diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/coordinates-systems/spherical/cheatsheet.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/coordinates-systems/spherical/cheatsheet.fr.md
index c272d7e4a..39d344ee8 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/coordinates-systems/spherical/cheatsheet.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/04.reference-frames-coordinate-systems/coordinates-systems/spherical/cheatsheet.fr.md
@@ -6,6 +6,10 @@ visible: false
 
 <!--MétaD : INSAT-TR_-->
 
+!!!! Cours en construction !
+!!!! Imparfait, incomplet
+!!!! Ne pas publier, ne pas mettre visible
+
 #### Que sont les coordonnées sphériques ?
 
 * 3 coordonnées *spatiales* : **$`\mathbf{r\;,\;\theta\;,\;\varphi}`$**