I love the effect on undo/redo. So many times in all kinds of editors do I cycle through undo/redo in a game of spot the difference just to find where did I mad

I love the effect on undo/redo. So many times in all kinds of editors do I cycle through undo/redo in a game of spot the difference just to find where did I made a change. Now I'm off to see how to implement this in my code editor.