Edit output curves

You can edit curves showing input vs. output for each color. You can edit only one curve at a time.

The eye icon under each color square in the channel selector () indicates whether the color curve is being displayed. (One curve might be behind another.)

Click a curve’s color square to bring a curve to the front.
Click anywhere on the curve to create an edit point, and then drag the edit point to change the shape of a curve.
Other edit points on the same curve remain fixed.