diff --git a/jl-cours/environments.tex b/jl-cours/environments.tex
new file mode 100644
index 0000000..02feb17
--- /dev/null
+++ b/jl-cours/environments.tex
@@ -0,0 +1,316 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% ENVIRONMENTS
+%
+%
+
+% definition
+\NewDocumentEnvironment{definition}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: with logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@def1}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@def1}[#2]
+        \noindent
+    }
+  }{
+    % if not starred: without logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@def2}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@def2}[#2]
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@def1}
+  }{
+    \end{@def2}
+  }
+}
+
+% theoreme
+\NewDocumentEnvironment{theoreme}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: with logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@thm1}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@thm1}[#2]
+        \noindent
+    }
+  }{
+    % if not starred: without logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@thm2}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@thm2}[#2]
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@thm1}
+  }{
+    \end{@thm2}
+  }
+}
+
+% propriete
+\NewDocumentEnvironment{propriete}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: with logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@ppt1}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@ppt1}[#2]
+        \noindent
+    }
+  }{
+    % if not starred: without logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@ppt2}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@ppt2}[#2]
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@ppt1}
+  }{
+    \end{@ppt2}
+  }
+}
+
+% demonstration
+\NewDocumentEnvironment{demonstration}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: with logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@dem1}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@dem1}[#2]
+        \noindent
+    }
+  }{
+    % if not starred: without logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@dem2}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@dem2}[#2]
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@dem1}
+  }{
+    \end{@dem2}
+  }
+}
+
+% vocabulaire
+\NewDocumentEnvironment{vocabulaire}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: with logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@voc1}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@voc1}[#2]
+        \noindent
+    }
+  }{
+    % if not starred: without logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@voc2}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@voc2}[#2]
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@voc1}
+  }{
+    \end{@voc2}
+  }
+}
+
+% citation
+\NewDocumentEnvironment{commentaire}{ o }{
+    \IfNoValueTF {#1} {
+      % if no subtitle
+      \begin{@com}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@com}[#1]
+        \noindent
+    }
+}{
+\end{@com}
+}
+
+% remarque
+\NewDocumentEnvironment{remarque}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: without title
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@rmq2}
+        % \vspace{-.3cm}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@rmq2}[#2]
+        % \vspace{-.3cm}
+        \noindent
+    }
+  }{
+    % if not starred: with title
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@rmq1}
+        \vspace{-.5cm}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@rmq1}[#2]
+        \vspace{-.5cm}
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@rmq2}
+  }{
+    \end{@rmq1}
+  }
+}
+
+% exemple
+\NewDocumentEnvironment{exemple}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: without title
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@exe2}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@exe2}[#2]
+        \noindent
+    }
+  }{
+    % if not starred: with title
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@exe1}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@exe1}[#2]
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@exe2}
+  }{
+    \end{@exe1}
+  }
+}
+
+% application
+\NewDocumentEnvironment{application}{ o }{
+    \IfNoValueTF {#1} {
+      % if no subtitle
+      \begin{@app}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@app}[#1]
+        \noindent
+    }
+}{
+\end{@app}
+}
+
+% methode
+\NewDocumentEnvironment{methode}{ s o }{
+  \IfBooleanTF {#1} {
+    % if starred: with logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@met1}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@met1}[#2]
+        \noindent
+    }
+  }{
+    % if not starred: without logo
+    \IfNoValueTF {#2} {
+      % if no subtitle
+      \begin{@met2}
+        \noindent
+    }{
+      % if subtitle
+      \begin{@met2}[#2]
+        \noindent
+    }
+  }
+}{
+  \IfBooleanTF {#1} {
+    \end{@met1}
+  }{
+    \end{@met2}
+  }
+}
+
+% rappel
+\NewDocumentEnvironment{rappel}{ o }{
+  \IfNoValueTF {#1} {
+    \begin{bclogo}[logo=\bclivre, noborder=true]{Rappel}
+  }{
+    \begin{bclogo}[logo=\bclivre, noborder=true]{#1}
+  }
+}{
+  \end{bclogo}
+}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/jl-cours/fixes.tex b/jl-cours/fixes.tex
new file mode 100644
index 0000000..3743601
--- /dev/null
+++ b/jl-cours/fixes.tex
@@ -0,0 +1,118 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% FIXES
+%
+%
+
+
+%% Fix error from KOMA-Script scrartcl class.
