Voodoopad has a "render math" command which renders LaTeX. All the math symbols I have tried work fine. However, I can't seem to get bras and kets working - instead of rendering it simply pastes in a copy of the last thing i rendered.
I do have the braket package. I couldn't get LaTeXiT to do bra/kets, until i figured how to add packages under preferences>templates. How do I get Voodoopad to invoke the braket package?