Return Stack

>R          n -- R:n        Pops PS and push to RS
2>R         x y -- R:x y    Equivalent to SWAP >R >R
R>          R:n -- n        Pops RS and push to PS
2R>         R:x y -- x y    Equivalent to R> R> SWAP
I           -- n            Copy RS TOS to PS
I'          -- n            Copy RS second item to PS
J           -- n            Copy RS third item to PS







