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%\begin{titlepage}
 \author{Leslie A. Aamport\thanks{to Peter}}
 \title{The Gnats and Gnus\thanks{to Paul}}
 \subtitle{A Document Preparation System\thanks{to Mary}}
 \shortauthor{Aamport}
 \shorttitle{The Gnats and Gnus}

\maketitle

 \begin{abstract}
   Starting from a historical point of view \dots
 \end{abstract}
 
 \begin{keywords}
   Gnats, Gnus
 \end{keywords}
 
%\end{titlepage}


\section{Why Gnu}

According to \cite{book-full}\footnote{Note} \dots

\begin{itemize}
\item Some items are 
  \begin{itemize}
  \item bullets.
  \end{itemize}
  \begin{enumerate}
  \item And some items 
    \begin{enumerate}
    \item are numbers.
    \end{enumerate}
  \end{enumerate}
\item But some items are
  \begin{description}
  \item[gnus] A sort of large aninals.
  \end{description}
\end{itemize}


\subsection{Everything is changing}

\newtheorem{change}{Change}

\begin{change}
  Even fonts are changing.
\end{change}


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  \caption{The body of the caption.}
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