New RPL: New Commands

[The Shadow]

Also on the wish list: A built-in list subtraction command. (In the sense of set subtraction, not element by element.) I can certainly code it myself in RPL, but the faster the better!

A command to eliminate duplicate elements in a list. (Actually, the reverse POS command you mentioned elsewhere would make this much easier to code.)

List union and intersection would be nice too, but aren't as essential.