\section{Rule number 6: links}
\begin{frame}{Link referencing}
    We can use Markdown link references by declaring a reference at the end of the mail body like this:

    \begin{center}
        \texttt{[1]: pweapon.org}
    \end{center}\pause

    Then I reference it like either this:

    \begin{center}
        \texttt{[Best hackerspace in Parma][1]}
    \end{center}\pause

    Or without brackets, like in scientific articles:

    \begin{center}
        \texttt{Best hackerspace in Parma [1]}
    \end{center}
\end{frame}