diff --git a/module2/ressources/rr_org/init.el b/module2/ressources/rr_org/init.el
index ec1338172bd9a8d2d2799223157328908529355a..de9ecce56c428f778b6d962cb1f9e77d1a1f78c9 100644
--- a/module2/ressources/rr_org/init.el
+++ b/module2/ressources/rr_org/init.el
@@ -33,23 +33,6 @@
 
 (cua-mode t)
 
-(defun jump-mark ()
-  (interactive)
-  (set-mark-command (point)))
-(defun beginning-of-defun-and-mark ()
-  (interactive)
-  (push-mark (point))
-  (beginning-of-defun))
-(defun end-of-defun-and-mark ()
-  (interactive)
-  (push-mark (point))
-  (end-of-defun))
-
-(global-set-key "\^c\^b" 'beginning-of-defun-and-mark)
-(global-set-key "\^c\^e" 'end-of-defun-and-mark)
-(global-set-key "\^c\^j" 'jump-mark)
-(global-set-key [S-f6] 'jump-mark)		;; jump from mark to mark
-
 (global-set-key "\M-g" 'goto-line)
 
 (global-set-key (kbd "C-+") 'text-scale-increase)
diff --git a/module2/ressources/rr_org/init.org b/module2/ressources/rr_org/init.org
index 36c4884baca1342c93e5a68865fc37d95ddbc82c..e1877bee77b4bcb940c5789b6642c608b881ed42 100644
--- a/module2/ressources/rr_org/init.org
+++ b/module2/ressources/rr_org/init.org
@@ -88,8 +88,8 @@ my other shortcuts (e.g., the ones for spelling a region).
 #+begin_src emacs-lisp :tangle init.el
 (cua-mode t)
 #+end_src
-** Navigate back in text 					     :ARNAUD:
-#+begin_src emacs-lisp :tangle init.el
+** Navigate back in text                                   :ARNAUD:noexport:
+#+begin_src emacs-lisp
 (defun jump-mark ()
   (interactive)
   (set-mark-command (point)))