I was browsing the recent commit history on the Github page for PrusaSlicer and saw a number references to a feature I’ve been looking forward to for a while. 
Can you guess what it is?
Modifier Meshes?
Nope, it’s had those for quite a while.
You did say “guess,” so that’s what I did. My second guess is the ability to modify individual layers.
Nope, this feature is much more basic.
Fix an error
Not quite, though you’re getting warmer. Auto-repairing mesh errors has been a feature in slic3r (and by extension PrusaSlicer) for quite some time. This feature has more to do with operator errors…
As the only coding I know is Base 10 I’m pretty proud of my answer.
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Undo/Redo?
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You got it! My favorite feature in any piece of software, the undo button!
I make a lot of mistakes, so I’ll be very happy when this feature is complete. I also won’t have to explain in the basics class that the trusty ctrl+z incantation has no effect on PrusaSlicer.
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