Struct Undo 

pub struct Undo { /* private fields */ }

What puts a scene back as it was before edits applied to it: each step undone, last first, the files they let go held again, and whether it was themed.

Implementations

impl Undo

pub fn undo(self, scene: &mut Scene, uses: &mut Uses)

Puts scene, whose files uses counts, back as it was before the edits this undoes — which must be the last applied to it.