@@ -2,16 +2,15 @@
22\usepackage[T1]{fontenc}
33\usepackage{lmodern}
44\usepackage{amssymb,amsmath}
5−\usepackage{iftex}
5+\usepackage{ifxetex,ifluatex}
66\usepackage{fixltx2e} % provides \textsubscript
7−\ifPDFTeX % use microtype with pdflatex if available
8− \IfFileExists{microtype.sty}{\usepackage{microtype}}{}
9−\fi
10−\ifPDFTeX
7+% use microtype if available
8+\IfFileExists{microtype.sty}{\usepackage{microtype}}{}
9+\ifnum 0\ifxetex 1\fi\ifluatex 1\fi=0 % if pdftex
1110 \usepackage[utf8]{inputenc}
12−\else
11+\else % if luatex or xelatex
1312 \usepackage{fontspec}
14− \ifXeTeX
13+ \ifxetex
1514 \usepackage{xltxtra,xunicode}
1615 \fi
1716 \defaultfontfeatures{Mapping=tex-text,Scale=MatchLowercase}
@@ -37,7 +36,7 @@
3736\newcommand{\RegionMarkerTok}[1]{{#1}}
3837\newcommand{\ErrorTok}[1]{\textcolor[rgb]{1.00,0.00,0.00}{\textbf{{#1}}}}
3938\newcommand{\NormalTok}[1]{{#1}}
40−\ifXeTeX
39+\ifxetex
4140 \usepackage[setpagesize=false, % page size defined by xetex
4241 unicode=false, % unicode breaks when used with xetex
4342 xetex]{hyperref}