diff --git a/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/frontmatter.yaml b/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/frontmatter.yaml
new file mode 100755
index 000000000..c74f31816
--- /dev/null
+++ b/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/frontmatter.yaml
@@ -0,0 +1,9 @@
+# This page configuration is shared by all locales, in this directory.
+# You can override it in the individual frontmatter of the pages.
+
+content:
+    # https://learn.getgrav.org/15/content/collections#summary-of-collection-options
+    items: @self.children
+
+anchors:
+    active: false
\ No newline at end of file
diff --git a/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/lesson-columns.fr.md b/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/topic.fr.md
similarity index 100%
rename from 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/lesson-columns.fr.md
rename to 01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/01.geometrical-optics-general/02.geometrical-optics-validity/topic.fr.md
diff --git a/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/frontmatter.yaml b/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/frontmatter.yaml
new file mode 100644
index 000000000..c74f31816
--- /dev/null
+++ b/01.curriculum/01.physics-chemistry-biology/03.niv3/02.geometrical-optics/frontmatter.yaml
@@ -0,0 +1,9 @@
+# This page configuration is shared by all locales, in this directory.
+# You can override it in the individual frontmatter of the pages.
+
+content:
+    # https://learn.getgrav.org/15/content/collections#summary-of-collection-options
+    items: @self.children
+
+anchors:
+    active: false
\ No newline at end of file