In reply to Justin Tadlock.

There's surely one of the best use of the plugin, Justin, but another one is "for testing". Testing a new plugin adding a feature to that specific post, or testing a new layout of the post (regardless of the page builder), or simply rearranging the content until you're satisfied with it. Rather than messing up the real post, I do prefer to first clone it and play around, changing several times until it fits what I want, and only then apply the final result to the original post. Not everybody has the privilege of a staging environment ;-)