Swap X Y in RPN Mode

[Joe Horn]

(02-27-2023 04:09 PM)KeithB Wrote:  One nit: On the Prime you *can't* swap X and Y since there are no X and Y registers. Like forth, you have an arbitrary number of stack levels. On the Prime they are numbered. So you swap levels 1 and 2, not X and Y.

Aha, quite right! But what should we call it? "1<>2" looks goofy. Maybe just "SWAP" like in RPL? (Related note: Prime's RPN is NOT the same as RPL. Prime's RPN stack is limited to 128 objects, maximum.) Prime's keyboard calls it Unicode 292D, "⤭", but that's not easy to type on some systems, and I personally find it annoyingly unreadable.