\documentclass{article}

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\usepackage{lmodern}
\usepackage[a4paper]{geometry}
\usepackage[french]{babel}

\usepackage[backend=biber,style=alphabetic,sorting=nyt]{biblatex}
\addbibresource{refs.bib}

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%\usepackage{tikz}
%\usepackage{pgfplots}
%\pgfplotsset{compat=1.17}

\usepackage{hyperref}
\hypersetup{pdfstartview=XYZ}

%\title{Guide {\LaTeX} -- {\TikZ} -- {\tt pgfplots}}
%\author{Stéphane Vinatier\\
%  {\tt stephane.vinatier@unilim.fr}
%  }
%\date{}
%Formation doctorale}
%\maketitle

\begin{document}

Bonjour ! 

\end{document}
