%\documentclass[aps,prl,twocolumn,showpacs,superscriptaddress]{revtex4}
\documentclass[12pt]{article}
\begin{document}
\title{An Example Manuscript}
\author{Cemal Yalabik}
\date{\today}
\maketitle
\abstract{This is where I put a summary of what I have written about}
\section{This is the First Section}
Things I write in the first section
\section{Second Section}
\subsection{A subsection}
This is an example of a subsection.

\end{document}