HP50g R/S key

[grsbanks]

The general idea with RPL is that you provide all the data that your program will need on the stack before running it, so no prompt is needed. Alternatively you can create and use menus in your program.

Either way round, no R/S key is needed.

CONT is used more for debugging. You stop a program's execution with HLT so you can look at the stack and whatever variable you need to examine and then resume execution with CONT.