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Here, I wish to motivate bilinear system identification techniques for 3\ts{rd} order spectroscopy. \[ \frac{\hbar^2}{2m}\nabla^2\Psi + V(\mathbf{r})\Psi  = -i\hbar  \pd{\Psi}{t} \]  \textit{Oh, an empty article!}   You can get started by \textbf{double clicking} this text block and begin editing. You can also click the \textbf{Insert} button below to add new block elements. Or you can \textbf{drag and drop an image} right onto this text. Happy writing!