I'd like to have a character move a limb to three positions in a sequence-- let's say waist high at 0, head high at 30 and back to waist hight at 60. Perhaps I add a wave at 45. Poser 11 makes me crazy because it adds sine curves between the key frames, especially in complex sequences, so the figure is flailing or bending in ways I never intended. How do I tell Poser not to 'invent' curves above or below the keyframe I indicated?