\subsection{boolean}
\label{labboolean}
\noindent Name: \textbf{boolean}\\
\phantom{aaa}keyword representing a \textsf{boolean} type \\[0.2cm]
\noindent Library name:\\
\verb|   SOLLYA_EXTERNALPROC_TYPE_BOOLEAN|\\[0.2cm]
\noindent Usage: 
\begin{center}
\textbf{boolean} : \textsf{type type}\\
\end{center}
\noindent Description: \begin{itemize}

\item \textbf{boolean} represents the \textsf{boolean} type for declarations
   of external procedures by means of \textbf{externalproc}.
    
   Remark that in contrast to other indicators, type indicators like
   \textbf{boolean} cannot be handled outside the \textbf{externalproc} context.  In
   particular, they cannot be assigned to variables.
\end{itemize}
See also: \textbf{externalproc} (\ref{labexternalproc}), \textbf{constant} (\ref{labconstant}), \textbf{function} (\ref{labfunction}), \textbf{integer} (\ref{labinteger}), \textbf{list of} (\ref{lablistof}), \textbf{range} (\ref{labrange}), \textbf{string} (\ref{labstring}), \textbf{object} (\ref{labobject})
