diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md
index 6d16c730a..e94b1276a 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/20.n2/10.brainstorming/textbook.en.md
@@ -25,13 +25,12 @@ https://m3p2.com/polyglot/brainstorming-pedagogical-teams/synthesis-structuring/
 
 A first study plan proposal : 
 
-*MECA-CLAS-Prop1-n2*    
+*BRST-MEC-CLAS2-1* (CLM-FR)  proposal for a study plan 1
 
 _React (iscuss, improve) to this proposal, in the text or afterwards,_    
 _starting with 3 initials followed by the two letters of your native language(XXX-YY) :_  
-
-(CME-FR)   
          
+
 Block-1 - _Possible title :_ Euclidean geometry  
           _Short description :_      
           _Program elements, or structure in chapters :_   
@@ -63,12 +62,12 @@ To carry on
 
 New proposal for a study plan    
 
-*MECA-CLAS-Prop2-n2*  
+*BRST-MEC-CLAS2-2* (XXX-YY)  proposal for a study plan 2
+
+_React (iscuss, improve) to this proposal, in the text or afterwards,_    
+_starting with 3 initials followed by the two letters of your native language(XXX-YY) :_  
 
-_Start with your 3 initials followed by the two letters of your native language (XXX-YY)  :_    
 
-(XXX-YY)
-         
 Block-1 - _Possible title :_ 
          _Short description :_      
          _Program elements, or structure in chapters :_   
@@ -87,10 +86,9 @@ To carry on
 
 New proposal for a study plan    
 
-*MECA-CLAS-Prop3-n2*  
+*BRST-MEC-CLAS2-3* (XXX-YY)  proposal for a study plan 3
+         
 
-Continuar 
-Continuer 
 To carry on