\begin{center}\begin{minipage}{15cm}\begin{Verbatim}[frame=single]
> L = [|1,2,true,3...|];
> L;
[|1, 2, true, 3...|]
> L[2];
true
> L[3];
3
> L[4];
4
> L[1200];
1200
> L = [|1,...,5,true...|];
> L;
[|1, 2, 3, 4, 5, true...|]
> L[1200];
true
\end{Verbatim}
\end{minipage}\end{center}
