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%%
%% The LaTeX Graphics Companion, 2ed (first printing May 2007)
%%
%% Example 7-4-3 on page 480.
%%
%% 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{183.83385pt}
\StartShownPreambleCommands
\usepackage[arrow]{xy}
\StopShownPreambleCommands
\begin{document}
\[\begin{xy} <6mm,0mm>:
(0,0)*+\txt\small{Origin}="O"
\ar@{.>>}
`r (3,2) *\dir{*}*+!DL{\mathrm{P_1}} ^-1
` (-2,2)*\dir{*}*+!U{\mathrm{P_2}} ^2
`_dr(-2,0)*\dir{*}*+!U{\mathrm{P_3}} _(.3)3
`dr^r "O" _(.8)4
"O" ^-(.2)5
\end{xy}\]
\end{document}
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