TI-83 calculator, "backspace"

Hello :D !

Question simple, but it could really prevent that feeling of horror when you type an equation and you do 2nde+prec instead of 2nd+resol, and you have to start over ;)

once you’ve used the "prec" option on a TI-83, is there a function to undo and go back to the next calculation?

Thanks :D

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