% Introductory Workshop to LaTeX: Worksheet Exercise 4
\documentclass[11pt,a4paper]{article}
\usepackage{amsmath}

\author{Your Name}
\title{My Wonderful Paper}

\begin{document}
\maketitle
\tableofcontents

\begin{abstract}
These are some simple demonstrations of \LaTeX{} features.
\end{abstract}

\section{Introduction}\label{sec:intro}
Hello World!
This is not a new line nor a new paragraph.

This is a new paragraph.

\section{Formatting}\label{sec:formatting}

\begin{itemize}
\item Font styles:
	\begin{enumerate}
	\item \textbf{bold}
	\item \emph{italic}
	\item \underline{underlined}\footnote{but considered bad taste}
	\end{enumerate}
\item Font families: \textrm{roman or serif}, \textsf{sans serif}, \texttt{teletype}
\item Font sizes: {\large large} text, {\small small} text, etc.
\item \verb|verbatim_text   like this| vs verbatim\_text   like this
\item R{\'e}sum{\'e}, ch{\^a}teau, El Ni{\~n}o
\end{itemize}

\subsection{New Subsection}\label{sec:new}
Hi!

\subsection{This is a Subsection}\label{sec:subtest}

Blah blah. 

Start a new paragraph as shown in section \ref{sec:intro}. The current subsection is numbered \ref{sec:subtest}  and we are now on page \pageref{sec:subtest}. 

\section{Some Maths}

\eqref{eq:golden:fib} relates the golden ratio and the Fibonacci series.  Recall that the golden ratio, $\phi = \frac{1}{2} (1 + \sqrt{5})$.

\begin{equation}\label{eq:golden:fib}
\phi = 1 + 
	\sum^{\infty} _{n=1} 
	\frac{ (-1)^{n+1} }{ F_n F_{n+1} }
\end{equation}
\end{document}