\documentclass{article}
\usepackage{geometry}
\usepackage{fancyhdr}
\usepackage{amsmath,amsthm,amssymb}
\usepackage{graphicx}
\usepackage{hyperref}
\usepackage{lipsum}

\begin{document}
This is some preamble text that you enter yourself.

Below is a command that will automatically generate seven paragraphs
of text that is commonly used for examples in this field.

\lipsum[1-7]
\end{document}

