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\item You can use sectioning commands like \verb|\section{},\subsection{},\subsubsection{}| to add headings.\footnote{You can toggle heading numbering on/off from the article settings. This footnote is generated via \verb|\footnote{}|}  \end{enumerate}   There are t different  ways to present a mathematical expression--- expression in Latex---  \emph{inline}, \emph{equation}. \subsection{Inline mathematical expressions}