

    \filetitle{irisrequired}{Throw error if the installed version of IRIS fails to comply with the required minimum}{config/irisrequired}

	\paragraph{Syntax}
 
 \begin{verbatim}
 irisrequired(V)
 \end{verbatim}
 \paragraph{Input arguments}
 
 \begin{itemize}
 \item
   \texttt{V} {[} char {]} - Text string describing the oldest acceptable
   distribution of IRIS.
 \end{itemize}
 \paragraph{Description}
 
 If the version of IRIS present on the computer does not comply with the
 minimum requirement \texttt{v}, an error is thrown.
 
 \paragraph{Example}
 
 All of the three calls are valid:
 
 \begin{verbatim}
 irisrequired(20111222);
 irisrequired('20111222');
 irisrequired 20111222;
 \end{verbatim}


