enhance glossary

doc/chapter/appendix.tex

@@ -19,6 +19,8 @@
         Extremal layout & Defines in which order the layers are traversed and if a node is aligned with its upper or lower median. & Leftmost lower \\
         \rowcolor{gray!25}
         Automatic execution & The state of the \code{AnimationController} where it repeatedly sends step commands with a certain delay & See section~\ref{sec:userInterface} \\
+        Automatic backwards execution & Special case of automatic execution in backwards direction & See section~\ref{sec:userInterface} \\
+        \rowcolor{gray!25}
         step overrun & The state of the \code{AnimationController} where it repeatedly sends step commands, but only inserts a delay after steps whose line of pseudocode is currently unfolded in the pseudocode view. & See section~\ref{sec:userInterface} \\
         \\\\
 	\end{longtable}