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\section{Package description}
\subsection{Prerequisites}
This package requires the CVNList to compile and work properly.

\subsection{Classes}
The package is named PERR and contains class as seen in the table.
Page is the page where this class is described, the rest is selfexplaining. 

\begin{center}
\begin{tabular}{|l|l|l|}
\hline
\multicolumn{3}{|c|}{\bfseries PERR}\\
\hline
{\bfseries Class}& {\bfseries Page}& {\bfseries import path}\\
\hline
CERR 		& \pageref{err:cerr} 		& PERR.CERR\\
IERR\_gui 	& \pageref{err:ierr-gui} 	& PERR.IERR\_gui\\
\hline
\end{tabular}
\end{center}



