<?
\documentclass[12pt]{article}
\title{\LaTeX}

\date{}
\begin{document}
  \maketitle \LaTeX{} is a document preparation system for the \TeX{}
  typesetting program. It offers programmable desktop publishing
  features and extensive facilities for automating most aspects of
  typesetting and desktop publishing, including numbering and
  cross-referencing, tables and figures, page layout, bibliographies,
  and much more. \LaTeX{} was originally written in 1984 by Leslie
  Lamport and has become the dominant method for using \TeX; few
  people write in plain \TeX{} anymore. The current version is
  \LaTeXe.
  \newline
  % This is a comment, it is not shown in the final.
  % The following shows a little of the typesetting power of LaTeX
  \begin{eqnarray}
    E &=& mc^2                              \\
    m &=& \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}}
  \end{eqnarray}
\end{document}

?>
<? \frac{a^2 - b^2}{a + b} = a - b ?>