\usepackage[bookmarks=false,ps2pdf]{hyperref}
\usepackage[american]{babel}
\usepackage{matex}
+\usepackage{legacy_1}
+\usepackage{ground_1}
+\usepackage{basic_1}
\newcounter{node}
\renewcommand*\ObjIncNode{\stepcounter{node}}
\renewcommand*\ObjNode{\arabic{node} }
+\title{The Core Theory of the Formal System $\lambda\delta\hbox{-}1$}
+
+\author{Ferruccio Guidi}
+
\begin{document}
+\maketitle
+
\input{objs}
\end{document}