INTRODUCTION This is a LaTeX block and you can use commands such as \textbf{} to BOLDFACE TEXT. A few tips 1. Click anywhere outside of this LaTeX block to render it. 2. Hover on Preview to see a Preview of the rendered content. 3. Do not paste an entire LaTeX article here. Instead import documents from your homepage. 4. Only type LaTeX content in here, i.e. everything you would write after . 5. Do not type preamble, frontmatter, macros or figures. 6. To add macros (newcommands) and packages, click Settings → Edit Macros 7. Use the Insert Figure button to insert images (and data). 8. Use math mode for equations, e.g. $\mathcal L_{EM}=-\frac14F^{\mu\nu}F_{\mu\nu}$. 9. Try the citation tool (click cite) to find and add citations, or use \cite{}. 10. To insert more LaTeX blocks click Insert → LaTeX. 11. You can use sectioning commands like \section{},\subsection{},\subsubsection{} to add headings.[1] This footnote is generated via \footnote{}. [1] You can toggle heading numbering on/off from the article settings.