Update...

Update 12.temporary_ins/80.energie-transformations-applications-impacts/20.n2/50.energy-mix/40.TD-hydroelectricity/50.planetary-and-social-limits/20.overview/cheatsheet.fr.md

12.temporary_ins/80.energie-transformations-applications-impacts/20.n2/50.energy-mix/40.TD-hydroelectricity/50.planetary-and-social-limits/20.overview/cheatsheet.fr.md

@@ -3,12 +3,15 @@ title: Les ondes
 published: true
 routable: true
 visible: false
+---
+
+<!--
 lessons:
     -
       slug: TD4-hydroelectricity-planetary-and-social-boundaries
       name: SYSTÈMES-2 : TD4, limites planétaires et sociales
       order: 1
----
+-->
 
 <!--Commandes Latex spécifiques
 $`\def\dens{\large{\varrho}\normalsize}`$