+%%
+\DeclareOldFontCommand{\rm}{\normalfont\rmfamily}{\mathrm}
+
+
+%% Fix for mdframed package see :
+%% http://tex.stackexchange.com/questions/179790/mdframed-how-to-change-the-separator-between-the-label-and-the-title-of-a-non-n#179794
+%%
+\DeclareDocumentCommand{\mdtheorem}{ O{} m o m o }%
+ {\ifcsdef{#2}%
+   {\mdf@PackageWarning{Environment #2 already exits\MessageBreak}}%
+   {%
+    \IfNoValueTF {#3}%
+     {%#3 not given -- number relationship
+      \IfNoValueTF {#5}%
+        {%#3+#5 not given
+        \@definecounter{#2}%
+        \expandafter\xdef\csname the#2\endcsname{\@thmcounter{#2}}%
+        \newenvironment{#2}[1][]{%
+          \refstepcounter{#2}%
+          \ifstrempty{##1}%
+            {\let\@temptitle\relax}%
+            {%
+             \def\@temptitle{\mdf@theoremseparator%
+                             \mdf@theoremspace%
+                             \mdf@theoremtitlefont%
+                             ##1}%
+             \mdf@thm@caption{#2}{{#4}{\csname the#2\endcsname}{##1}}%
+             }%
+          \begin{mdframed}[#1,frametitle={\strut#4\ \csname the#2\endcsname%
+                                          \@temptitle}]}%
+          {\end{mdframed}}%
+        \newenvironment{#2*}[1][]{%
+          \ifstrempty{##1}{\let\@temptitle\relax}{\def\@temptitle{\mdf@theoremseparator\ ##1}}% <- the problem was here
+          \begin{mdframed}[#1,frametitle={\strut#4\@temptitle}]}%
+          {\end{mdframed}}%
+        }%
+        {%#5 given -- reset counter
+        \@definecounter{#2}\@newctr{#2}[#5]%
+        \expandafter\xdef\csname the#2\endcsname{\@thmcounter{#2}}%
+        \expandafter\xdef\csname the#2\endcsname{%
+               \expandafter\noexpand\csname the#5\endcsname \@thmcountersep%
+                  \@thmcounter{#2}}%
+        \newenvironment{#2}[1][]{%
+          \refstepcounter{#2}%
+          \ifstrempty{##1}%
+            {\let\@temptitle\relax}%
+            {%
+             \def\@temptitle{\mdf@theoremseparator%
+                             \mdf@theoremspace%
+                             \mdf@theoremtitlefont%
+                             ##1}%
+             \mdf@thm@caption{#2}{{#4}{\csname the#2\endcsname}{##1}}%
+             }
+          \begin{mdframed}[#1,frametitle={\strut#4\ \csname the#2\endcsname%
+                                          \@temptitle}]}%
+          {\end{mdframed}}%
+        \newenvironment{#2*}[1][]{%
+          \ifstrempty{##1}%
+            {\let\@temptitle\relax}%
+            {%
+             \def\@temptitle{\mdf@theoremseparator%
+                             \mdf@theoremspace%
+                             \mdf@theoremtitlefont%
+                             ##1}%
+             \mdf@thm@caption{#2}{{#4}{\csname the#2\endcsname}{##1}}%
+             }%
+          \begin{mdframed}[#1,frametitle={\strut#4\@temptitle}]}%
+          {\end{mdframed}}%
+        }%
+     }%
+     {%#3 given -- number relationship
+        \global\@namedef{the#2}{\@nameuse{the#3}}%
+        \newenvironment{#2}[1][]{%
+          \refstepcounter{#3}%
+          \ifstrempty{##1}%
+            {\let\@temptitle\relax}%
+            {%
+             \def\@temptitle{\mdf@theoremseparator%
+                             \mdf@theoremspace%
+                             \mdf@theoremtitlefont%
+                             ##1}%
+             \mdf@thm@caption{#2}{{#4}{\csname the#2\endcsname}{##1}}%
+             }
+          \begin{mdframed}[#1,frametitle={\strut#4\ \csname the#2\endcsname%
+                                          \@temptitle}]}%
+          {\end{mdframed}}%
+        \newenvironment{#2*}[1][]{%
+          \ifstrempty{##1}{\let\@temptitle\relax}{\def\@temptitle{:\ ##1}}%
