HP 50g - How to log and edit RPN expression entry?

[BruceH]

I'm struggling to understand what your problem actually is.

If you want to enter as algebraic, evaluate as algebraic and go back and edit mistakes or changes on an algebraic expression then put the 50G into algebraic mode and you're good to go.

If you want to use RPL but still enter algebraics then you need to use single tick quotes in RPL mode.

If you want to do calculations in RPL and somehow maintain a history of what was typed so that you can go back and edit it, then that is not possible on the 50G. How would the calculator know when you started a calculation so it would know how far back to let you go? Or would you want it to keep a record all the way back to when you turned it on?

If you want to do something else, then I've not understood and a specific example might makes things clearer.