I also just had an idea and fooled around a bit.. Seems I can acheive (somewhat) this by rebuilding my curve "with points" and adding enough points so that the "4 point" movement can fall outside of the "lock point", although it also brings all of my movement in this manner down to that finite level... Maybe instead of having the show the second set of on curve points option, there could be some type of mechanism to determine how many points "surrounding the on curve pick" will be used in either direction??

Although now it sounds like I am getting into the UI..:o

Anyway, your input will be appreciated.. And let me know if I havnt been clear. I can post some visuals...

Burr