filtrage.py
@@ -0,0 +1,84 @@
+# -*- mode: python -*-
+# -*- coding: utf-8 -*-
+
+##############################################################################
+#
+# Gestion scolarite IUT
+#
+# Copyright (c) 1999 - 2021 Emmanuel Viennet.  All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+#   Emmanuel Viennet      emmanuel.viennet@viennet.net
+#
+##############################################################################
+import re
+
+from notes_log import log
+
+
+class SemProperty:
+    def __init__(self, prefix):
+        self.index = {}  # valeur : clé
+        self.next_key = 0
+        self.prefix = prefix
+
+    def get_key(self, value):
+        if value in self.index:
+            return self.index[value]
+        else:
+            self.index[value] = self.prefix + "{:02d}".format(self.next_key)
+            self.next_key += 1
+
+    def js(self):
+        returned = "\n"
+        for val in sorted(self.index):
+            returned += "%s:%s\n" % (self.index[val], val)
+        return returned
+
+
+locked = SemProperty("A")
+semestre_id = SemProperty("B")
+modalite = SemProperty("B")
+annee = SemProperty("C")
+titre = SemProperty("D")
+etapes = SemProperty("E")
+
+
+def get_filtrage_html():
+    returned = "<!-- "
+    returned += locked.js()
+    returned += semestre_id.js()
+    returned += modalite.js()
+    returned += annee.js()
+    returned += titre.js()
+    returned += etapes.js()
+    returned += " -->"
+    return returned
+
+
+def complete_sem(sems):
+    for row in sems:
+        classes = []
+        classes.append(locked.get_key(row["lockimg"]))
+        classes.append(semestre_id.get_key(row["semestre_id_n"]))
+        classes.append(modalite.get_key(row["modalite"]))
+        classes.append(annee.get_key(row["anneescolaire"]))
+        pattern = "<a.*>(.*)</a>"
+        title = re.search(pattern, row["titre_resp"]).group(1)
+        classes.append(titre.get_key(title))
+        for etapevdi in row["etapes"]:
+            classes.append(etapes.get_key(etapevdi.etape))
+        row["_css_row_class"] = " ".join([x for x in classes if x is not None])