From 71600c4d93cf74ef46d84469628496d2d30ba2f7 Mon Sep 17 00:00:00 2001
From: Reilly Grant <reillyg@google.com>
Date: Wed, 12 Feb 2025 01:18:57 +0000
Subject: [PATCH] Process: Set CRS comment deadline to 2025-03-15

SHA: 5adbbea4a21d004927f33e40ff4d5a70cc85de73
Reason: push, by reillyeon

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 index.html | 1890 +++++++++++++++++++++++++++++++++-------------------
 1 file changed, 1202 insertions(+), 688 deletions(-)

diff --git a/index.html b/index.html
index 2f5961b..5366086 100644
--- a/index.html
+++ b/index.html
@@ -5,9 +5,11 @@
   <title>Device Orientation and Motion</title>
   <meta content="ED" name="w3c-status">
   <link href="https://www.w3.org/StyleSheets/TR/2021/W3C-ED" rel="stylesheet">
-  <meta content="Bikeshed version 82ce88815, updated Thu Sep 7 16:33:55 2023 -0700" name="generator">
+  <meta content="Bikeshed version 97a1608be, updated Mon Feb 3 16:09:34 2025 -0800" name="generator">
   <link href="https://www.w3.org/TR/orientation-event/" rel="canonical">
-  <meta content="179ad03325513c0b3a6e1ce40c9720a4bdfe0c93" name="document-revision">
+  <meta content="5adbbea4a21d004927f33e40ff4d5a70cc85de73" name="revision">
+  <meta content="dark light" name="color-scheme">
+  <link href="https://www.w3.org/StyleSheets/TR/2021/dark.css" media="(prefers-color-scheme: dark)" rel="stylesheet" type="text/css">
 <style>/* Boilerplate: style-autolinks */
 .css.css, .property.property, .descriptor.descriptor {
     color: var(--a-normal-text);
@@ -79,7 +81,6 @@
 }
 </style>
 <style>/* Boilerplate: style-colors */
-
 /* Any --*-text not paired with a --*-bg is assumed to have a transparent bg */
 :root {
     color-scheme: light dark;
@@ -333,11 +334,15 @@
 :root {
     --dfnpanel-bg: #ddd;
     --dfnpanel-text: var(--text);
+    --dfnpanel-target-bg: #ffc;
+    --dfnpanel-target-outline: orange;
 }
 @media (prefers-color-scheme: dark) {
     :root {
         --dfnpanel-bg: #222;
         --dfnpanel-text: var(--text);
+        --dfnpanel-target-bg: #333;
+        --dfnpanel-target-outline: silver;
     }
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 .dfn-panel {
@@ -360,11 +365,13 @@
 .dfn-panel > b { display: block; }
 .dfn-panel a { color: var(--dfnpanel-text); }
 .dfn-panel a:not(:hover) { text-decoration: none !important; border-bottom: none !important; }
+.dfn-panel a:focus {
+    outline: 5px auto Highlight;
+    outline: 5px auto -webkit-focus-ring-color;
+}
 .dfn-panel > b + b { margin-top: 0.25em; }
 .dfn-panel ul { padding: 0 0 0 1em; list-style: none; }
 .dfn-panel li a {
-    white-space: pre;
-    display: inline-block;
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     text-overflow: ellipsis;
@@ -373,67 +380,84 @@
 .dfn-panel.activated {
     display: inline-block;
     position: fixed;
-    left: .5em;
+    left: 8px;
     bottom: 2em;
     margin: 0 auto;
     max-width: calc(100vw - 1.5em - .4em - .5em);
     max-height: 30vh;
+    transition: left 1s ease-out, bottom 1s ease-out;
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-.dfn-paneled[role="button"] { cursor: pointer; }
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-<style>/* Boilerplate: style-dfn-panel */
-:root {
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+.dfn-panel .link-item:hover {
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 }
-@media (prefers-color-scheme: dark) {
-    :root {
-        --dfnpanel-bg: #222;
-        --dfnpanel-text: var(--text);
-    }
+.dfn-panel .link-item .copy-icon {
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 }
-.dfn-panel {
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+.dfn-panel .link-item:hover .copy-icon,
+.dfn-panel .link-item .copy-icon:focus {
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 }
-.dfn-panel:not(.on) { display: none; }
-.dfn-panel * { margin: 0; padding: 0; text-indent: 0; }
-.dfn-panel > b { display: block; }
-.dfn-panel a { color: var(--dfnpanel-text); }
-.dfn-panel a:not(:hover) { text-decoration: none !important; border-bottom: none !important; }
-.dfn-panel > b + b { margin-top: 0.25em; }
-.dfn-panel ul { padding: 0 0 0 1em; list-style: none; }
-.dfn-panel li a {
-    white-space: pre;
+
+.dfn-panel .copy-icon {
     display: inline-block;
-    max-width: calc(300px - 1.5em - 1em);
-    overflow: hidden;
-    text-overflow: ellipsis;
+    margin-right: 0.5em;
+    width: 0.85em;
+    height: 1em;
+    border-radius: 3px;
+    background-color: #ccc;
+    cursor: pointer;
 }
 
-.dfn-panel.activated {
-    display: inline-block;
-    position: fixed;
-    left: .5em;
-    bottom: 2em;
-    margin: 0 auto;
-    max-width: calc(100vw - 1.5em - .4em - .5em);
-    max-height: 30vh;
+.dfn-panel .copy-icon .icon {
+    width: 100%;
+    height: 100%;
+    background-color: #fff;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    position: relative;
+}
+
+.dfn-panel .copy-icon .icon::before {
+    content: "";
+    position: absolute;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    border: 1px solid black;
+    background-color: #ccc;
+    opacity: 0.25;
+    transform: translate(3px, -3px);
+}
+
+.dfn-panel .copy-icon:active .icon::before {
+    opacity: 1;
 }
 
-.dfn-paneled[role="button"] { cursor: pointer; }
+.dfn-paneled[role="button"] { cursor: help; }
+
+.highlighted {
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+}
+
+@keyframes target-fade {
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+        background-color: var(--dfnpanel-target-bg);
+        outline: 5px solid var(--dfnpanel-target-outline);
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+        background-color: transparent;
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+}
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+<style>/* Boilerplate: style-idl-highlighting */
+pre.idl.highlight {
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+}
 </style>
 <style>/* Boilerplate: style-issues */
 a[href].issue-return {
@@ -459,12 +483,16 @@
 	--mdn-bg: #EEE;
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 	--mdn-nosupport-text: #ccc;
+	--mdn-pass: green;
+	--mdn-fail: red;
 }
 @media (prefers-color-scheme: dark) {
 	:root {
 		--mdn-bg: #222;
 		--mdn-shadow: #444;
 		--mdn-nosupport-text: #666;
+		--mdn-pass: #690;
+		--mdn-fail: #d22;
 	}
 }
