diff --git a/misc/check_zope_usage.py b/misc/check_zope_usage.py
new file mode 100755
index 000000000..85ffd7ab8
--- /dev/null
+++ b/misc/check_zope_usage.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+"""Check usage of (published) ScoDoc methods
+
+Quick method: just grep method name in all constant strings from the source code base.
+
+Usage:
+    check_zope_usage.py methods-list.txt string-constants.txt
+
+methods-list.txt : fichier texte, module et un nom de méthode / ligne
+                      ZScoUsers	get_userlist
+string-constants.txt : les constantes chaines, extraites par extract_code_strings.py
+                      "scolars.py"	"</li><li>"
+
+E. Viennet 2021-01-09
+"""
+from __future__ import print_function
+
+import sys
+
+methods_filename = sys.argv[1]
+constants_filename = sys.argv[2]
+
+with open(methods_filename) as f:
+    methods = [l.strip().split("\t")[1] for l in f]
+
+print("%d methods" % len(methods))
+
+with open(constants_filename) as f:
+    constants = [l[:-1].split("\t")[1] for l in f]
+
+print("%d constants" % len(constants))
+
+for method in methods:
+    n = 0
+    for c in constants:
+        if method in c:
+            n += 1
+    print("%s\t%s" % (method, n))
diff --git a/misc/extract_code_strings.py b/misc/extract_code_strings.py
index 4812756dc..01f894e2f 100755
--- a/misc/extract_code_strings.py
+++ b/misc/extract_code_strings.py
@@ -5,7 +5,7 @@
 Useful to check if an API function is used in a generated web page !
 
 Usage:
-    extract_code_strings.py source.py ...
+    extract_code_strings.py source.py ... > string-constants.txt
 
 (replace RT by an existing departement id)
 
@@ -15,13 +15,24 @@ from __future__ import print_function
 
 import sys
 import ast
+import types
 
 L = []
 for srcfilename in sys.argv[1:]:
-    print("processing %s" % srcfilename, file=sys.stderr)
+    # print("processing %s" % srcfilename, file=sys.stderr)
     with open(srcfilename) as f:
         p = ast.parse(f.read())
-        L.extend(x.s.strip() for x in ast.walk(p) if x.__class__ == ast.Str)
+        # L.extend(x.s.strip() for x in ast.walk(p) if x.__class__ == ast.Str)
+        for x in ast.walk(p):
+            if x.__class__ == ast.Str:
+                if type(x.s) == types.StringType:
+                    s = x.s
+                else:
+                    s = x.s.encode("UTF-8")
+                # remove tabs and cr
+                s = s.translate(None, "\t\n")
+                if len(s):
+                    print("%s\t%s" % (srcfilename, s))
 
-L = sorted(set(L))  # uniq | sort
-print("\n".join(L))
+# L = sorted(set(L))  # uniq | sort
+# print("\n".join(L))
diff --git a/sco_zope.py b/sco_zope.py
index a7bac8932..bf9d8d271 100644
--- a/sco_zope.py
+++ b/sco_zope.py
@@ -52,15 +52,16 @@ file_path = Globals.package_home(globals())
 
 import inspect
 
-LOG_SECURITY=False # use for dev
+LOG_SECURITY = False  # use for dev
+
 
 class ClassSecurityInfo(ZopeClassSecurityInfo):
     def declareProtected(self, perm, funcname):
         if LOG_SECURITY:
             frame = inspect.currentframe()
-            module = frame.f_back.f_locals["__module__"]
-            if str(module).strip() == "ZAbsences":
-                raise Exception()
+            module = str(frame.f_back.f_locals["__module__"])
+            assert module.startswith("Products.ScoDoc.")
+            module = module[len("Products.ScoDoc.") :]
             with open("/tmp/protected_methods.txt", "a") as f:
                 f.write("%s\t%s\n" % (module, funcname))
         super(ClassSecurityInfo, self).declareProtected(perm, funcname)