+          \begin{mdframed}[#1,frametitle={\strut#4\@temptitle}]}%
+          {\end{mdframed}}%
+     }%
+   }%
+ }
+
+
+ %% From chingatome.fr
+ %% to allow some code to be compiled and avoid me to recode some macros
+ %%
+\newbox\dboite%
+\newbox\gboite%
+\newcommand{\centredeuxlignes}[3][t]{\if t#1\normalbaselineskip=0pt\normallineskip=2pt\normallineskiplimit=10pt\else\normalbaselineskip=0pt\normallineskip=#1pt\normallineskiplimit=10pt\fi%
+  \setbox\gboite\hbox{#2}%
+  \setbox\dboite\hbox{#3}%
+  \ifdim\wd\gboite<\wd\dboite%
+  $\vcenter{\normalbaselines\hbox to\wd\dboite{\null\hfill#2\hfill\null}\hbox{\null\hfill#3\hfill\null}}$%
+  \else%
+  \hbox{$\vcenter{\normalbaselines\hbox{\null\hfill#2\hfill\null}\hbox to \wd\gboite{\null\hfill#3\hfill\null}}$}%
+\fi}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/jl-cours/jl-cours.cls b/jl-cours/jl-cours.cls
new file mode 100644
index 0000000..f2cfc76
--- /dev/null
+++ b/jl-cours/jl-cours.cls
@@ -0,0 +1,267 @@
+%%%
+%%%
+%%% Classe : jl-cours.cls
+%%% Version : 1.0
+%%% Date : 09/11/16
+%%% Auteur : Jeff LANCE
+%%%
+%%% Notes de versions
+%%% 25/11/18: version 2.0
+%%%           renommage de la classe et constitution en package.
+%%%
+
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesClass{jl-cours}[2016/11/09 Document de cours en A4, V2.0]
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% INIT
+%
+%
+
+\LoadClassWithOptions{scrartcl}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% PACKAGES
+%
+%
+
+%% Others
+%%
+\RequirePackage{xkeyval}
+
+%% Own packages. Those contains some global settings and definitions.
+%%
+\RequirePackage{commun}
+\RequirePackage{couleurs}
+\RequirePackage{shortcuts}
+
+%% Output
+%%
+\RequirePackage{comment}
+
+%% Layout
+%%
+\RequirePackage{geometry}
+\RequirePackage[footsepline, plainfootsepline]{scrlayer-scrpage}
+\RequirePackage{titling}
+\RequirePackage{titlesec}
+\RequirePackage{pageslts}
+\RequirePackage{enumitem}
+\RequirePackage[]{hyperref}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+\makeatletter
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% OPTIONS
+%
+%
+
+\DeclareOptionX{type}[cours]{%
+  \def\type{#1}%
+}
+
+\ExecuteOptions{a4paper, DIV=24}
+\ExecuteOptionsX{type}
+\ProcessOptionsX
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% FIXES
+%
+%
+
+\input{fixes.tex}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% SETTINGS
+%
+%
+
+%% metapost
+%%
+\ifpdf
+  \DeclareGraphicsRule{*}{mps}{*}{}
+\fi
+
+%% tkz
+%%
+\usetkzobj{all} % on charge tous les objets
+
+%% sizing of the page
+%%
+\geometry{a4paper, includeheadfoot, hmargin=.7cm, vmargin=.5cm, head=14.5pt}
+
+%% title, header and footer
+%% KOMA-Script version (preferred)
+%%
+\ohead{}
+
+\ifthenelse{ \equal{\type}{activity} }{
+	\IfNoValueTF{ \subtitle }{
+		\cohead[\@title]{\@title}
+		\rohead[Activité]{Activité}
+	}{
+		\cohead[\@title]{\@title}
+		\rohead[Activité]{Activité - \@subtitle}
+	}
+
+}{
+	\ifthenelse{ \equal{\type}{exercise} }{
+		\cohead[\@title]{\@title}
+		\rohead[Exercices]{Exercices}
+	}{
+		\rohead[Cours]{Cours - \@title}
+	}
+}
+
+\cofoot*{\thepage\ /\ \pageref{LastPage}}
+\pagestyle{scrheadings}
+\setkomafont{pagehead}{\normalfont\bfseries}
+\setkomafont{pagefoot}{\normalfont}
+
+%% sections
+%%
+\titleformat{\section}[block]
+            {\sffamily\bfseries\Large}
+            {\thesection.}{.5em}{}[]
+\titleformat{\subsection}[block]
+            {\sffamily\bfseries\large\hspace{2em}}
+            {\thesubsection)}{.5em}{}[]
+\titleformat{\subsubsection}[block]
+            {\sffamily\bfseries\large\hspace{2em}}
+            {\circled{\thesubsubsection}}{.5em}{}[]
+\renewcommand \thesection{\Roman{section}}
+\renewcommand \thesubsection{\arabic{subsection}}
