diff --git a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/10.n1/10.brainstorming/textbook.en.md b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/10.n1/10.brainstorming/textbook.en.md
index 2d3f3bafb..dea99869a 100644
--- a/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/10.n1/10.brainstorming/textbook.en.md
+++ b/00.brainstorming-pedagogical-teams/45.synthesis-structuring/30.classical-mechanics/10.n1/10.brainstorming/textbook.en.md
@@ -34,32 +34,31 @@ https://m3p2.com/polyglot/brainstorming-pedagogical-teams/synthesis-structuring/
 
 A first study plan proposal : 
 
-*MECA-CLAS-Prop1-n1*    
+*BRST-MEC-CLAS1-1* (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 :_ 
+Block-1 - _Possible title :_   
           _Short description :_      
           _Program elements, or structure in chapters :_   
           _¿For whom? :_ Anyone who reaches this level 1.
          
          
-Block-2 - _Possible title :_  
+Block-2 - _Possible title :_   
          _Short description :_      
          _Program elements, or structure in chapters :_   
          _¿For whom? :_ _ Anyone who reaches this level 1.
          
          
-Block-3 - _Possible title :_ 
+Block-3 - _Possible title :_   
          _Short description :_      
          _Program elements, or structure in chapters :_   
          _¿For whom? :_ Anyone who reaches this level 1.
 
          
-Block-4 - _Possible title :_ ? 
+Block-4 - _Possible title :_ ?   
          _Short description :_      
          _Program elements, or structure in chapters :_   
          _¿For whom? :_ Anyone who reaches this level 1.
@@ -72,19 +71,18 @@ To carry on
 
 New proposal for a study plan    
 
-*MECA-CLAS-Prop2-n1*  
-
-_Start with your 3 initials followed by the two letters of your native language (XXX-YY)  :_    
+*BRST-MEC-CLAS1-2* (XXX-YY)  proposal for a study plan 2 
 
-(XXX-YY)
+_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) :_  
          
-Block-1 - _Possible title :_ 
+Block-1 - _Possible title :_    
          _Short description :_      
          _Program elements, or structure in chapters :_   
          _¿For whom? :_ 
          
          
-Block-2 - _Possible title :_ 
+Block-2 - _Possible title :_    
          _Short description :_      
          _Program elements, or structure in chapters :_   
          _¿For whom? :_ 
@@ -96,10 +94,8 @@ To carry on
 
 New proposal for a study plan    
 
-*MECA-CLAS-Prop3-n1*  
+*BRST-MEC-CLAS1-3* (XXX-YY)  proposal for a study plan 3 
 
-Continuar 
-Continuer 
 To carry on