<button popovertarget="autopop">Auto</button>
<div id="autopop" popover="auto"><h1>Click anywhere to close me</h1></div>
<button popovertarget="manpop">Manual</button>
<div id="manpop" popover="manual"><h1>Ha ha! You can't close me!</h1><p>(unless you click the button again)</p></div>
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