@@ -1,7 +1,18 @@
11\documentclass{article}
22\usepackage{amssymb,amsmath}
3−\usepackage[mathletters]{ucs}
4−\usepackage[utf8x]{inputenc}
3+\usepackage{iftex}
4+\ifXeTeX
5+ \usepackage{fontspec,xltxtra,xunicode}
6+ \defaultfontfeatures{Mapping=tex-text,Scale=MatchLowercase}
7+\else
8+ \ifLuaTeX
9+ \usepackage{fontspec}
10+ \defaultfontfeatures{Mapping=tex-text,Scale=MatchLowercase}
11+ \else
12+ \usepackage[mathletters]{ucs}
13+ \usepackage[utf8x]{inputenc}
14+ \fi
15+\fi
516\usepackage{fancyvrb}
617% Redefine labelwidth for lists; otherwise, the enumerate package will cause
718% markers to extend beyond the left margin.
@@ -28,7 +39,7 @@
2839\usepackage[breaklinks=true,unicode=true,pdfborder={0 0 0}]{hyperref}
2940\setlength{\parindent}{0pt}
3041\setlength{\parskip}{6pt plus 2pt minus 1pt}
31−\setlength{\emergencystretch}{3em} -- prevent overfull lines
42+\setlength{\emergencystretch}{3em} % prevent overfull lines
3243\setcounter{secnumdepth}{0}
3344\VerbatimFootnotes % allows verbatim text in footnotes
3445