\documentclass[12pt,a4paper]{article}  % Your input file must contain these two lines 
\usepackage{color}
\usepackage{parskip}
\begin{document}
Words are separated by one or more spaces.  Paragraphs 
   separated by one or more blank lines.  The output 
is not affected by adding extra
spaces or extra blank lines to the input file.

Double quotes are typed like this: ``quoted text''.
Single quotes are typed like this: `single-quoted text'.

Emphasized text is typed like this: \emph{this is emphasized}.
Bold       text is typed like this: \textbf{this is bold}.
Red text is typed like this: \textcolor{red}{this is red text}.

\subsection{A Warning or Two}  % This command makes a subsection title.

If you get too much space after a mid-sentence 
period---abbreviations like etc.\ are the common culprits)---then 
type a backslash followed by
a space after the period, as in this sentence.

Remember, don't type the 10 special characters (such as dollar sign and
backslash) except as directed!  The following seven are printed by
typing a backslash in front of them:  \$  \&  \#  \%  \_  \{  and  \}.  
The manual tells how to make other symbols.
\end{document}