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\documentclass{ltjsarticle}% compiler: lualatex-------------------------
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% 書式------------------------------------------------------------------
\usepackage{luatexja}% lualatexの日本語設定
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% document================================================================
\begin{document}%
\normalsize%
There is something \block{to}{目的} talk about.\vspace{1cm}%
\Large%
There is something \block{to}{目的} talk about.\vspace{1cm}%
\LARGE%
There is something \block{to}{目的} talk about.\vspace{1cm}%
\end{document}%