 .mdn-anno {
@@ -507,11 +535,11 @@
 	display: block;
 }
 .mdn-anno > summary > .less-than-two-engines-flag {
-	color: red;
+	color: var(--mdn-fail);
 	padding-right: 2px;
 }
 .mdn-anno > summary > .all-engines-flag {
-	color: green;
+	color: var(--mdn-pass);
 	padding-right: 2px;
 }
 .mdn-anno > summary > span {
@@ -532,10 +560,10 @@
 	padding-top: 2px;
 }
 .mdn-anno > .feature > .less-than-two-engines-text {
-	color: red;
+	color: var(--mdn-fail);
 }
 .mdn-anno > .feature > .all-engines-text {
-	color: green;
+	color: var(--mdn-pass);
 }
 .mdn-anno > .feature > p {
 	font-size: .75em;
@@ -628,7 +656,7 @@
 	background-image: url(https://resources.whatwg.org/browser-logos/safari-ios.svg);
 }
 .mdn-anno > .feature > .support > .nodejs::before {
-	background-image: url(https://nodejs.org/static/images/favicons/favicon.ico);
+	background-image: url(https://nodejs.org/favicon.ico);
 }
 .mdn-anno > .feature > .support > .opera_android::before {
 	background-image: url(https://resources.whatwg.org/browser-logos/opera.svg);
@@ -674,8 +702,40 @@
 	margin: -40px 0 0 0;
 }
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+<style>/* Boilerplate: style-ref-hints */
+:root {
+    --ref-hint-bg: #ddd;
+    --ref-hint-text: var(--text);
+}
+@media (prefers-color-scheme: dark) {
+    :root {
+        --ref-hint-bg: #222;
+        --ref-hint-text: var(--text);
+    }
+}
+
+.ref-hint {
+    display: inline-block;
+    position: absolute;
+    z-index: 35;
+    width: 20em;
+    width: 300px;
+    height: auto;
+    max-height: 500px;
+    overflow: auto;
+    padding: 0.5em 0.5em;
+    font: small Helvetica Neue, sans-serif, Droid Sans Fallback;
+    background: var(--ref-hint-bg);
+    color: var(--ref-hint-text);
+    border: outset 0.2em;
+    white-space: normal; /* in case it's moved into a pre */
+}
+
+.ref-hint * { margin: 0; padding: 0; text-indent: 0; }
 
+.ref-hint ul { padding: 0 0 0 1em; list-style: none; }
+</style>
+<style>/* Boilerplate: style-selflinks */
 :root {
     --selflink-text: white;
     --selflink-bg: gray;
@@ -735,14 +795,6 @@
 dfn > a.self-link::before      { content: "#"; }
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 <style>/* Boilerplate: style-syntax-highlighting */
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 code.highlight { padding: .1em; border-radius: .3em; }
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@@ -800,7 +852,6 @@
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@@ -875,21 +926,43 @@
 4 = lab(85,5,15)
 5 = lab(85,-10,-50)
 6 = lab(85,35,-15)
+
+For darkmode:
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+4 = oklab(50% -12%  -64%)
+5 = oklab(50%  44%  -19%)  
+6 = oklab(50% 102%   38%)
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-var.selected6 { background-color: #FFBCF2; box-shadow: 0 0 0 2px #FFBCF2; }
+
+[data-algorithm] var { cursor: pointer; }
+var[data-var-color] { background-color: var(--var-bg); box-shadow: 0 0 0 2px var(--var-bg); }
+
+var[data-var-color] { --var-bg: #F4D200; }
+var[data-var-color="1"] { --var-bg: #FF87A2; }
+var[data-var-color="2"] { --var-bg: #96E885; }
+var[data-var-color="3"] { --var-bg: #3EEED2; }
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+var[data-var-color="5"] { --var-bg: #82DDFF; }
+var[data-var-color="6"] { --var-vg: #FFBCF2; }
+
+@media (prefers-color-scheme: dark) {
+	var[data-var-color] { --var-bg: #bc1a00; }
+	var[data-var-color="1"] { --var-bg: #007f00; }
+	var[data-var-color="2"] { --var-bg: #008698; }
+	var[data-var-color="3"] { --var-bg: #7f5b2b; }
+	var[data-var-color="4"] { --var-bg: #004df3; }
+	var[data-var-color="5"] { --var-bg: #a1248a; }
+	var[data-var-color="6"] { --var-vg: #ff0000; }
+}
 </style>
  <body class="h-entry">
   <div class="head">
    <p data-fill-with="logo"><a class="logo" href="https://www.w3.org/"> <img alt="W3C" height="48" src="https://www.w3.org/StyleSheets/TR/2021/logos/W3C" width="72"> </a> </p>
    <h1 class="p-name no-ref" id="title">Device Orientation and Motion</h1>
-   <p id="w3c-state"><a href="https://www.w3.org/standards/types#ED">Editor’s Draft</a>, <time class="dt-updated" datetime="2024-10-24">24 October 2024</time></p>
+   <p id="w3c-state"><a href="https://www.w3.org/standards/types/#ED">Editor’s Draft</a>, <time class="dt-updated" datetime="2025-02-12">12 February 2025</time></p>
    <details open>
     <summary>More details about this document</summary>
     <div data-fill-with="spec-metadata">
@@ -916,7 +989,7 @@ <h1 class="p-name no-ref" id="title">Device Orientation and Motion</h1>
     </div>
    </details>
    <div data-fill-with="warning"></div>
-   <p class="copyright" data-fill-with="copyright"><a href="https://www.w3.org/policies/#copyright">Copyright</a> © 2024 <a href="https://www.w3.org/">World Wide Web Consortium</a>. <abbr title="World Wide Web Consortium">W3C</abbr><sup>®</sup> <a href="https://www.w3.org/policies/#Legal_Disclaimer">liability</a>, <a href="https://www.w3.org/policies/#W3C_Trademarks">trademark</a> and <a href="https://www.w3.org/copyright/software-license/" rel="license" title="W3C Software and Document License">permissive document license</a> rules apply. </p>
+   <p class="copyright" data-fill-with="copyright"><a href="https://www.w3.org/policies/#copyright">Copyright</a> © 2025 <a href="https://www.w3.org/">World Wide Web Consortium</a>. <abbr title="World Wide Web Consortium">W3C</abbr><sup>®</sup> <a href="https://www.w3.org/policies/#Legal_Disclaimer">liability</a>, <a href="https://www.w3.org/policies/#W3C_Trademarks">trademark</a> and <a href="https://www.w3.org/copyright/software-license/" rel="license" title="W3C Software and Document License">permissive document license</a> rules apply. </p>
    <hr title="Separator for header">
   </div>
   <div class="p-summary" data-fill-with="abstract">
@@ -944,7 +1017,7 @@ <h2 class="no-num no-toc no-ref heading settled" id="sotd"><span class="content"
   or <a href="mailto:public-webapps@w3.org">public-webapps@w3.org</a> (<a href="mailto:public-webapps-request@w3.org?subject=subscribe">subscribe</a>, <a href="https://lists.w3.org/Archives/Public/public-webapps/">archives</a>). </p>
    <p> This document is governed by the <a href="https://www.w3.org/policies/process/20231103/" id="w3c_process_revision">03 November 2023 W3C Process Document</a>. </p>