+\renewcommand \thesubsubsection{\alph{subsubsection}}
+
+%% paths
+%%
+\graphicspath{{images/}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% MDFRAMED
+%
+%
+
+\input{mdframed.tex}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% MDTHEOREM
+%
+%
+
+\input{mdtheorem.tex}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% ENVIRONMENTS
+%
+%
+
+\input{environments.tex}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% COMMANDS
+%
+%
+
+%% titre
+%%
+\NewDocumentCommand \titre { G{Titre} G{Sous-titre} }{%
+  \setlength{\droptitle}{-2cm}
+	\title{#1}
+  \subtitle{#2}
+	\date{}
+	\maketitle
+}
+
+%% \partie | \sspartie
+%% Define a (sub)section title.
+%%
+\newcounter{partiecounter}
+\newcounter{sspartiecounter}
+\newcounter{ssspartiecounter}
+%
+\NewDocumentCommand \partie { G{Partie} } {%
+    \def\cType{\Roman}
+    \stepcounter{partiecounter}
+    \setcounter{sspartiecounter}{0}
+    \section{#1}
+}
+%
+\NewDocumentCommand \sspartie { G{Sous-Partie} } {%
+    \def\cType{\arabic}
+    \stepcounter{sspartiecounter}
+    \subsection{#1}
+}
+%
+\NewDocumentCommand \ssspartie { G{Sous-sous-Partie} } {%
+  \def\cType{\alph}
+  \stepcounter{ssspartiecounter}
+  \subsubsection{#1}
+}
+
+%% new lists definitions
+%%
+\newlist{questions}{enumerate}{2}
+\setlist[questions]{labelindent=0em, leftmargin=*, labelsep=0.5em}
+\setlist[questions, 1]{label=\textbf{\arabic*.}}
+\setlist[questions, 2]{label=\textbf{\alph*)}}
+%
+\newlist{questionsl}{enumerate*}{1}
+\setlist*[questionsl]{label=\textbf{\alph*)}}
+%
+\setlist[enumerate, 1]{label=\textbf{\arabic*.}, leftmargin=*, labelsep=.5em}
+\setlist[enumerate, 2]{label=\textbf{\alph*)}}
+%
+\setlist[description]{font=\sffamily\bfseries}
+% \NewTasks[counter-format={tsk[1].},label-format={\bfseries}]{questions}[*]
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+
+
+\makeatother
diff --git a/jl-cours/mdframed.tex b/jl-cours/mdframed.tex
new file mode 100644
index 0000000..ccd73c0
--- /dev/null
+++ b/jl-cours/mdframed.tex
@@ -0,0 +1,240 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% MDFRAMED
+%
+%
+
+
+%% global options
+%%
+\mdfsetup{
+    frametitlealignment=\raggedright,%
+    innerbottommargin=2em,%
+}
+
+%% styles
+%%
+\tikzset{
+    symbol/.style={
+        rectangle, draw=white,
+        fill=white, scale=1,
+        overlay
+    }
+}
+
+% nologo: a standard square frame with thick border and without a logo
+\mdfdefinestyle{nologo}{%
+  linecolor=black,linewidth=1pt,%
+  leftmargin=0,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=.5em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=true,%
+  xcolor,%
+}
+% noborder: a no border frame
+\mdfdefinestyle{noborder}{%
+  linecolor=white,linewidth=0pt,%
+  leftmargin=0,rightmargin=0,%
+  innertopmargin=.5em,innerbottommargin=.5em,%
+  innerleftmargin=.5em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  xcolor,%
+}
+% pencil: a square frame with a pencil icon in upper left corner
+\mdfdefinestyle{pencil}{%
+  linecolor=black,linewidth=1pt,%
+  leftmargin=0,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=1em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=true,%
+  xcolor,%
+  firstextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faPencil };
+             },%
+  secondextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faPencil };
+              },%
+  middleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faPencil };
+              },%
+  singleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faPencil };
+              },%
+}
+% eye: square frame with an eye logo
+\mdfdefinestyle{eye}{%
+  linecolor=white,linewidth=1pt,%
+  tikzsetting={draw=black,line width=.5pt},%
