From 3ec72ab75355f653c6f3c1d0e3a4dd55c5830975 Mon Sep 17 00:00:00 2001
From: Claude Meny <claude.meny@irap.omp.eu>
Date: Tue, 8 Sep 2020 18:01:15 +0200
Subject: [PATCH] Update textbook.en.md

---
 .../02.Niv2/04.optics/02.optical-phenomena/textbook.en.md       | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/02.optical-phenomena/textbook.en.md b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/02.optical-phenomena/textbook.en.md
index ef2b920ac..d987d249d 100644
--- a/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/02.optical-phenomena/textbook.en.md
+++ b/01.curriculum/01.physics-chemistry-biology/02.Niv2/04.optics/02.optical-phenomena/textbook.en.md
@@ -1,4 +1,6 @@
 ---
 title: 'Optical phenomena'
+published: false
+visible: false
 ---