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%%
%% An UIT Edition example
%%
%% Example 08-01-16 on page 155.
%%
%% Copyright (C) 2010 Herbert Voss
%%
%% 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.
%%
%%
%% ====
% Show page(s) 1
%%
\documentclass[]{exaarticle}
\pagestyle{empty}
\setlength\textwidth{177.70511pt}
\AtBeginDocument{\setlength\parindent{0pt}}
\StartShownPreambleCommands
\newcommand*\dx{\mathrm{d}x}
\newcommand*\dy{\mathrm{d}y}
\StopShownPreambleCommands
\begin{document}
\[\int\int_D \dx\dy \quad
\int\!\int_D \dx\,\dy \]
\[\int\!\!\int_D \dx\,\,\dy \quad
\int\!\!\!\int_D \dx\,\,\,\dy \]
\[\int\!\!\!\!\int_D \dx\,\,\,\,\dy \quad
\int\!\!\!\!\!\int_D \dx\,\,\,\,\,\dy \]
\[\int\!\!\!\int_D \dx\dy\]
\end{document}
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