\documentclass[12pt,a4paper]{article}
\oddsidemargin=4.6mm
\evensidemargin=4.6mm
\textwidth=150mm
\topmargin=4.6mm
\headheight=0mm
\headsep=0mm
\textheight=234mm
\usepackage{isabelle,isabellesym}
% further packages required for unusual symbols (see also
% isabellesym.sty), use only when needed
\usepackage{amssymb}
%for \<leadsto>, \<box>, \<diamond>, \<sqsupset>, \<mho>, \<Join>,
%\<lhd>, \<lesssim>, \<greatersim>, \<lessapprox>, \<greaterapprox>,
%\<triangleq>, \<yen>, \<lozenge>
%\usepackage[greek,english]{babel}
%option greek for \<euro>
%option english (default language) for \<guillemotleft>, \<guillemotright>
%\usepackage[latin1]{inputenc}
%for \<onesuperior>, \<onequarter>, \<twosuperior>, \<onehalf>,
%\<threesuperior>, \<threequarters>, \<degree>
\usepackage[only,bigsqcap]{stmaryrd}
%for \<Sqinter>
%\usepackage{eufrak}
%for \<AA> ... \<ZZ>, \<aa> ... \<zz> (also included in amssymb)
%\usepackage{textcomp}
%for \<cent>, \<currency>
% this should be the last package used
\usepackage{pdfsetup}
% urls in roman style, theory text in math-similar italics
\urlstyle{rm}
\isabellestyle{it}
% for uniform font size
\renewcommand{\isastyle}{\isastyleminor}
\parindent 0pt\parskip 0.5ex
\usepackage{supertabular}
\begin{document}
\title{What's in Main}
\author{Tobias Nipkow}
\date{\today}
\maketitle
\input{Main_Doc}
% optional bibliography
%\bibliographystyle{abbrv}
%\bibliography{root}
\end{document}