<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 7-4-1 on page 479.
%% 
%%  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{135.83385pt}
\StartShownPreambleCommands
\usepackage[arrow]{xy}
\StopShownPreambleCommands
\begin{document}
\[\begin{xy}
  (0,-20)="a", (0,0)="b"
  \ar@{&lt;.||}  @&lt;24mm&gt;  "a";"b" \ar@^{&lt;.||} @&lt;16mm&gt;  "a";"b"
  \ar@_{&lt;.||} @&lt;8mm&gt;   "a";"b" \ar@0{&lt;.||}          "a";"b"
  \ar@1{&lt;.||} @&lt;-8mm&gt;  "a";"b" \ar@2{&lt;.||} @&lt;-16mm&gt; "a";"b"
  \ar@3{&lt;.||} @&lt;-24mm&gt; "a";"b"
  \end{xy}\]
\end{document}
</pre></body></html>