diff --git a/01.curriculum/01.physics-chemistry-biology/03.Niv3/04.electromagnetism/cheatsheet.fr.md b/01.curriculum/01.physics-chemistry-biology/03.Niv3/04.electromagnetism/cheatsheet.fr.md
index 2daf8920f..e082d38a1 100644
--- a/01.curriculum/01.physics-chemistry-biology/03.Niv3/04.electromagnetism/cheatsheet.fr.md
+++ b/01.curriculum/01.physics-chemistry-biology/03.Niv3/04.electromagnetism/cheatsheet.fr.md
@@ -7,4 +7,10 @@ Published : false
 
 <!--pour niveau "contreforts"-->
 
-![](general-scheme-electromagnetism-vacuum.jpg)
\ No newline at end of file
+![](general-scheme-electromagnetism-vacuum.jpg)
+
+### Domaine de validité
+
+### Un bref historique
+
+### Guide d'apprentissage au niveau contreforts
\ No newline at end of file