    <p></p>
-   <p>New features since publication as a <a href="https://www.w3.org/TR/2016/CR-orientation-event-20160818/">Candidate Recommendation</a> include integration of Permissions Policy and API, which now requires explicit user consent through <code class="idl"><a data-link-type="idl" href="#dom-deviceorientationevent-requestpermission" id="ref-for-dom-deviceorientationevent-requestpermission">requestPermission()</a></code> for accessing device orientation data. Updates have been made to the coordinate system explanations and precision requirements to mitigate passive fingerprinting risks. The introduction of the <a class="idl-code" data-link-type="event" href="#def-deviceorientationabsolute" id="ref-for-def-deviceorientationabsolute">deviceorientationabsolute</a> event enhances applications requiring absolute orientation data (marked <a data-link-type="dfn" href="https://www.w3.org/Consortium/Process/#at-risk" id="ref-for-at-risk">at risk</a>). Interfaces are now only available in <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#secure-context" id="ref-for-secure-context">secure contexts</a>, and security and privacy considerations have been made normative. The specification now also provides a means to <a href="#automation">automate testing</a> of this API (marked <a data-link-type="dfn" href="https://www.w3.org/Consortium/Process/#at-risk" id="ref-for-at-risk①">at risk</a>). See <a href="#changes">§ 10 Changes</a> section for more information.</p>
+   <p>New features since publication as a <a href="https://www.w3.org/TR/2016/CR-orientation-event-20160818/">Candidate Recommendation</a> include integration of Permissions Policy and API, which now requires explicit user consent through <code class="idl"><a data-link-type="idl" href="#dom-deviceorientationevent-requestpermission" id="ref-for-dom-deviceorientationevent-requestpermission">requestPermission()</a></code> for accessing device orientation data. Updates have been made to the coordinate system explanations and precision requirements to mitigate passive fingerprinting risks. The introduction of the <a class="idl-code" data-link-type="event" href="#def-deviceorientationabsolute" id="ref-for-def-deviceorientationabsolute">deviceorientationabsolute</a> event enhances applications requiring absolute orientation data (marked <a data-link-type="dfn" href="https://www.w3.org/policies/process/#at-risk" id="ref-for-at-risk">at risk</a>). Interfaces are now only available in <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#secure-context" id="ref-for-secure-context">secure contexts</a>, and security and privacy considerations have been made normative. The specification now also provides a means to <a href="#automation">automate testing</a> of this API (marked <a data-link-type="dfn" href="https://www.w3.org/policies/process/#at-risk" id="ref-for-at-risk①">at risk</a>). See <a href="#changes">§ 10 Changes</a> section for more information.</p>
   </div>
   <div data-fill-with="at-risk"></div>
   <nav data-fill-with="table-of-contents" id="toc">
@@ -1169,7 +1242,7 @@ <h3 class="heading settled" data-level="3.2" id="device-motion-model"><span clas
    <p>The <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="rotation-rate">rotation rate</dfn> measures the rate at which the device rotates about a specified axis in the <a data-link-type="dfn" href="https://w3c.github.io/accelerometer/#device-coordinate-system" id="ref-for-device-coordinate-system②">device coordinate system</a>. As with device orientation, rotations must use the right-hand convention, such that positive rotation around an axis is clockwise when viewed along the positive direction of the axis. The <a data-link-type="dfn" href="#rotation-rate" id="ref-for-rotation-rate">rotation rate</a> is measured in degrees per second (deg/s).</p>
    <p class="note" role="note"><span class="marker">Note:</span> <a data-link-type="biblio" href="#biblio-motion-sensors" title="Motion Sensors Explainer">[MOTION-SENSORS]</a> and <a data-link-type="biblio" href="#biblio-gyroscope" title="Gyroscope">[GYROSCOPE]</a> both contain a more detailed discussion of gyroscopes, rotation rates and measurements.</p>
    <h2 class="heading settled" data-level="4" id="permissions-integration"><span class="secno">4. </span><span class="content">Permissions</span><a class="self-link" href="#permissions-integration"></a></h2>
-   <div class="issue" id="issue-77fe9a79"><a class="self-link" href="#issue-77fe9a79"></a> This integration is <a data-link-type="dfn" href="https://www.w3.org/Consortium/Process/#at-risk" id="ref-for-at-risk②">at risk</a> due to the low pass rate of the <a href="https://wpt.fyi/results/orientation-event/motion/requestPermission.https.window.html"><code>DeviceMotionEvent.requestPermission()</code></a> and <a href="https://wpt.fyi/results/orientation-event/orientation/requestPermission.https.window.html"><code>DeviceOrientationEvent.requestPermission()</code></a> tests. </div>
+   <div class="issue" id="issue-77fe9a79"><a class="self-link" href="#issue-77fe9a79"></a> This integration is <a data-link-type="dfn" href="https://www.w3.org/policies/process/#at-risk" id="ref-for-at-risk②">at risk</a> due to the low pass rate of the <a href="https://wpt.fyi/results/orientation-event/motion/requestPermission.https.window.html"><code>DeviceMotionEvent.requestPermission()</code></a> and <a href="https://wpt.fyi/results/orientation-event/orientation/requestPermission.https.window.html"><code>DeviceOrientationEvent.requestPermission()</code></a> tests. </div>
    <p>This specification is a <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-powerful-feature" id="ref-for-dfn-powerful-feature">powerful feature</a> and, as such, it defines the following <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permission" id="ref-for-dfn-permission">permissions</a> which are <a data-link-type="dfn" href="https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature" id="ref-for-policy-controlled-feature">policy-controlled features</a> with the given <a data-link-type="dfn" href="https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature-default-allowlist" id="ref-for-policy-controlled-feature-default-allowlist">default allowlists</a>:</p>
    <ul>
     <li data-md>
