Hi! First of all, I just wanted to say... wow. Pyqtgraph is simply amazing in every sense of the word. My manager is absolutely loving what pyqtgraph can do! However he was wondering if there's a way for users to have a "back" or "previous" button, one that undoes the action just performed. I'm using an ImageView to analyze data, and if I zoom in, the back button (and in the future a forward button) would take me back to the original view I had. I found out that we can get the current viewbox's state and apply that state to the viewbox again, but I'm a little confused on how to programmatically store that state in the first place. Maybe I could store them in a list of states? But how I would I update that list? Any help would be greatly appreciated.
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