\setlength{\unitlength}{0.01428in}
%
\begingroup\makeatletter\ifx\SetFigFont\undefined
% extract first six characters in \fmtname
\def\x#1#2#3#4#5#6#7\relax{\def\x{#1#2#3#4#5#6}}%
\expandafter\x\fmtname xxxxxx\relax \def\y{splain}%
\ifx\x\y   % LaTeX or SliTeX?
\gdef\SetFigFont#1#2#3{%
  \ifnum #1<17\large\else \ifnum #1<20\large\else
  \ifnum #1<24\large\else \ifnum #1<29\large\else
  \ifnum #1<34\Large\else \ifnum #1<41\LARGE\else
     \huge\fi\fi\fi\fi\fi\fi
  \csname #3\endcsname}%
\else
\gdef\SetFigFont#1#2#3{\begingroup
  \count@#1\relax \ifnum 25<\count@\count@25\fi
  \def\x{\endgroup\@setsize\SetFigFont{#2pt}}%
  \expandafter\x
    \csname \romannumeral\the\count@ pt\expandafter\endcsname
    \csname @\romannumeral\the\count@ pt\endcsname
  \csname #3\endcsname}%
\fi
\fi\endgroup

\begin{picture}(0,0)(148,179)%
\special{psfile=tdir3.ps}%
\end{picture}%

\begin{picture}(295,179)(0,0)
\put(205,108){$\Pi$}
\put(140,70){\makebox(0,0)[br]{$C_{it}$}}
\put(185,162){\makebox(0,0)[b]{${\bf n}_\pi$}}
\put(30,155){\makebox(0,0)[br]{$S_i$}}
\put(265,150){$S_t$}
\put(115,148){\makebox(0,0)[br]{$G_{it}$}}
\put(148,114){\makebox(0,0)[br]{${\bf r}_\pi$}}
\end{picture}
