Animating with Keyframes 198 Figure 7.41. Progressive repeats the same curve, but each time it starts from the new ending value. Generating keyframes By default, changing the extrapolation method creates a curve that contains hidden keyframes that you can't manipulate individually (you can, however, select and move the entire curve up or down). Ever flexible, Motion allows you to generate keyframes on the extrapolated curve so that you can make adjustments to individual keyframes. You can even select the range of the extrapolated curve for which you want to generate the keyframes. To generate keyframes on an extrapolated curve: 1. 2. For the extrapolated parameter, click the Animation menu and in the fly-out menu for either Before First Keyframe or After Last Keyframe, choose Generate Keyframes. In the dialog that appears, use the slider to choose the number of cycles for which you want keyframes, and then click OK. Keyframes are now available along the extrapolated curve for the number of cycles you selected