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diff --git a/20.classical-collisions/10.main/textbook.en.md b/20.classical-collisions/10.main/textbook.en.md
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----
-title: enumeration
-published: true
-routable: true
-viible: true
----
-
-Chocs : main EN
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diff --git a/20.classical-collisions/10.main/textbook.es.md b/20.classical-collisions/10.main/textbook.es.md
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----
-title: enumeration
-published: true
-routable: true
-viible: true
----
-
-##### Choques : parte principal, ES, nivel 1
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----
-title: enumeration
-published: true
-routable: true
-viible: true
----
-
-Chocs : main FR
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----
-title: chocks
-published: true
-routable: true
-viible: true
----
-
-Chocs : overview EN
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----
-title: collisions
-published: true
-routable: true
-viible: true
----
-
-
-##### Choques : parte síntesis, ES, nivel 1
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-title: classical chocks
-published: true
-routable: true
-visible: true
----
-
-- Chocs overview FR
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diff --git a/20.classical-collisions/30.beyond/annex.en.md b/20.classical-collisions/30.beyond/annex.en.md
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-title: chocks
-published: true
-routable: true
-viible: true
----
-
-Chocs : annex EN
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----
-title: chocks
-published: true
-routable: true
-viible: true
----
-
-##### Choques : parte ir más allá, ES, nivel 1
diff --git a/20.classical-collisions/30.beyond/annex.fr.md b/20.classical-collisions/30.beyond/annex.fr.md
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----
-title: chocks
-published: true
-routable: true
-viible: true
----
-
-Chocs : annex FR
\ No newline at end of file