diff --git a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/10.main/textbook.fr.md b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/10.main/textbook.fr.md
index d73f8f614..cd45dccea 100644
--- a/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/10.main/textbook.fr.md
+++ b/00.brainstorming-pedagogical-teams/40.collection-existing-pedagogical-content/40.classical-mechanics/10.main/textbook.fr.md
@@ -188,13 +188,18 @@ pensez à remplacer (auto-tra) par vos initiales (YYY).
 
 #### Cinematics
 
+... / ...
+
 
 #### Dynamics
 
+... / ...
 
+--------------------------------------------------------------------------------
 
+#### Momento de una fuerza / Moment d'une force / ?? :
 
-#### Momento de una fuerza / Moment d'une force / ??
+--------------------------------------------------------------------------------
 
 *CLAPTMEC-CI-xxx* 
 
@@ -208,14 +213,15 @@ Situación: Abrir una puerta
 La fuerza F tiende a producir rotación alrededor de un eje
 perpendicular al plano formado por r y F.
 
-[ES] (UN..LF) $`\overrightarrow{\tau} = \overrightarrow{r\times\overrightarrow{F}`$
+[ES] (UN..LF) $`\overrightarrow{\tau} = \overrightarrow{r}\times\overrightarrow{F}`$
 
-[ES] (CME) $`\overrightarrow{M^t} = \overrightarrow{r\land\overrightarrow{F}`$
+[ES] (CME) $`\overrightarrow{M^t} = \overrightarrow{r}\land\overrightarrow{F}`$
 
 --------------------------------------------------------------------------------
 
+##### El momento angular / Le moment angulaire / The angular momentum :
 
-##### El momento angular / Le moment angulaire / The angular momentum
+--------------------------------------------------------------------------------
 
 *CLAPTMEC-CI-xxx*