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Chrome 151 / Firefox Nightly add headingoffset/headingreset HTML attrs behind flag (#29931)
* feat: add compat data for headingoffset and headingreset attributes * Apply suggestions from code review Co-authored-by: Claas Augner <495429+caugner@users.noreply.github.com> * Add headingOffset and headingReset support to HTMLElement * Add notes for Chrome spec deviation * Apply suggestions from code review Co-authored-by: Claas Augner <495429+caugner@users.noreply.github.com> --------- Co-authored-by: Claas Augner <495429+caugner@users.noreply.github.com>
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‎api/HTMLElement.json‎

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}
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}
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},
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"headingOffset": {
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"__compat": {
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"spec_url": "https://html.spec.whatwg.org/multipage/dom.html#dom-headingoffset",
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"support": {
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"chrome": {
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"version_added": "151",
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"flags": [
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{
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"type": "preference",
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"name": "#enable-experimental-web-platform-features",
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"value_to_set": "Enabled"
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}
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],
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"impl_url": "https://crbug.com/333628468",
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"notes": "Implemented on the `Element` interface instead of the `HTMLElement` interface."
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},
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"chrome_android": "mirror",
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"edge": "mirror",
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"firefox": {
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"version_added": "preview",
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"flags": [
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{
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"type": "preference",
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"name": "dom.headingoffset.enabled",
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"value_to_set": "true"
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}
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],
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"impl_url": "https://bugzil.la/1974383"
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},
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"firefox_android": "mirror",
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"oculus": "mirror",
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"opera": "mirror",
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"opera_android": "mirror",
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"safari": {
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"version_added": false
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},
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"safari_ios": "mirror",
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"samsunginternet_android": "mirror",
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"webview_android": "mirror",
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"webview_ios": "mirror"
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},
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"status": {
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"experimental": true,
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"standard_track": true,
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"deprecated": false
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}
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}
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},
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"headingReset": {
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"__compat": {
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"spec_url": "https://html.spec.whatwg.org/multipage/dom.html#dom-headingreset",
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"support": {
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"chrome": {
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"version_added": "151",
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"flags": [
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{
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"type": "preference",
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"name": "#enable-experimental-web-platform-features",
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"value_to_set": "Enabled"
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}
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],
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"impl_url": "https://crbug.com/333628468",
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"notes": "Implemented on the `Element` interface instead of the `HTMLElement` interface."
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},
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"chrome_android": "mirror",
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"edge": "mirror",
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"firefox": {
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"version_added": "preview",
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"flags": [
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{
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"type": "preference",
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"name": "dom.headingoffset.enabled",
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"value_to_set": "true"
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}
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],
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"impl_url": "https://bugzil.la/1974383"
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},
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"firefox_android": "mirror",
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"oculus": "mirror",
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"opera": "mirror",
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"opera_android": "mirror",
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"safari": {
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"version_added": false
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},
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"safari_ios": "mirror",
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"samsunginternet_android": "mirror",
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"webview_android": "mirror",
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"webview_ios": "mirror"
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},
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"status": {
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"experimental": true,
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"standard_track": true,
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"deprecated": false
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}
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}
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},
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"hidden": {
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"__compat": {
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"mdn_url": "https://developer.mozilla.org/docs/Web/API/HTMLElement/hidden",

‎html/global_attributes.json‎

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}
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}
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},
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"headingoffset": {
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"__compat": {
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"spec_url": "https://html.spec.whatwg.org/multipage/sections.html#heading-levels-&-offsets",
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"support": {
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"chrome": {
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"version_added": "151",
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"flags": [
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{
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"type": "preference",
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"name": "#enable-experimental-web-platform-features",
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"value_to_set": "Enabled"
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}
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],
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"impl_url": "https://crbug.com/333628468"
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},
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"chrome_android": "mirror",
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"edge": "mirror",
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"firefox": {
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"version_added": "preview",
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"flags": [
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{
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"type": "preference",
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"name": "dom.headingoffset.enabled",
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"value_to_set": "true"
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}
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],
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"impl_url": "https://bugzil.la/1974383"
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},
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"firefox_android": "mirror",
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"oculus": "mirror",
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"opera": "mirror",
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"opera_android": "mirror",
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"safari": {
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"version_added": false
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},
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"safari_ios": "mirror",
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"samsunginternet_android": "mirror",
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"webview_android": "mirror",
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"webview_ios": "mirror"
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},
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"status": {
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"experimental": true,
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"standard_track": true,
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"deprecated": false
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}
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}
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},
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"headingreset": {
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"__compat": {
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"spec_url": "https://html.spec.whatwg.org/multipage/sections.html#heading-levels-&-offsets",
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"support": {
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"chrome": {
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"version_added": "151",
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"flags": [
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{
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"type": "preference",
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"name": "#enable-experimental-web-platform-features",
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"value_to_set": "Enabled"
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}
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],
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"impl_url": "https://crbug.com/333628468"
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},
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"chrome_android": "mirror",
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"edge": "mirror",
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"firefox": {
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"version_added": "preview",
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"flags": [
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{
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"type": "preference",
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"name": "dom.headingoffset.enabled",
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"value_to_set": "true"
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}
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],
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"impl_url": "https://bugzil.la/1974383"
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},
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"firefox_android": "mirror",
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"oculus": "mirror",
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"opera": "mirror",
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"opera_android": "mirror",
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"safari": {
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"version_added": false
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},
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"safari_ios": "mirror",
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"samsunginternet_android": "mirror",
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"webview_android": "mirror",
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"webview_ios": "mirror"
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},
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"status": {
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"experimental": true,
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"standard_track": true,
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"deprecated": false
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}
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}
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},
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"hidden": {
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"__compat": {
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"mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Reference/Global_attributes/hidden",

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