\documentclass[11pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage{graphicx,isabelle,isabellesym,latexsym}
\usepackage[only,bigsqcap]{stmaryrd}
\usepackage{textcomp}
\usepackage{pdfsetup}
\urlstyle{rm}
\isabellestyle{it}
\pagestyle{myheadings}
\newcommand{\isasymas}{\textsf{as}}
\newcommand{\isasymlazy}{\isamath{\sim}}
\newcommand{\isasymnotsqsubseteq}{\isamath{\not\sqsubseteq}}
\begin{document}
\title{Isabelle/HOLCF --- Higher-Order Logic of Computable Functions}
\maketitle
\tableofcontents
\begin{center}
\includegraphics[scale=0.45]{session_graph}
\end{center}
\newpage
\renewcommand{\setisabellecontext}[1]{\markright{THEORY~``#1''}}
\parindent 0pt\parskip 0.5ex
\input{session}
\end{document}