diff --git a/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.en.md b/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.en.md
index 315d58555..fc47c79c5 100644
--- a/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.en.md
+++ b/12.temporary_ins/10.electrostatics-vacuum/30.gauss-theorem-demonstration/20.overview/cheatsheet.en.md
@@ -17,8 +17,8 @@ $`\def\Ssclosed{\mathscr{S}_{\scriptsize\bigcirc}}`$
 $`\def\PSopen{\mathscr{S}_{\smile}}`$
 $`\def\PSclosed{\mathscr{S}_{\displaystyle\tiny\bigcirc}}`$
 
-!!!! *LESSON UNDER CONSTRUCTION :* <br>
-!!!! *Not published, not visible, not yet approved*<br>
+!!!! *LESSON  UNDER  CONSTRUCTION :* <br>
+!!!! Published but invisible: does not appear in the tree structure of the m3p2.com site. This course is *under construction*, it is *not approved by the pedagogical team* at this stage. <br>
 !!!! Working document intended only for the pedagogical team.
 
 !  *Topic* :<br>