Invert mouse?

Probably stupid question, where can I invert the mouse? Can't find it under the mouse tab.
(updated 2012-08-01 23:09:27)

m_pitch needs to be inverted. Whatever it is, set it to -that.

That's in the console, which you open with ~.

Do I need to do this every time I start the game?

no, just once

m_pitch -0.022 is the opposite of what it's set to normally (0.022).

Thanks for asking that question. I just started playing literally today and got really bummed out when I couldn't find the invert mouse option, I knew it had to be in a config file or something. I've played with my mouse inverted since early early on in the glory days of Quake 1 :P

PS[edit] That's no stupid question either :) There are a lot of invert players out there but very rare to run by because we're all scattered through out different games lol.. Or so I think my theory is correct haha
(updated 2012-08-07 00:25:47)

Just to set the record straight:
Pitch inversion is when you move the mouse up to move the camera down.
It is not inverted if mouse up makes the camera move up. That is default.