[jessriedel]

Oh I see, thanks. For what it's worth, I would definitely include this example in the demo; it's basically the first thing I wanted to use. Given your pipeline, it makes sense that the \newcommand definitions themselves has to appear inside dollar signs (not just when they are used), but for people with a TeX background it's pretty unintuitive.

Also, you should definitely use \lange and \rangle in place of < and > for bra-ket notation :)