Include screen shots with 'scale' instead of 'width' and 'height' for…

… consistent scaling

chapters/annotations.tex

@@ -1299,8 +1299,11 @@ \section{Annotations for the Graphical User Interface}\label{annotations-for-the
 should not be modified by the user (an alternative is to show parameter
 \lstinline!nInports! in the menu but with disabled input field):
 
-\includegraphics[width=2.25in,height=1.125in]{disabledparameter}
-\includegraphics[width=2.625in,height=0.89583in]{tabparameter}\\
+\begin{center}
+\includegraphics[scale=0.5]{disabledparameter}
+\quad
+\includegraphics[scale=0.5]{tabparameter}\\
+\end{center}
 \end{example}
 
 \begin{nonnormative}