From 398d4f09d8edc43da3d6e93283af59eee85d8fdb Mon Sep 17 00:00:00 2001
From: Claude Meny <claude.meny@irap.omp.eu>
Date: Fri, 29 Jan 2021 14:09:32 +0100
Subject: [PATCH] Update textbook.en.md

---
 .../30.cylindrical-coordinates/10.main/textbook.en.md       | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.en.md b/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.en.md
index fc048fcd7..5cfc82c50 100644
--- a/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.en.md
+++ b/12.temporary_ins/05.coordinates-systems/30.cylindrical-coordinates/10.main/textbook.en.md
@@ -8,9 +8,13 @@ lessons:
       order:
     - slug: cylindrical-coordinates-linear
       order: 1
+---
+
+<!--
     - slug: es-en-cylindrical-coordinates-exchange
       order: 3
----
+-->
+
 <!--caligraphie de l'intégrale double curviligne-->
 $`\def\oiint{\displaystyle\mathop{{\iint}\mkern-18mu \scriptsize \bigcirc}}`$
 $`\def\Ltau{\Large{\tau}\normalsize}`$