@@ -1200,20 +1273,20 @@ <h3 class="heading settled" data-level="6.1" id="deviceorientation"><span class=
 
 [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed"><c- g>Exposed</c-></a>=<c- n>Window</c->, <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext①"><c- g>SecureContext</c-></a>]
 <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="deviceorientationevent"><code><c- g>DeviceOrientationEvent</c-></code></dfn> : <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#event" id="ref-for-event"><c- n>Event</c-></a> {
-    <dfn class="idl-code" data-dfn-for="DeviceOrientationEvent" data-dfn-type="constructor" data-export data-lt="DeviceOrientationEvent(type, eventInitDict)|constructor(type, eventInitDict)|DeviceOrientationEvent(type)|constructor(type)" id="dom-deviceorientationevent-deviceorientationevent"><code><c- g>constructor</c-></code><a class="self-link" href="#dom-deviceorientationevent-deviceorientationevent"></a></dfn>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="DeviceOrientationEvent/DeviceOrientationEvent(type, eventInitDict), DeviceOrientationEvent/constructor(type, eventInitDict), DeviceOrientationEvent/DeviceOrientationEvent(type), DeviceOrientationEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-deviceorientationevent-deviceorientationevent-type-eventinitdict-type"><code><c- g>type</c-></code><a class="self-link" href="#dom-deviceorientationevent-deviceorientationevent-type-eventinitdict-type"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-deviceorientationeventinit" id="ref-for-dictdef-deviceorientationeventinit"><c- n>DeviceOrientationEventInit</c-></a> <dfn class="idl-code" data-dfn-for="DeviceOrientationEvent/DeviceOrientationEvent(type, eventInitDict), DeviceOrientationEvent/constructor(type, eventInitDict), DeviceOrientationEvent/DeviceOrientationEvent(type), DeviceOrientationEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-deviceorientationevent-deviceorientationevent-type-eventinitdict-eventinitdict"><code><c- g>eventInitDict</c-></code><a class="self-link" href="#dom-deviceorientationevent-deviceorientationevent-type-eventinitdict-eventinitdict"></a></dfn> = {});
+    <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceOrientationEvent" data-dfn-type="constructor" data-export data-lt="DeviceOrientationEvent(type, eventInitDict)|constructor(type, eventInitDict)|DeviceOrientationEvent(type)|constructor(type)" id="dom-deviceorientationevent-deviceorientationevent"><code><c- g>constructor</c-></code></dfn>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceOrientationEvent/DeviceOrientationEvent(type, eventInitDict), DeviceOrientationEvent/constructor(type, eventInitDict), DeviceOrientationEvent/DeviceOrientationEvent(type), DeviceOrientationEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-deviceorientationevent-deviceorientationevent-type-eventinitdict-type"><code><c- g>type</c-></code></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-deviceorientationeventinit" id="ref-for-dictdef-deviceorientationeventinit"><c- n>DeviceOrientationEventInit</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceOrientationEvent/DeviceOrientationEvent(type, eventInitDict), DeviceOrientationEvent/constructor(type, eventInitDict), DeviceOrientationEvent/DeviceOrientationEvent(type), DeviceOrientationEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-deviceorientationevent-deviceorientationevent-type-eventinitdict-eventinitdict"><code><c- g>eventInitDict</c-></code></dfn> = {});
     <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double"><c- b>double</c-></a>? <a class="idl-code" data-link-type="attribute" data-readonly data-type="double?" href="#dom-deviceorientationevent-alpha" id="ref-for-dom-deviceorientationevent-alpha⑤"><c- g>alpha</c-></a>;
     <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①"><c- b>double</c-></a>? <a class="idl-code" data-link-type="attribute" data-readonly data-type="double?" href="#dom-deviceorientationevent-beta" id="ref-for-dom-deviceorientationevent-beta④"><c- g>beta</c-></a>;
     <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double②"><c- b>double</c-></a>? <a class="idl-code" data-link-type="attribute" data-readonly data-type="double?" href="#dom-deviceorientationevent-gamma" id="ref-for-dom-deviceorientationevent-gamma④"><c- g>gamma</c-></a>;
     <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean"><c- b>boolean</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="boolean" href="#dom-deviceorientationevent-absolute" id="ref-for-dom-deviceorientationevent-absolute"><c- g>absolute</c-></a>;
 
-    <c- b>static</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate" id="ref-for-dom-permissionstate"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-deviceorientationevent-requestpermission" id="ref-for-dom-deviceorientationevent-requestpermission①"><c- g>requestPermission</c-></a>(<c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean①"><c- b>boolean</c-></a> <dfn class="idl-code" data-dfn-for="DeviceOrientationEvent/requestPermission(absolute), DeviceOrientationEvent/requestPermission()" data-dfn-type="argument" data-export id="dom-deviceorientationevent-requestpermission-absolute-absolute"><code><c- g>absolute</c-></code><a class="self-link" href="#dom-deviceorientationevent-requestpermission-absolute-absolute"></a></dfn> = <c- b>false</c->);
+    <c- b>static</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise"><c- b>Promise</c-></a>&lt;<a data-link-type="idl-name" href="https://w3c.github.io/permissions/#dom-permissionstate" id="ref-for-dom-permissionstate"><c- n>PermissionState</c-></a>> <a class="idl-code" data-link-type="method" href="#dom-deviceorientationevent-requestpermission" id="ref-for-dom-deviceorientationevent-requestpermission①"><c- g>requestPermission</c-></a>(<c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean①"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceOrientationEvent/requestPermission(absolute), DeviceOrientationEvent/requestPermission()" data-dfn-type="argument" data-export id="dom-deviceorientationevent-requestpermission-absolute-absolute"><code><c- g>absolute</c-></code></dfn> = <c- b>false</c->);
