I don’t understand why the group invented these new attributes and methods of action for dialogs that don’t seem relevant to anything else. Was there some silly patent to work around?

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esprehn an hour ago | parent [-]

As opposed to what? Not sure what the alternative you're picturing is.

	▲	hyperhello an hour ago \| parent [-]
		popovertarget="example-dialog" popovertargetaction="hide" It’s all binding. This is what JavaScript is for: dynamic content.