diff --git a/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/30.beyond/annex.fr.md b/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/30.beyond/annex.fr.md
index d051da33f..38ad06fb5 100644
--- a/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/30.beyond/annex.fr.md
+++ b/12.temporary_ins/05.coordinates-systems/20.cartesian-coordinates/30.beyond/annex.fr.md
@@ -76,4 +76,14 @@ lessons:
 !!! Texte de la solution
 !!! </details>
 
+!!!! *POINT  DIFFICILE* (contribuer, ou indiquer les points difficiles qui méritent d'être repris)
+!!!!
+
+!! *AU-DELÀ* (contribuer)
+!!
+
+!! *ÉCHAPPÉE CULTURELLE* (contribuer)
+!!
+
+