An example of an ``article’’:
\documentclass{article} \begin{document} \author{A. U. Thor} \title{Yet another \LaTeX{} document} \maketitle \tableofcontents \section{The first section} \label{sec:first} \section{The second section} \label{sec:second} \subsection{A subsection} \label{subsec:first} \subsection{Another one} \label{subsec:second} \section*{Appendix} This documents has a few sections: Section~\ref{sec:first}, Section~\ref{sec:second}, which consists of Subsection~\ref{subsec:first} and Subsection~\ref{subsec:second}, and an unnumbered Appendix. Unsurprisingly, Section~\ref{sec:first} begins on page~\pageref{sec:first}. There can be also subsubsections, ``paragraphs'', and ``subparagraphs'', but it is better not to overuse them without a good reason. On the other hand, there are also larger structures: parts and chapters\footnote{In the ``book'' document class.}. \end{document}