+  leftmargin=2pt,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=.5em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=false,%
+  xcolor,%
+  hidealllines=true, leftline=true,%
+  firstextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faEye };
+  },%
+  secondextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faEye };
+  },%
+  middleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faEye };
+  },%
+  singleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faEye };
+  },%
+}
+% comment: frame with no borders but with a beginning quote at upper left and
+%          an ending quote at lower right
+\mdfdefinestyle{comment}{%
+  linecolor=white,linewidth=1pt,%
+  leftmargin=0,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=1em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=true,%
+  xcolor,%
+  firstextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faQuoteLeft };
+              \path let \p1=(P), \p2=(O) in ($(\x1,.4)+(0,\y2)$)
+              node[symbol] { \faQuoteRight };
+             },%
+  secondextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faQuoteLeft };
+               \path let \p1=(P), \p2=(O) in ($(\x1,.4)+(0,\y2)$)
+               node[symbol] { \faQuoteRight };
+              },%
+  middleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faQuoteLeft };
+               \path let \p1=(P), \p2=(O) in ($(\x1,.4)+(0,\y2)$)
+               node[symbol] { \faQuoteRight };
+              },%
+  singleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faQuoteLeft };
+               \path let \p1=(P), \p2=(O) in ($(\x1,.4)+(0,\y2)$)
+               node[symbol] { \faQuoteRight };
+              },%
+}
+% cogs: a shadowed square frame with a file text icon at upper left
+\mdfdefinestyle{cogs}{%
+  linecolor=white,linewidth=1pt,%
+  tikzsetting={draw=black,line width=1pt},%
+  leftmargin=0,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=1em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=true,%
+  xcolor,%
+  shadow=true,%
+  firstextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faCogs };
+             },%
+  secondextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faCogs };
+              },%
+  middleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faCogs };
+              },%
+  singleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faCogs };
+              },%
+}
+% tips: a shadowed square frame with a light bulb icon at upper left
+\mdfdefinestyle{tips}{%
+  linecolor=white,linewidth=1pt,%
+  tikzsetting={draw=black,line width=1pt},%
+  leftmargin=0,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=1em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=true,%
+  xcolor,%
+  hidealllines=true, leftline=true,%
+  firstextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faLightbulbO };
+             },%
+  secondextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faLightbulbO };
+              },%
+  middleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faLightbulbO };
+              },%
+  singleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faLightbulbO };
+              },%
+}
+% bookmark: a shadowed square frame with cogs icon at upper left
+\mdfdefinestyle{bookmark}{%
+  linecolor=white,linewidth=1pt,%
+  tikzsetting={draw=black,line width=1pt},%
+  leftmargin=0,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=1em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=true,%
+  xcolor,%
+  hidealllines=true, leftline=true,%
+  firstextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faBookmarkO };
+             },%
+  secondextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faBookmarkO };
+              },%
+  middleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faBookmarkO };
