diff --git a/doc/users/Tuto1/img/frictions.png b/doc/users/Tuto1/img/frictions.png
index e5fd5299..959e3629 100644
Binary files a/doc/users/Tuto1/img/frictions.png and b/doc/users/Tuto1/img/frictions.png differ
diff --git a/doc/users/Tuto1/img/hs.png b/doc/users/Tuto1/img/hs.png
index f095ee4b..090ccb74 100644
Binary files a/doc/users/Tuto1/img/hs.png and b/doc/users/Tuto1/img/hs.png differ