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-deviceorientationeventinit"><code><c- g>DeviceOrientationEventInit</c-></code></dfn> : <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#dictdef-eventinit" id="ref-for-dictdef-eventinit"><c- n>EventInit</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double③"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-deviceorientationeventinit-alpha"><code><c- g>alpha</c-></code><a class="self-link" href="#dom-deviceorientationeventinit-alpha"></a></dfn> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double④"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-deviceorientationeventinit-beta"><code><c- g>beta</c-></code><a class="self-link" href="#dom-deviceorientationeventinit-beta"></a></dfn> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double⑤"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-deviceorientationeventinit-gamma"><code><c- g>gamma</c-></code><a class="self-link" href="#dom-deviceorientationeventinit-gamma"></a></dfn> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean②"><c- b>boolean</c-></a> <dfn class="idl-code" data-default="false" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-deviceorientationeventinit-absolute"><code><c- g>absolute</c-></code><a class="self-link" href="#dom-deviceorientationeventinit-absolute"></a></dfn> = <c- b>false</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double③"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-deviceorientationeventinit-alpha"><code><c- g>alpha</c-></code></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double④"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-deviceorientationeventinit-beta"><code><c- g>beta</c-></code></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double⑤"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-deviceorientationeventinit-gamma"><code><c- g>gamma</c-></code></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean" id="ref-for-idl-boolean②"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-default="false" data-dfn-for="DeviceOrientationEventInit" data-dfn-type="dict-member" data-export data-type="boolean" id="dom-deviceorientationeventinit-absolute"><code><c- g>absolute</c-></code></dfn> = <c- b>false</c->;
 };
 </pre>
    <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="Window" data-dfn-type="attribute" data-export id="dom-window-ondeviceorientation"><code>ondeviceorientation</code></dfn> attribute is an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-idl-attributes" id="ref-for-event-handler-idl-attributes">event handler IDL attribute</a> for the <code>ondeviceorientation</code> <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handlers" id="ref-for-event-handlers">event handler</a>, whose <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-event-type" id="ref-for-event-handler-event-type">event handler event type</a> is <dfn class="dfn-paneled idl-code" data-dfn-for="Window" data-dfn-type="event" data-export id="def-deviceorientation"><code>deviceorientation</code></dfn>.</p>
@@ -1227,9 +1300,9 @@ <h3 class="heading settled" data-level="6.1" id="deviceorientation"><span class=
      <li data-md>
       <p>Let <var>global</var> be the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#current-global-object" id="ref-for-current-global-object">current global object</a>.</p>
      <li data-md>
-      <p>Let <var>hasTransientActivation</var> be true if <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global">relevant global object</a> has <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/interaction.html#transient-activation" id="ref-for-transient-activation">transient activation</a>, and false otherwise.</p>
+      <p>Let <var>hasTransientActivation</var> be true if <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this">this</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global">relevant global object</a> has <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/interaction.html#transient-activation" id="ref-for-transient-activation">transient activation</a>, and false otherwise.</p>
      <li data-md>
-      <p>Let <var>promise</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise">a new promise</a> in <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①">this</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm" id="ref-for-concept-relevant-realm">relevant Realm</a>.</p>
+      <p>Let <var>promise</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise">a new promise</a> in <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this①">this</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm" id="ref-for-concept-relevant-realm">relevant Realm</a>.</p>
      <li data-md>
       <p>Let <var>permissions</var> be « <a class="idl-code" data-link-type="permission" href="#permissiondef-accelerometer" id="ref-for-permissiondef-accelerometer③">"accelerometer"</a>, <a class="idl-code" data-link-type="permission" href="#permissiondef-gyroscope" id="ref-for-permissiondef-gyroscope③">"gyroscope"</a> ».</p>
      <li data-md>
@@ -1277,7 +1350,7 @@ <h3 class="heading settled" data-level="6.1" id="deviceorientation"><span class=
      <li data-md>
       <p>Let <var>orientation</var> be null.</p>
      <li data-md>
-      <p>Let <var>topLevelTraversable</var> be <var>window</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window-navigable" id="ref-for-window-navigable">navigable</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-top" id="ref-for-nav-top">top-level traversable</a>.</p>
+      <p>Let <var>topLevelTraversable</var> be <var>window</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window-navigable" id="ref-for-window-navigable">navigable</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-top" id="ref-for-nav-top">top-level traversable</a>.</p>
      <li data-md>
       <p>Let <var>virtualSensorType</var> be "<code><a data-link-type="dfn" href="#relative-orientation-virtual-sensor-type" id="ref-for-relative-orientation-virtual-sensor-type">relative-orientation</a></code>" if <var>absolute</var> is false, and "<code><a data-link-type="dfn" href="#absolute-orientation-virtual-sensor-type" id="ref-for-absolute-orientation-virtual-sensor-type">absolute-orientation</a></code>" otherwise.</p>
      <li data-md>
@@ -1359,7 +1432,7 @@ <h3 class="heading settled" data-level="6.1" id="deviceorientation"><span class=
