A minor wish:-)
Script numeric entry keypad restricted to non-negative numbers.

A minor question:
Is there a method to restrict keyboard entry of numbers to be greater than the previous entry of a different parameter value.
Example, Dupin Cyclide had a cRadius which can be any positive value. The aRadius has a positive value which must be greater than the cRadius.
I could replace the aRadius entry with delta_aRadius = aRadius - cRadius.

- Brian