\documentclass{article}
\usepackage{amssymb}
\usepackage[dvips]{graphicx}
\usepackage{verbatim}
\begin{document}

\title{Energy calibration wizard manual}
\author{Anna Bergamaschi}
\date{\today}
\maketitle


\section{Introduction}
\input{enCal.tex}
\end{document}