[Hacktivist]

If OneNote is anything like Word you can use LaTeX notation once you are inside an equation environment (Alt + =).

For example in Word typing Alt + = \int^1_2 \sum^x_(x+1) \ge \sqrt(25)

Would produce exactly what you would get in LaTeX.

You can even copy/paste between applications that support MathML.

[koenigdavidmj]

Sweet; I haven't yet had an opportunity to use the new equation editor. That's exactly what I want; though.