Update annex.fr.md

12.temporary_ins/40.classical-mechanics/40.n4/70.lagrangian-mechanics/30.beyond/annex.fr.md

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 ##### Randonnée Contreforts :  _toute spécialité_
 
 ---------------------------
+
+
+!! *BEYOND* (to contribute)
+!!
+
+!! *CULTURAL POINT* (contributor)
+!!
+
+! *YOUR  CHALLENGE*  :  look at the picture, and think of the right answers to the following questions
+!
+! _Do not look at the answer, take time to think, a few days if necessary. The time to build your mental representation of the phenomenon, to formulate it in words is important, a thousand times more important than the ephemeral instant where you read the fews words of the solution._
+!
+! <details markdown=1>
+! <summary>
+! INDICE "key word"
+! </summary>
+! diffusion
+! </details>
+! <details markdown=1>
+! <summary>
+! ANSWER
+! </summary>
+! diffusion
+! </details>
+
+
+
+!!!! *DIFFICULT POINT* (contribute, or indicate a difficult point of understanding)
+!!!!
+
+!!! *DO YOU MASTER ?*
+!!! <details markdown=1>
+!!! <summary>
+!!! Describe the test.
+!!! </summary>
+!!! Texte du test (et ses images, figures, audio, video, etc ...)<br>
+!!! [a figure for the test]<br>
+!!! Texte de la question
+!!! <details markdown=2>
+!!! <summary>
+!!! Choix de réponse 1
+!!! </summary>
+!!! Texte si la réponse 1 est choisie<br><br>
+!!! </details markdown=2>
+!!! <details markdown=3>
+!!! <summary>
+!!! Choix de réponse 2
+!!! </summary>
+!!! Texte si la réponse 2 est choisie<br><br>
+!!! </details markdown=3>
+!!! </details markdown=1>
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