[proposal] for RPN modifications

[Angus]

Tim, I would say we would like to have the cmd line behave as x-reg. Maybe that is unclear. If you enter some value You can directly swap it with the last stack item.
I don't understand why the stack depth is of importance. The last input is defined x, the second last y. No matter how many levels reside above that. So x IS the cmd line if you want. All most people want from rpn is to save keystrokes. So any unwanted enter would be gladly avoided.
I hope my explanation is well.