Plus42 algebraic expressions update

[Vincent Weber]

Hi Thomas,
One thing I just thinking after reading Valentin's feature request document, as he highlights it: On the 35S, it is possible to interact with the stack, and store/recall stack registers within an equation. This is obviously not a feature of the 27S since it has no real stack exposed to the user, but this is a beat feature of the 35S. Do you plan to be able to address ST X etc ? You already used STO and RCL keys for L() and G(), so not sure how it would work out...

While I'm at it, the only other neat feature of the 35S I think would be nice to have is the complex number entry - at one go using dedicated i and theta keys rather than using 2 stack levels as with COMPLEX. I wonder how to do this while keeping the "don't mess with the original 42S" philosophie. Of course COMPLEX should stay, and as the keyboard is full, the i and theta keys maybe should be extra, i.e. off skin ?

Thanks and cheers,

Vincent