    <p>A <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="significant-change-in-orientation">significant change in orientation</dfn> indicates a difference in orientation values compared to the previous ones that warrants the firing of a <a class="idl-code" data-link-type="event" href="#def-deviceorientation" id="ref-for-def-deviceorientation③">deviceorientation</a> or <a class="idl-code" data-link-type="event" href="#def-deviceorientationabsolute" id="ref-for-def-deviceorientationabsolute②">deviceorientationabsolute</a> event. The process of determining whether a <a data-link-type="dfn" href="#significant-change-in-orientation" id="ref-for-significant-change-in-orientation">significant change in orientation</a> has occurred is <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#implementation-defined" id="ref-for-implementation-defined①">implementation-defined</a>, though a maximum threshold for change of 1 degree is recommended. Implementations may also consider that it has occurred if they have reason to believe that the page does not have sufficiently fresh data.</p>
    <p class="note" role="note"><span class="marker">Note:</span> Implementations must take <a href="#automation">§ 9 Automation</a> into account to determine whether a <a data-link-type="dfn" href="#significant-change-in-orientation" id="ref-for-significant-change-in-orientation①">significant change in orientation</a> has occurred, so that a virtual sensor reading update causes it to be assessed.</p>
    <div class="algorithm" data-algorithm="deviceorientation firing steps">
-     Whenever a <a data-link-type="dfn" href="#significant-change-in-orientation" id="ref-for-significant-change-in-orientation②">significant change in orientation</a> occurs, the user agent must execute the following steps on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable">navigable</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window">active window</a> <var>window</var>: 
+     Whenever a <a data-link-type="dfn" href="#significant-change-in-orientation" id="ref-for-significant-change-in-orientation②">significant change in orientation</a> occurs, the user agent must execute the following steps on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable">navigable</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window">active window</a> <var>window</var>: 
     <ol>
      <li data-md>
       <p>Let <var>document</var> be <var>window</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-document-window" id="ref-for-concept-document-window">associated Document</a>.</p>
@@ -1389,7 +1462,7 @@ <h3 class="heading settled" data-level="6.1" id="deviceorientation"><span class=
    </div>
    <p>If an implementation can never provide orientation information, the event should be fired with the <code class="idl"><a data-link-type="idl" href="#dom-deviceorientationevent-alpha" id="ref-for-dom-deviceorientationevent-alpha⑦">alpha</a></code>, <code class="idl"><a data-link-type="idl" href="#dom-deviceorientationevent-beta" id="ref-for-dom-deviceorientationevent-beta⑥">beta</a></code> and <code class="idl"><a data-link-type="idl" href="#dom-deviceorientationevent-gamma" id="ref-for-dom-deviceorientationevent-gamma⑥">gamma</a></code> attributes set to null, and the <code class="idl"><a data-link-type="idl" href="#dom-deviceorientationevent-absolute" id="ref-for-dom-deviceorientationevent-absolute②">absolute</a></code> attribute set to false.</p>
    <h3 class="heading settled" data-level="6.2" id="deviceorientationabsolute"><span class="secno">6.2. </span><span class="content">deviceorientationabsolute Event</span><a class="self-link" href="#deviceorientationabsolute"></a></h3>
-   <div class="issue" id="issue-4854fc01"><a class="self-link" href="#issue-4854fc01"></a> The <code class="idl"><a data-link-type="idl" href="#def-deviceorientationabsolute" id="ref-for-def-deviceorientationabsolute③">deviceorientationabsolute</a></code> event and its <code class="idl"><a data-link-type="idl" href="#dom-window-ondeviceorientationabsolute" id="ref-for-dom-window-ondeviceorientationabsolute">ondeviceorientationabsolute</a></code> event handler IDL attribute are <a data-link-type="dfn" href="https://www.w3.org/Consortium/Process/#at-risk" id="ref-for-at-risk③">at risk</a> due to <a href="https://wpt.fyi/results/orientation-event/idlharness.https.window.html">limited implementation experience</a>. </div>
+   <div class="issue" id="issue-4854fc01"><a class="self-link" href="#issue-4854fc01"></a> The <code class="idl"><a data-link-type="idl" href="#def-deviceorientationabsolute" id="ref-for-def-deviceorientationabsolute③">deviceorientationabsolute</a></code> event and its <code class="idl"><a data-link-type="idl" href="#dom-window-ondeviceorientationabsolute" id="ref-for-dom-window-ondeviceorientationabsolute">ondeviceorientationabsolute</a></code> event handler IDL attribute are <a data-link-type="dfn" href="https://www.w3.org/policies/process/#at-risk" id="ref-for-at-risk③">at risk</a> due to <a href="https://wpt.fyi/results/orientation-event/idlharness.https.window.html">limited implementation experience</a>. </div>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window" id="ref-for-window②"><c- g>Window</c-></a> {
     [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext②"><c- g>SecureContext</c-></a>] <c- b>attribute</c-> <a data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/webappapis.html#eventhandler" id="ref-for-eventhandler①"><c- n>EventHandler</c-></a> <a class="idl-code" data-link-type="attribute" data-type="EventHandler" href="#dom-window-ondeviceorientationabsolute" id="ref-for-dom-window-ondeviceorientationabsolute①"><c- g>ondeviceorientationabsolute</c-></a>;
 };
@@ -1397,7 +1470,7 @@ <h3 class="heading settled" data-level="6.2" id="deviceorientationabsolute"><spa
    <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="Window" data-dfn-type="attribute" data-export id="dom-window-ondeviceorientationabsolute"><code>ondeviceorientationabsolute</code></dfn> attribute is an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-idl-attributes" id="ref-for-event-handler-idl-attributes①">event handler IDL attribute</a> for the <code>ondeviceorientationabsolute</code> <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handlers" id="ref-for-event-handlers①">event handler</a>, whose <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-event-type" id="ref-for-event-handler-event-type①">event handler event type</a> is <dfn class="dfn-paneled idl-code" data-dfn-for="Window" data-dfn-type="event" data-export id="def-deviceorientationabsolute"><code>deviceorientationabsolute</code></dfn>.</p>
