src/Pure/ex/document/root.tex

just one pass is sufficient (see also cc8391b92747, 3e8a897042d9);

\documentclass[10pt,a4paper]{report}
\usepackage[T1]{fontenc}
\usepackage{ifthen,proof,amssymb,isabelle,isabellesym}

\isabellestyle{sltt}
\usepackage{pdfsetup}\urlstyle{rm}


\hyphenation{Isabelle}

\begin{document}

\title{Miscellaneous examples and experiments for Isabelle/Pure}
\maketitle

\parindent 0pt \parskip 0.5ex

\input{session}

\end{document}