+              },%
+  singleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faBookmarkO };
+              },%
+}
+% warn: frame with only left border and warning icon at upper left
+\mdfdefinestyle{warning}{%
+  linecolor=white,linewidth=1pt,%
+  innerlinewidth=1pt,outerlinewidth=1pt,
+  tikzsetting={draw=black,
+               decorate,
+               decoration={snake, amplitude=.5mm},
+               line width=.5pt},%
+  leftmargin=2pt,rightmargin=0,%
+  innertopmargin=1em,innerbottommargin=1em,%
+  innerleftmargin=1em,innerrightmargin=.5em,%
+  skipabove=0,skipbelow=0,%
+  frametitlerule=false,%
+  frametitlebackgroundcolor=white!0,%
+  nobreak=true,%
+  xcolor,%
+  hidealllines=true, leftline=true,%
+  firstextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+              node[symbol] { \faExclamationTriangle };
+             },%
+  secondextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faExclamationTriangle };
+              },%
+  middleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faExclamationTriangle };
+              },%
+  singleextra={\path let \p1=(P), \p2=(O) in ($(\x2,-.4)+1.0*(0,\y1)$)
+               node[symbol] { \faExclamationTriangle };
+              },%
+}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff --git a/jl-cours/mdtheorem.tex b/jl-cours/mdtheorem.tex
new file mode 100644
index 0000000..be27ea8
--- /dev/null
+++ b/jl-cours/mdtheorem.tex
@@ -0,0 +1,263 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+%
+% MDTHEOREM
+%
+%
+
+
+%% New theorem declarations and redirection of all standard previously defined
+%% environments to their starred version as they don't display numbering.
+%%
+
+% definition
+\mdtheorem[style=pencil, theoremseparator={},
+           theoremspace={}, roundcorner=6pt]{@def1}{Définition}
+\mdtheorem[style=nologo, theoremseparator={},
+           theoremspace={}, roundcorner=6pt]{@def2}{Définition}
+
+\RenewDocumentEnvironment{@def1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@def1*}
+  }{
+    \begin{@def1*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@def1*}
+}
+
+\RenewDocumentEnvironment{@def2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@def2*}
+  }{
+    \begin{@def2*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@def2*}
+}
+
+% theoreme
+\mdtheorem[style=pencil, theoremseparator={},
+           theoremspace={}, roundcorner=6pt,
+           outerlinewidth=1pt, outerlinecolor=black]{@thm1}{Théorème}
+\mdtheorem[style=nologo, theoremseparator={},
+           theoremspace={}, roundcorner=6pt,
+           outerlinewidth=1pt, outerlinecolor=black]{@thm2}{Théorème}
+
+\RenewDocumentEnvironment{@thm1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@thm1*}
+  }{
+    \begin{@thm1*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@thm1*}
+}
+
+\RenewDocumentEnvironment{@thm2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@thm2*}
+  }{
+    \begin{@thm2*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@thm2*}
+}
+
+% propriete
+\mdtheorem[style=pencil, theoremseparator={}, theoremspace={},
+           outerlinewidth=1pt, outerlinecolor=black]{@ppt1}{Propriété}
+\mdtheorem[style=nologo, theoremseparator={}, theoremspace={},
+           outerlinewidth=1pt, outerlinecolor=black]{@ppt2}{Propriété}
+
+\RenewDocumentEnvironment{@ppt1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@ppt1*}
+  }{
+    \begin{@ppt1*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@ppt1*}
+}
+
+\RenewDocumentEnvironment{@ppt2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@ppt2*}
+  }{
+    \begin{@ppt2*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@ppt2*}
+}
+
+% demonstration
+\mdtheorem[style=pencil, theoremseparator={},
+           theoremspace={}]{@dem1}{Démonstration}
