%\documentstyle[a4,12pt]{article}
\documentstyle[12pt]{article}
\newcommand{\AmSTeX}{$\cal A\kern-.1667em\lower.5ex
\hbox{$\cal M$}\kern-.125em S$-\TeX}
\newcommand{\italappenditem}[1]{\vskip 14.4pt\relax
      {\parskip = 0pt\relax\hbox{\it #1}}\vskip 4.8pt\relax
      \nopagebreak}
\let\sectiontitle=\section
\let\subsectiontitle=\subsection
\let\appenditem=\italappenditem
\begin{document}
\title{Getting Started with Plain \TeX}
\author{D. R. Wilkins}
\maketitle

\tableofcontents

\input pl_intro
\input pl_text
\input pl_math
\input pl_furth

% APPENDICES BEGIN HERE
\appendix

\input pl_txtcs
\input pl_mthcs

\end{document}