\documentclass[11pt, letterpaper]{article}
\author{An author}
\title{A title}
\date{What day is it?}
\usepackage{dramatist}
\usepackage{listings}
\begin{document}
\maketitle
\newpage
\part{Part 1}
\chapter{Chapter 1}
\section{Section 1}
\par \underline{Some text}

\end{document}