Added some notes about types of modules and environment variables

Lectures/L14_MIS/MIS.tex

@@ -172,9 +172,10 @@ Room for more volunteers.  :-)
 \begin{itemize}
 \item Access routine syntax (types of inputs and outputs)
 \item State variables
-\item Environment variables
+\item Environment variables (necessary for modules with files/screens/keyboards)
+\item Type of module (record, ``library'', abstract object, ADT, generic)
 \end{itemize}
-\item Likely better to discuss MG secret together with MIS syntax
+\item Discuss MG secret together with MIS syntax
 \item Not necessary to cover all details
 \end{itemize}
 \end{frame}