+\mdtheorem[style=nologo, theoremseparator={},
+           theoremspace={}]{@dem2}{Démonstration}
+
+\RenewDocumentEnvironment{@dem1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@dem1*}
+  }{
+    \begin{@dem1*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@dem1*}
+}
+
+\RenewDocumentEnvironment{@dem2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@dem2*}
+  }{
+    \begin{@dem2*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@dem2*}
+}
+
+% vocabulaire
+\mdtheorem[style=pencil, theoremseparator={},
+           theoremspace={}]{@voc1}{Vocabulaire}
+\mdtheorem[style=nologo, theoremseparator={},
+          theoremspace={}]{@voc2}{Vocabulaire}
+
+\RenewDocumentEnvironment{@voc1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@voc1*}
+  }{
+    \begin{@voc1*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@voc1*}
+}
+
+\RenewDocumentEnvironment{@voc2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@voc2*}
+  }{
+    \begin{@voc2*}[\hfill{\normalfont\slshape#1}]
+  }
+}{%end
+  \end{@voc2*}
+}
+
+% commentaire
+\mdtheorem[style=quote, frametitle=none,
+           frametitleaboveskip=0em, frametitlebelowskip=0em]{@com}{}
+
+\RenewDocumentEnvironment{@com}{ o } {%begin
+ \IfNoValueTF {#1} {
+   \begin{@com*}
+ }{
+   \begin{@com*}[#1]
+ }
+}{%end
+\end{@com*}
+}
+
+% remarque
+\mdtheorem[style=warning, theoremseparator={ -},
+           theoremspace={}]{@rmq1}{Remarque(s)}
+\mdtheorem[style=warning, theoremseparator={},
+           theoremspace={}]{@rmq2}{}
+
+\RenewDocumentEnvironment{@rmq1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@rmq1*}
+  }{
+    \begin{@rmq1*}[#1]
+  }
+}{%end
+  \end{@rmq1*}
+}
+
+\RenewDocumentEnvironment{@rmq2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@rmq2*}
+  }{
+    \begin{@rmq2*}[#1]
+  }
+}{%end
+  \end{@rmq2*}
+}
+
+% exemple
+\mdtheorem[style=eye, theoremseparator={ -}, theoremspace={}]{@exe1}{ Exemple(s)}
+\mdtheorem[style=eye, theoremseparator={}, theoremspace={}]{@exe2}{}
+
+\RenewDocumentEnvironment{@exe1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@exe1*}
+  }{
+    \begin{@exe1*}[#1]
+  }
+}{%end
+  \end{@exe1*}
+}
+
+\RenewDocumentEnvironment{@exe2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@exe2*}
+  }{
+    \begin{@exe2*}[#1]
+  }
+}{%end
+  \end{@exe2*}
+}
+
+% application
+\mdtheorem[style=cogs, theoremseparator={ -},
+           theoremspace={}]{@app}{Application}
+
+\RenewDocumentEnvironment{@app}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@app*}
+  }{
+    \begin{@app*}[#1]
+  }
+}{%end
+  \end{@app*}
+}
+
+% methode
+\mdtheorem[style=bookmark, theoremseparator={ -},
+           theoremspace={}]{@met1}{Méthode}
+\mdtheorem[style=noborder, theoremseparator={},
+           theoremspace={}]{@met2}{}
+
+\RenewDocumentEnvironment{@met1}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@met1*}
+  }{
+    \begin{@met1*}[#1]
+  }
+}{%end
+  \end{@met1*}
+}
+
+\RenewDocumentEnvironment{@met2}{ o } {%begin
+  \IfNoValueTF {#1} {
+    \begin{@met2*}
+  }{
+    \begin{@met2*}[#1]
+  }
+}{%end
+  \end{@met2*}
+}
+
+% exercice
+\newtheoremstyle{@exe}
+  {\topsep}% espace avant
+  {\topsep}% espace apres
+  {}% Police utilisee par le style de thm
+  {}% Indentation (vide = aucune, \parindent = indentation paragraphe)
+  {\bfseries}% Police du titre de thm
+  {}% Signe de ponctuation apres le titre du thm
+  {\newline}% Espace apres le titre du thm (\newline = linebreak)
+  {\thmname{#1}\thmnumber{ #2}\thmnote{ - \normalfont{\textit{#3}}}}
+  % composants du titre du thm : \thmname = nom, \thmnumber = numéro, \thmnote = sous-titre
+
+\theoremstyle{@exe}
+\newtheorem{exercice}{Exercice}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%