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\section{Numbering of the vertices}
There is an option that permits the marking of the vertices (with a black circle) and/or numbers them either globally or individually.
\begin{itemize}
\item \verb+[show=all]+ marks all the vertices;
\item \verb+[num=all]+ numbers all the vertices;
\item \verb+[show=0 1 2 3]+ marks the vertices with the index number 0, 1, 2 and 3;
\item \verb+[num=0 1 2 3]+ numbers the vertices with the index number 0, 1, 2 and 3.
\end{itemize}
%
\begin{LTXexample}[width=6cm]
\begin{pspicture}(-3,-2.5)(7,2.5)
\psset{viewpoint=50 20 20 rtp2xyz,Decran=40}
\psSolid[
action=draw,
object=cube,
RotZ=30,
show=all,
num=all
]%
\end{pspicture}
\end{LTXexample}
\begin{LTXexample}[width=6cm]
\begin{pspicture}(-3,-2.5)(7,2.5)
\psset{viewpoint=50 20 20 rtp2xyz,Decran=40}
\psSolid[action=draw,
object=cube,
RotZ=30,
show=0 1 2 3,
num=0 1 2 3
]%
\end{pspicture}
\end{LTXexample}
\endinput
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