\begin{figure}
% \textcolor{magenta}{*** Figure 4 ***}
% \textcolor{magenta}{*** New figure ***}
  \begin{center}
   \includegraphics[width=0.95\textwidth]{figures/figure04/figure_04-O-grids_in_2D_slice_gimp.pdf}
  \end{center}
 \caption[Plots of the 2D plane domain and mesh used to represent the molten salt fast reactor.]{}\label{fig:04} % first figure in \S\,\ref{casestud:03}
\end{figure}
