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\documentclass[11pt,fleqn]{article}
\usepackage[latin1]{inputenc}
\usepackage{enumerate}
\usepackage[hang,flushmargin]{footmisc}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{amsthm}
\theoremstyle{definition}
\newtheorem{theorem}{Theorem}
\newtheorem{lemma}[theorem]{Lemma}
\newtheorem{corollary}[theorem]{Corollary}
\newtheorem{proposition}[theorem]{Proposition}
\newtheorem{definition}[theorem]{Definition}
\newtheorem{example}[theorem]{Example}
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\begin{document}
\begin{center}
{\Huge
\LaTeX{} class 1
}\\
Clive Newstead, Monday 10th July 2017
\end{center}
\section{Text mode}
Typing regular text in \LaTeX{} is very simple: you just type it! All the formatting is done for you. Some parts of it take a little bit of getting used to, such as `quote marks'. To start a new paragraph, just leave a blank line and start typing.
Just like this!
\subsection{Basic formatting}
Text can be \textbf{bold} or \textit{italic} or \underline{underlined} or \texttt{monospace} or \textsf{sans-serif}.
By default it is aligned to the left.
\begin{center}
It can be aligned to the center.
\end{center}
\begin{flushright}
It can also be aligned to the right.
\end{flushright}
\subsection{Sections and subsections}
A good mathematical paper is divided into sections, which often contain subsections and, in many cases, `subsubsections'. These are numbered by default, but you can remove the numbering using an asterisk (\texttt{*}).
\section*{Section with no enumeration}
For example, this section has no enumeration.
\subsection*{Subsection with no enumeration}
Neither does this subsection.
\section{New section}
But this section does!
\subsection{New subsection}
And so does this subsection!
Next time, we'll learn about typesetting mathematical notation using \textit{math mode}.
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