RPN Lock Stack

[KevinMurphy]

I'n trying to work in RPN but occasionally I mess up number crunching which causes stacks that weren't a part of the problem to be changed. Is there a quick to lock a stack or number so I don't change its value besides assigning the value to a variable?

Say I had the number 6.23 in a stack. Could I lock this number or move it to another place so the stack won't change values because I am done with that part of the problem?

[David Hayden]

There's no way that I'm aware of. Variables are intended to solve this problem, so just store it in a var.