I said that I’ve yet to encounter a useful page in the docs. I didn’t say that no one has ever encounter a useful page in the docs. I’m sure the thing you linked is all kinds of useful, but I’ve no clue what it is or what it does so it isn’t useful to me (yet). The description of what is does “The Carousel display widget that gets animated by the carousel widget” is meaningless to me because I don’t have a clue what a carousel widget is. Maybe I get around to that mess at some point and my opinion of the docs might change, but for the moment they’re not really helpful to me.