diff --git a/doc/tutorial/common-headers.tex b/doc/tutorial/common-headers.tex
index 5bf21fbcd981a6bd1d1805135fe7360042b223b0..8881fed6e27d6dce89802a095f6f9662122e01b5 100644
--- a/doc/tutorial/common-headers.tex
+++ b/doc/tutorial/common-headers.tex
@@ -9,7 +9,7 @@
 \usepackage{hyperref}
 \newlength\myleftmargin
 \setlength{\myleftmargin}{2cm}
-\usepackage[margin=3.2cm, top=2cm, bottom=2cm,left=\myleftmargin,a4paper]{geometry}
+\usepackage[margin=3.5cm, top=2cm, bottom=2cm,left=\myleftmargin,a4paper]{geometry}
 \usepackage{graphicx}
 \usepackage{caption}
 \usepackage{array}
@@ -46,7 +46,7 @@
 \end{minipage}
 \hfill
 \begin{minipage}[c]{.2\textwidth}
-\includegraphics[width=\textwidth]{grid-0}
+%\includegraphics[width=\textwidth]{grid-0}
 \end{minipage}
 }
 \makeatother
diff --git a/doc/tutorial/mastering-vidjil.tex b/doc/tutorial/mastering-vidjil.tex
index 450368cb8992380b846e5e1709d47d5c7cfc8537..8a28f55da356d065c026f22a515f37246c80058a 100644
--- a/doc/tutorial/mastering-vidjil.tex
+++ b/doc/tutorial/mastering-vidjil.tex
@@ -1,10 +1,13 @@
-\documentclass[10pt]{article}
+\documentclass[11pt]{article}
 \usepackage[english]{babel}
 \input{common-headers}
 
-\title{Mastering the Vidjil web application:\\ Browsing and analysing clones
+\title{Mastering the Vidjil web application \\[1ex] Day 1 -- Browsing and analysing clones
 }
 
+\widowpenalty10000
+\clubpenalty10000
+
 \begin{document}
 
 \maketitle
@@ -18,6 +21,12 @@ or by any other algorithm.}
 
 \bigskip
 
+
+\centerline{\includegraphics[width=.8\textwidth]{../../../vdj/vdj/doc/com/screenshots/vidjil-11-TRG-combined.png}}
+
+\bigskip
+
+
 \question{Connect to the public server (\url{https://app.vidjil.org}), either with your account
 or the demo account (\texttt{demo@vidjil.org} / \texttt{demo}),
 select the \textit{Demo LIL-L3 (tutorial)} patient, and click on the bottom right link, \com{see results: multi-inc-xxx}.
@@ -38,35 +47,9 @@ In the following sections, we focus on the diagnosis sample.
 % how to view and filter clones and
 The section~\ref{sec:tracking} will deal with the comparison of several samples. 
 
-\section{Assessing the quality of the run and of the analysis}
-The Vidjil web application allows to run several ``RepSeq'' (immune repertoire analysis) algorithms.
-Each RepSeq algorithm has its own definition of what a clone is (or, more precisely
-a clonotype), how to output its sequence and how to assign a V(D)J designation.
-The number of analyzed reads will depend on the algorithm used.
-This sample has been processed using the Vidjil algorithm.
-
-
-\marginpar{The percentage of analyzed reads can range from .01\,\% (for
-  RNA-Seq or capture data) to 98-99\,\% (for very high-quality runs mostly on
-  Illumina).}
-\question{How many reads have been analyzed in the current sample with the embedded algorithm ?}
-
-Now we will try to assess the reason why some reads were not analyzed in our
-sample.
-This might reflect a problem during the sequencing protocol\dots or that could
-be normal.
-For that sake you will need to display the information box by clicking on the
-\textit{i} in the upper left part.
-\question{What are the average read lengths on IGH? and on TRG?}
-The lines starting with \texttt{UNSEG} display the reasons why some reads have
-not been analyzed.
-
-You can see what those reasons mean in the online documentation of the
-algorithm: \href{http://www.vidjil.org/doc/vidjil-algo\#unsegmentation-causes}{vidjil.org/doc/vidjil-algo\#unsegmentation-causes
-}
-\question{What are the major causes explaining the reads have not been
-  analyzed? Also have a look at the average read lengths of these causes. Do
-  you notice something regarding the average read lengths?}
+
+\input{tutorial-quality}
+
 
 \input{tutorial-clones}
 
@@ -76,13 +59,14 @@ algorithm: \href{http://www.vidjil.org/doc/vidjil-algo\#unsegmentation-causes}{v
 
 \centerline{\includegraphics[width=.5\textwidth]{./grid-1}}
 
+\end{document}
 \newpage
 
 
+\input{tutorial-server}
 \input{tutorial-several-samples}
 \input{tutorial-export}
 
-\input{tutorial-server}
 
 \vfill
 \flushright \it Aurélien Béliard, Aurélie Caillault, Mathieu Giraud, Tatiana Rocher, Mikaël Salson, Florian Thonier
diff --git a/doc/tutorial/tutorial-quality.tex b/doc/tutorial/tutorial-quality.tex
index 6d6c377be2db1401d2ab69f77179aa519397a826..cd3d4b6696eacebdde34867e507e20bbc4949a7a 100644
--- a/doc/tutorial/tutorial-quality.tex
+++ b/doc/tutorial/tutorial-quality.tex
@@ -23,8 +23,11 @@ The lines starting with \texttt{UNSEG} display the reasons why some reads have
 not been analyzed.
 
 You can see what those reasons mean in the online documentation of the
-algorithm: \href{http://www.vidjil.org/doc/vidjil-algo\#unsegmentation-causes}{vidjil.org/doc/vidjil-algo\#unsegmentation-causes
-}
+algorithm:
+
+ \centerline{\href{http://www.vidjil.org/doc/vidjil-algo\#unsegmentation-causes}{vidjil.org/doc/vidjil-algo\#unsegmentation-causes
+}}
+
 \question{What are the major causes explaining the reads have not been
   analyzed? Also have a look at the average read lengths of these causes. Do
   you notice something regarding the average read lengths?}