    <p>A <a class="idl-code" data-link-type="event" href="#def-deviceorientationabsolute" id="ref-for-def-deviceorientationabsolute④">deviceorientationabsolute</a> event is completely analogous to the <a class="idl-code" data-link-type="event" href="#def-deviceorientation" id="ref-for-def-deviceorientation⑤">deviceorientation</a> event, except that it must always provide <a data-link-type="dfn" href="#absolute-orientation" id="ref-for-absolute-orientation④">absolute orientation</a> data.</p>
    <div class="algorithm" data-algorithm="deviceorientationabsolute firing steps">
-     Whenever a <a data-link-type="dfn" href="#significant-change-in-orientation" id="ref-for-significant-change-in-orientation③">significant change in orientation</a> occurs, the user agent must execute the following steps on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable①">navigable</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window①">active window</a> <var>window</var>: 
+     Whenever a <a data-link-type="dfn" href="#significant-change-in-orientation" id="ref-for-significant-change-in-orientation③">significant change in orientation</a> occurs, the user agent must execute the following steps on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable①">navigable</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window①">active window</a> <var>window</var>: 
     <ol>
      <li data-md>
       <p><a data-link-type="dfn" href="#fire-an-orientation-event" id="ref-for-fire-an-orientation-event①">Fire an orientation event</a> with <a class="idl-code" data-link-type="event" href="#def-deviceorientationabsolute" id="ref-for-def-deviceorientationabsolute⑤">deviceorientationabsolute</a>, <var>window</var>, and true.</p>
@@ -1425,9 +1498,9 @@ <h4 class="heading settled" data-level="6.3.1" id="device-motion-event-accelerat
     <dd data-md>
      <p>The device’s acceleration rate along the Z axis, or null. It is initially null.</p>
    </dl>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventAcceleration" data-dfn-type="attribute" data-export id="dom-devicemotioneventacceleration-x"><code>x</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②">this</a>'s <a data-link-type="dfn" href="#devicemotioneventacceleration-x-axis-acceleration" id="ref-for-devicemotioneventacceleration-x-axis-acceleration">x axis acceleration</a>.</p>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventAcceleration" data-dfn-type="attribute" data-export id="dom-devicemotioneventacceleration-y"><code>y</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this③">this</a>'s <a data-link-type="dfn" href="#devicemotioneventacceleration-y-axis-acceleration" id="ref-for-devicemotioneventacceleration-y-axis-acceleration">y axis acceleration</a>.</p>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventAcceleration" data-dfn-type="attribute" data-export id="dom-devicemotioneventacceleration-z"><code>z</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this④">this</a>'s <a data-link-type="dfn" href="#devicemotioneventacceleration-z-axis-acceleration" id="ref-for-devicemotioneventacceleration-z-axis-acceleration">z axis acceleration</a>.</p>
+   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventAcceleration" data-dfn-type="attribute" data-export id="dom-devicemotioneventacceleration-x"><code>x</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this②">this</a>’s <a data-link-type="dfn" href="#devicemotioneventacceleration-x-axis-acceleration" id="ref-for-devicemotioneventacceleration-x-axis-acceleration">x axis acceleration</a>.</p>
+   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventAcceleration" data-dfn-type="attribute" data-export id="dom-devicemotioneventacceleration-y"><code>y</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this③">this</a>’s <a data-link-type="dfn" href="#devicemotioneventacceleration-y-axis-acceleration" id="ref-for-devicemotioneventacceleration-y-axis-acceleration">y axis acceleration</a>.</p>
+   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventAcceleration" data-dfn-type="attribute" data-export id="dom-devicemotioneventacceleration-z"><code>z</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this④">this</a>’s <a data-link-type="dfn" href="#devicemotioneventacceleration-z-axis-acceleration" id="ref-for-devicemotioneventacceleration-z-axis-acceleration">z axis acceleration</a>.</p>
    <h4 class="heading settled" data-level="6.3.2" id="device-motion-event-rotation-rate-api"><span class="secno">6.3.2. </span><span class="content">The DeviceMotionEventRotationRate interface</span><a class="self-link" href="#device-motion-event-rotation-rate-api"></a></h4>
 <pre class="idl highlight def">[<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed②"><c- g>Exposed</c-></a>=<c- n>Window</c->, <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext④"><c- g>SecureContext</c-></a>]
 <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="devicemotioneventrotationrate"><code><c- g>DeviceMotionEventRotationRate</c-></code></dfn> {
@@ -1448,9 +1521,9 @@ <h4 class="heading settled" data-level="6.3.2" id="device-motion-event-rotation-
     <dd data-md>
      <p>The device’s rotation rate about the Z axis, or null. It is initially null.</p>
    </dl>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventRotationRate" data-dfn-type="attribute" data-export id="dom-devicemotioneventrotationrate-alpha"><code>alpha</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑤">this</a>'s <a data-link-type="dfn" href="#devicemotioneventrotationrate-x-axis-rotation-rate" id="ref-for-devicemotioneventrotationrate-x-axis-rotation-rate">x axis rotation rate</a>.</p>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventRotationRate" data-dfn-type="attribute" data-export id="dom-devicemotioneventrotationrate-beta"><code>beta</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑥">this</a>'s <a data-link-type="dfn" href="#devicemotioneventrotationrate-y-axis-rotation-rate" id="ref-for-devicemotioneventrotationrate-y-axis-rotation-rate">y axis rotation rate</a>.</p>
