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leprechaun · (This post was last modified: 05-04-2016 11:19 AM by leprechaun.)

The prime was made with two things in mind: Save time and development cost.
That is why an older codebase was used to form a conglomerate with the giac code. If in the 39 there is no undo - that is the reason why the prime lacks it.

Personally I pity other things, but it is an individual thing. (btw the HP advertising I read before purchasing my prime said that it is the perfect tool for science and engineering and not the perfect tool for students)

It seems that HP (or more precisely the development team - I would not necessarily include the managment) is working hard to make cas and home interact much more smoother. I don't know how much they can achieve or if it would be better to start working on a new calculator from scratch at some point (HP the bechnmark in calculator again! Imagine that)
If they can do it, they will introduce the undo. I am sure of that, but I am unsure if there were not more beneficial improvements for the calculator they should go for, first.