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%                                               
%            Shizuoka University 
%       ----KANEKO & YAMASHITA LAB.----
%        Author: TSUCHIYA, Toru
%     File Name: rensyu04-1.tex
% Last Modified: Wed, 06 Jun 2007 14:42:31 +0900
%                                               
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\documentclass[a4j]{jarticle}
\begin{document}
\section{はじめに}
なるべく行間を詰めて
\section{実験}
まったく空行を入れないで
\subsection{装置}
書いていますからとても見にくいですが
\subsection{結果}
このようにきちんとレイアウトされます
\end{document}