\subsection{file}
\label{labfile}
\noindent Name: \textbf{file}\\
\phantom{aaa}special value for commands \textbf{plot} and \textbf{externalplot}\\[0.2cm]
\noindent Library names:\\
\verb|   sollya_obj_t sollya_lib_file()|\\
\verb|   int sollya_lib_is_file(sollya_obj_t)|\\[0.2cm]
\noindent Description: \begin{itemize}

\item \textbf{file} is a special value used in commands \textbf{plot} and \textbf{externalplot} to save
   the result of the command in a data file.

\item As any value it can be affected to a variable and stored in lists.
\end{itemize}
\noindent Example 1: 
\begin{center}\begin{minipage}{15cm}\begin{Verbatim}[frame=single]
> savemode=file;
> name="plotSinCos";
> plot(sin(x),0,cos(x),[-Pi,Pi],savemode, name);
\end{Verbatim}
\end{minipage}\end{center}
See also: \textbf{externalplot} (\ref{labexternalplot}), \textbf{plot} (\ref{labplot}), \textbf{postscript} (\ref{labpostscript}), \textbf{postscriptfile} (\ref{labpostscriptfile})
