diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/30.beyond/annex.fr.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/30.beyond/annex.fr.md
index e8b9bd73c..b53d46f8c 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/30.beyond/annex.fr.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/instructions-for-levels/30.beyond/annex.fr.md
@@ -152,8 +152,8 @@ Sont proposées les catégories suivantes, mais à débattre, toutes les idées
! For each image of the painting, can you identify the optical system, then specify `
! the characteristics of the various simple elements that constitute the system and their relative distances?
!
-!* _The resolution time is the typical expected time to be allocated to this problem if it was part of an examen for an optics certificate._
-!* _The discovery time is the expected time required to prepare this challenge if you don't have practice. But take as much time as you need._
+! * _The resolution time is the typical expected time to be allocated to this problem if it was part of an examen for an optics certificate._
+! * _The discovery time is the expected time required to prepare this challenge if you don't have practice. But take as much time as you need._
!
! <\details>
!
@@ -171,7 +171,6 @@ Sont proposées les catégories suivantes, mais à débattre, toutes les idées
!
! What is the optical system giving the image of the painting?
!
-!
! * The optical system is composed of two spherical refracting surfaces, centered on the same optical axis.
!
!
@@ -179,14 +178,11 @@ Sont proposées les catégories suivantes, mais à débattre, toutes les idées
! How do you characterize each of the single optical elements that make up this optical system,
! and their relative distances?
!
-!
! * The optical axis is oriented positively in the direction of light propagation
! (from the painting towards the lensball).
-!
! * The first spherical refracting surface $`DS1`$ encountered by the light has
! the follwing characteristics :
! $`\overline{S_1C_1}=+|R|=+5\;cm`$ , $`n_{ini}=1`$ and $`n_{fin}=1.5`$
-!
! * The second spherical refracting surface $DS2$ encountered by the light has the follwing characteristics :
! $`\overline{S_2C_2}=-|R|=-5\;cm`$ , $`n_{ini}=1.5`$ and $`n_{fin}=1`$
!