\begin{diagram}{For statement}{forstatement}
\begin{mysyntdiag}
\synt{for\ in\ statement} 
\lit*{for}
\synt{control\ variable}
\lit*{in}
\synt{enumerable}
\lit*{do}
\synt{statement}
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{control\ variable} \synt{variable\ identifier}
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{enumerable} 
\begin{stack}
\synt{enumerated\ type} \\
\synt{expression} 
\end{stack}
\end{mysyntdiag}
\end{diagram}