I like very much this tool. I plan to use to develop successive studies with 3,5,7,9 values. What is needed for this is to be able to get a value-number for each of the separation points. Thus, I'll start with three values, write down the values for the 3 separation points, then move to 5 values and first position the three points the in same values as before, and move the two new separation points to get the preferred effect. Same with 7 or 9. Hope this is clear. Otherwise let me know.