The process to be used when the Auto button is clicked to make modifications to the existing linear motion type in the cam profile.
Replace
When you click the Auto button on the toolbar, the design utility will try to replace the linear segments with some type of motion segment: H1-6 type or C1-6 type. The cam profile will retain the same number of profile zones.
Replace and Add
Use when you want to keep the linear motion characteristics. The design utility will try to replace each linear segment with three other segments. The middle segment of these three will be a linear segment. The first and third will be of the Cycloidal (1-6) or Harmonic (1-6) type of motion.