Local History is hidden in the File Menu and does not have a shortcut. It is one of the most useful features in the Jetbrains editors, so I set Alt+Z as a keybo

Local History is hidden in the File Menu and does not have a shortcut. It is one of the most useful features in the Jetbrains editors, so I set Alt+Z as a keyboard shortcut (because Ctrl+Z is undo), which after a few years of using it still seems like a good idea. One point that is missing from your description is that it always shows the previous state in the diff view, which also feels really natural to use (I only sometimes whish the diff markers were more distinguishable from the inspection and ToDo markers).