\begin{diagram}{object types}{objecttype}
\begin{mysyntdiag}
\[ \lit*{packed} \]
\lit*{object} 
\[ heritage \]
\[ 
\begin{rep}[b]
  \synt{component\ list} \\ 
  \synt{object\ visibility\ specifier} 
\end{rep} \lit*{end} 
\]
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{heritage} \lit*( \synt{object\ type\ identifier} \lit* )
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{component\ list} 
\[ \<[b] \synt{field\ definition} \\ \> \]
\[ \<[b] \synt{method\ definition} \\ \> \]
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{field\ definition} \synt{identifier\ list} \lit*: \synt{type} \lit*;
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{method\ definition} 
\( 
\synt{function\ header} \\
\synt{procedure\ header} \\
\synt{constructor\ header} \\
\synt{desctuctor\ header}
\)
\lit*; \synt{method\ directives} 
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{method\ directives}
\[
\lit*{virtual} \lit*;
\]
\[ \synt{call\ modifiers} \lit*; \]
\[
\lit*{abstract} \lit*;
\]
\end{mysyntdiag}
\begin{mysyntdiag}
\synt{object\ visibility\ specifier}
\( 
\lit*{private} \\
\lit*{public}
\)
\end{mysyntdiag}
\end{diagram}