\begin{schemeregion}
{
\newcommand\modulebox[4]{%
\hbox{\framebox{\parbox[t][0.92in][t]{1.0in}{\raggedright{\large #1}\\{\small phase #2}\\{\tiny #4}}}}}

%% \newcommand\modulebox[4]{%
%% \hbox{\framebox{\vbox{\hbox to 1.6in{\large #1}\hbox{\small phase #2 of #3}\hbox{\footnotesize #4}}}}}

\newcommand\modline{\hbox{\hskip 0.5in\vrule height0.1in width1pt}}

\newcommand\cmodulebox[4]{\modulebox{#1}{#2}{}{#4}}
\newcommand\rmodulebox[3]{\modulebox{#1}{#2}{}{#3}}

% parts macros
\newcommand\CT{invoke compile-time part}
\newcommand\EandCT{expand macros, invoke compile-time parts}
\newcommand\CTandRT{invoke compile-time and run-time parts}

\begin{figure}
$$
\begin{array}{cccc}
\mbox{compiling \variablefont{storage}} & \mbox{compiling
  \variablefont{memory}} & 
\mbox{compiling \variablefont{more}} & \mbox{executing
  \variablefont{more}} \\ \hline 
\vbox{%
\cmodulebox{storage}{0}{storage}{\EandCT}%
} &
\vbox{%
\cmodulebox{storage}{1}{memory}{\CTandRT}%
\modline%
\cmodulebox{memory}{0}{memory}{\EandCT}%
} & 
\vbox{%
\vspace{2mm}
\cmodulebox{storage}{1}{more}{\CTandRT}%
\modline%
\cmodulebox{memory}{0}{more}{\CT}%
\modline%
\cmodulebox{more}{0}{more}{\EandCT}%
} &
\vbox{%
\rmodulebox{storage}{1}{\CTandRT}%
\modline%
\rmodulebox{memory}{0}{\CTandRT}%
\modline%
\rmodulebox{more}{0}{\CTandRT}%
} \\
\end{array}
$$
\caption{Module invocations for the execution of \variablefont{more}}%
\label{fig:module-invocations}%
\end{figure}
}
\end{schemeregion}