[9] Popover API (Explainer) | Open UI, https://open-ui.org/components/popover.research.explainer/
<popup>
[3] New feature proposal: <popup> element · Issue #6349 · whatwg/html · GitHub, https://github.com/whatwg/html/issues/6349
[12] MSEdgeExplainers/Popup/explainer.md at main · MicrosoftEdge/MSEdgeExplainers · GitHub, https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/main/Popup/explainer.md
[6] [Popup] Naming for the new popup element · Issue #296 · openui/open-ui · GitHub, https://github.com/openui/open-ui/issues/296
[5] [Popup] Name is ambiguous · Issue #438 · MicrosoftEdge/MSEdgeExplainers · GitHub, https://github.com/MicrosoftEdge/MSEdgeExplainers/issues/438
popover=""
[2] New feature proposal: Popover API · Issue #7785 · whatwg/html · GitHub, https://github.com/whatwg/html/issues/7785
[4] The Popover API · Issue #74 · WebKit/standards-positions · GitHub, https://github.com/WebKit/standards-positions/issues/74
[7] The Popover API (previously Popup) · Issue #743 · w3ctag/design-reviews · GitHub, https://github.com/w3ctag/design-reviews/issues/743
[1] News from WWDC23: WebKit Features in Safari 17 beta | WebKit, https://webkit.org/blog/14205/news-from-wwdc23-webkit-features-in-safari-17-beta/
[8] Questions/issues with popover spec · Issue #9036 · whatwg/html · GitHub, https://github.com/whatwg/html/issues/9036
popover=hint
[10] Popover=hint (Explainer) | Open UI, https://open-ui.org/components/popover-hint.research.explainer/
[11] Add popover=hint by josepharhar · Pull Request #9778 · whatwg/html · GitHub, https://github.com/whatwg/html/pull/9778