deletions | additions       diff --git a/untitled.tex b/untitled.tex  index de0f4cb..e8f4080 100644  --- a/untitled.tex  +++ b/untitled.tex 
...
\section{Symbols (in \emph{math} mode)}  \subsection{The basics}  Math mode in LaTeX is defined by the dollar signs (\verb!$!), by the . square brackets.  \begin{tabular}{lll}  \emph{description} & \emph{command} & \emph{output}\\