\usepackage{makeidx} % allows index generation
\usepackage{graphicx} % standard LaTeX graphics tool
% when including figure files
\usepackage{multicol} % used for the two-column index
\usepackage[bottom]{footmisc}% places footnotes at page bottom
\usepackage{alltt}
\usepackage[T1]{fontenc}
\usepackage{ccfonts}
\usepackage[euler-digits]{eulervm}
\usepackage{isabelle,isabellesym}
\usepackage{mathpartir}
\usepackage{amssymb}
\renewcommand*\descriptionlabel[1]{\hspace\labelsep \textbf{#1}\hfil}
% this should be the last package used
\usepackage{xcolor}
\definecolor{linkcolor}{rgb}{0,0,0.4}
\usepackage[colorlinks=true,linkcolor=linkcolor,citecolor=linkcolor,
filecolor=linkcolor,pagecolor=linkcolor,
urlcolor=linkcolor]{hyperref}
% urls in roman style, theory text in math-similar italics
\urlstyle{tt}
\isabellestyle{it}
\renewcommand{\isadigit}[1]{\ensuremath{#1}}
% font size
\renewcommand{\isastyle}{\isastyleminor}
% indexing
\usepackage{ifthen}
\newcommand{\indexdef}[3]%
{\ifthenelse{\equal{}{#1}}{\index{#3 (#2)|bold}}{\index{#3 (#1\ #2)|bold}}}
% section commands
\renewcommand{\chapterautorefname}{Chapter}
\renewcommand{\sectionautorefname}{Section}
\renewcommand{\subsectionautorefname}{Section}
\renewcommand{\isamarkupheader}[1]{{\rmfamily\subsection{#1}}}
\renewcommand{\isamarkupsection}[1]{{\rmfamily\subsection{#1}}}
\renewcommand{\isamarkupsubsection}[1]{{\rmfamily\subsubsection{#1}}}
% isabelle in-text command font
\newcommand{\isacom}[1]{\isa{\isacommand{#1}}}
\protected\def\isacharunderscore{\raisebox{2pt}{\_\kern-1.7pt}}
\protected\def\isacharunderscorekeyword{\raisebox{2pt}{\_}}
% isabelle keyword, adapted from isabelle.sty
\renewcommand{\isakeyword}[1]
{\emph{\def\isachardot{.}\def\isacharunderscore{\isacharunderscorekeyword}%
\def\isacharbraceleft{\{}\def\isacharbraceright{\}}\def\bfdefault{sbc}\textbf{#1}}}
% add \noindent to text blocks automatically
\renewenvironment{isamarkuptext}{\par\isastyletext\begin{isapar}\noindent}{\end{isapar}}
\renewenvironment{isamarkuptxt}{\par\isastyletext\begin{isapar}\noindent}{\end{isapar}}
\newcommand{\noquotes}[1]{{\renewcommand{\isachardoublequote}{}\renewcommand{\isachardoublequoteopen}{}\renewcommand{\isachardoublequoteclose}{}#1}}
\newcommand{\xsymbol}[1]{\texttt{\char`\\\char`<#1>}}
%index
\newcommand{\conceptnoidx}[1]{\textbf{#1}}
\newcommand{\concept}[1]{\conceptnoidx{#1}\index{#1}}
\newcommand{\conceptidx}[2]{\conceptnoidx{#1}\index{#2}}
\newcommand{\indexed}[2]{#1\index{#2@#1}}
\newcommand{\isabox}{\fbox}
\newcommand{\bigisabox}[1]
{\isabox{\renewcommand{\isanewline}{\\}%
\begin{tabular}{l}#1\end{tabular}}}
%%%% ``WARNING'' environment: 2 ! characters separated by negative thin space
%\def\warnbang{\vtop to 0pt{\vss\hbox{\let\bfdefault=\bfdefaultold\Huge\textbf{!$\!$!}}\vss}}
\def\warnbang{\vtop to 0pt{\vss\hbox{\includegraphics[width=3ex, height=5.5ex]{bang}}\vss}}
\newenvironment{warn}{\begin{trivlist}\small\item[]\noindent%
\begingroup\hangindent=\parindent\hangafter=-2%\clubpenalty=10000%
\def\par{\endgraf\endgroup}%
\hbox to0pt{\hskip-\hangindent\warnbang\hfill}\ignorespaces}
{\par\end{trivlist}}
\chardef\isachardoublequote=`\"%
\chardef\isachardoublequoteopen=`\"%
\chardef\isachardoublequoteclose=`\"%
\renewcommand{\isacharbackquoteopen}{\isacharbackquote}
\renewcommand{\isacharbackquoteclose}{\isacharbackquote}
\hyphenation{Isa-belle}