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%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 8-6-14 on page 586.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{207.83385pt}
\StartShownPreambleCommands

\StopShownPreambleCommands
\begin{document}
.PS
cct_init
hgt = elen_*1.5
ewd = dimen_*0.9

define(`sresistor',`resistor(right_ ewd); llabel(,r)')
define(`sinductor',`inductor(right_ ewd,W); llabel(,L)')

define(`tsection',`sinductor
  { dot; line down_ hgt*0.25; dot
    gpar_( resistor(down_ hgt*0.5); rlabel(,R),
          capacitor(down_ hgt*0.5); rlabel(,C))
    dot; line down_ hgt*0.25; dot }
  sresistor ')

SW: Here
  gap(up_ hgt)
  sresistor
  for i=1 to 4 do { tsection }
  line dotted right_ dimen_/2
  tsection
  gap(down_ hgt)
  line to SW
.PE
\usebox{\graph}
\end{document}