\def\figr#1{\begin{minipage}[]{0.3\tw}\GWig{width=\textwidth}{Handling/DataAccess/Survey/figs/4665/#1.png}\\ \small \centering #1 \end{minipage} \hspace{0.02\textwidth}}
\def\GWslide{
\begin{frame} \frametitle{Plot \#4665 $U_{l}$ graph}
  \begin{figure}[t]
    \centering
\figr{python}
\figr{gnuplot}
\figr{mathematica}\\~\\
\figr{idl}
\figr{octave}
\figr{matlab}
  \end{figure}
\end{frame}}