\documentclass[a4paper,11pt]{article}

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\usepackage[french]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
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\usepackage{makeidx}
\usepackage{listings}
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\usepackage{xspace}
\usepackage[verbose]{layout}

\makeindex
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\title{Floating images processing}
\author{tTh}

\begin{document}
\maketitle

\section{Image flottante ?}

De quoi parle-t-on exactement ?

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\tableofcontents

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\section{Example}

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\section{Les outils}

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\printindex

\end{document}