\emergencystretch 1.5em
\hfuzz 0.3pt
-% additional setting for Japanese manual
-\IfFileExists{pxjahyper.sty}
-{\usepackage{pxjahyper}}
-
-\usepackage{t1enc}
+\usepackage{iftex}
+\iftutex\else
+ % Not Xe/LuaTeX:
+ % additional setting for Japanese manual
+ \IfFileExists{pxjahyper.sty}{\usepackage{pxjahyper}}
+ \usepackage{t1enc}
+\fi
+
+% need to increase this
+\AtBeginDocument{\premulticols = 70pt}
\end_preamble
\options bibliography=totoc,index=totoc,BCOR7.5mm,titlepage,captions=tableheading,bookmarkpackage=false
\use_default_options false