Reply to Increase the range of the pitch fader?

I was watching a video once (i believe it was a flashflooder video) and he explained a way that you can move the pitch fader without it doing anything. Like if you were slowly adjusting the tempo and you maxed out your fader, you could hold some button or something, and move the fader all the way back, and continue slowly adjusting. I can't figure out which button it is, and I can't find the video that explained it. Anyone know what I'm looking for here?

Thanks.