Popping preconceived popover ponderings

But I decided to finally get this post in a publishable state because I still see people asking questions about popover. Like, what is it? How does it differ from a dialog (modal or non)? Why doesn’t it do this one thing that I need it to? I’m not going to answer every question about popover. But I should get back into the habit of writing this stuff down once and pointing people to it, rather than providing repetitive one-off answers whenever I happen across someone asking about it.Here we (finally) go.

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