-   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventRotationRate" data-dfn-type="attribute" data-export id="dom-devicemotioneventrotationrate-gamma"><code>gamma</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑦">this</a>'s <a data-link-type="dfn" href="#devicemotioneventrotationrate-z-axis-rotation-rate" id="ref-for-devicemotioneventrotationrate-z-axis-rotation-rate">z axis rotation rate</a>.</p>
+   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventRotationRate" data-dfn-type="attribute" data-export id="dom-devicemotioneventrotationrate-alpha"><code>alpha</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑤">this</a>’s <a data-link-type="dfn" href="#devicemotioneventrotationrate-x-axis-rotation-rate" id="ref-for-devicemotioneventrotationrate-x-axis-rotation-rate">x axis rotation rate</a>.</p>
+   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventRotationRate" data-dfn-type="attribute" data-export id="dom-devicemotioneventrotationrate-beta"><code>beta</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑥">this</a>’s <a data-link-type="dfn" href="#devicemotioneventrotationrate-y-axis-rotation-rate" id="ref-for-devicemotioneventrotationrate-y-axis-rotation-rate">y axis rotation rate</a>.</p>
+   <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventRotationRate" data-dfn-type="attribute" data-export id="dom-devicemotioneventrotationrate-gamma"><code>gamma</code></dfn> getter steps are to return the value of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑦">this</a>’s <a data-link-type="dfn" href="#devicemotioneventrotationrate-z-axis-rotation-rate" id="ref-for-devicemotioneventrotationrate-z-axis-rotation-rate">z axis rotation rate</a>.</p>
    <h4 class="heading settled" data-level="6.3.3" id="device-motion-event-api"><span class="secno">6.3.3. </span><span class="content">The DeviceMotionEvent interface</span><a class="self-link" href="#device-motion-event-api"></a></h4>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window" id="ref-for-window③"><c- g>Window</c-></a> {
     [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext⑤"><c- g>SecureContext</c-></a>] <c- b>attribute</c-> <a data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/webappapis.html#eventhandler" id="ref-for-eventhandler②"><c- n>EventHandler</c-></a> <a class="idl-code" data-link-type="attribute" data-type="EventHandler" href="#dom-window-ondevicemotion" id="ref-for-dom-window-ondevicemotion"><c- g>ondevicemotion</c-></a>;
@@ -1458,7 +1531,7 @@ <h4 class="heading settled" data-level="6.3.3" id="device-motion-event-api"><spa
 
 [<a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#Exposed" id="ref-for-Exposed③"><c- g>Exposed</c-></a>=<c- n>Window</c->, <a class="idl-code" data-link-type="extended-attribute" href="https://webidl.spec.whatwg.org/#SecureContext" id="ref-for-SecureContext⑥"><c- g>SecureContext</c-></a>]
 <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="devicemotionevent"><code><c- g>DeviceMotionEvent</c-></code></dfn> : <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#event" id="ref-for-event①"><c- n>Event</c-></a> {
-    <dfn class="idl-code" data-dfn-for="DeviceMotionEvent" data-dfn-type="constructor" data-export data-lt="DeviceMotionEvent(type, eventInitDict)|constructor(type, eventInitDict)|DeviceMotionEvent(type)|constructor(type)" id="dom-devicemotionevent-devicemotionevent"><code><c- g>constructor</c-></code><a class="self-link" href="#dom-devicemotionevent-devicemotionevent"></a></dfn>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString②"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="DeviceMotionEvent/DeviceMotionEvent(type, eventInitDict), DeviceMotionEvent/constructor(type, eventInitDict), DeviceMotionEvent/DeviceMotionEvent(type), DeviceMotionEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-devicemotionevent-devicemotionevent-type-eventinitdict-type"><code><c- g>type</c-></code><a class="self-link" href="#dom-devicemotionevent-devicemotionevent-type-eventinitdict-type"></a></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-devicemotioneventinit" id="ref-for-dictdef-devicemotioneventinit"><c- n>DeviceMotionEventInit</c-></a> <dfn class="idl-code" data-dfn-for="DeviceMotionEvent/DeviceMotionEvent(type, eventInitDict), DeviceMotionEvent/constructor(type, eventInitDict), DeviceMotionEvent/DeviceMotionEvent(type), DeviceMotionEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-devicemotionevent-devicemotionevent-type-eventinitdict-eventinitdict"><code><c- g>eventInitDict</c-></code><a class="self-link" href="#dom-devicemotionevent-devicemotionevent-type-eventinitdict-eventinitdict"></a></dfn> = {});
+    <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEvent" data-dfn-type="constructor" data-export data-lt="DeviceMotionEvent(type, eventInitDict)|constructor(type, eventInitDict)|DeviceMotionEvent(type)|constructor(type)" id="dom-devicemotionevent-devicemotionevent"><code><c- g>constructor</c-></code></dfn>(<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString②"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEvent/DeviceMotionEvent(type, eventInitDict), DeviceMotionEvent/constructor(type, eventInitDict), DeviceMotionEvent/DeviceMotionEvent(type), DeviceMotionEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-devicemotionevent-devicemotionevent-type-eventinitdict-type"><code><c- g>type</c-></code></dfn>, <c- b>optional</c-> <a data-link-type="idl-name" href="#dictdef-devicemotioneventinit" id="ref-for-dictdef-devicemotioneventinit"><c- n>DeviceMotionEventInit</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEvent/DeviceMotionEvent(type, eventInitDict), DeviceMotionEvent/constructor(type, eventInitDict), DeviceMotionEvent/DeviceMotionEvent(type), DeviceMotionEvent/constructor(type)" data-dfn-type="argument" data-export id="dom-devicemotionevent-devicemotionevent-type-eventinitdict-eventinitdict"><code><c- g>eventInitDict</c-></code></dfn> = {});
     <c- b>readonly</c-> <c- b>attribute</c-> <a data-link-type="idl-name" href="#devicemotioneventacceleration" id="ref-for-devicemotioneventacceleration①"><c- n>DeviceMotionEventAcceleration</c-></a>? <a class="idl-code" data-link-type="attribute" data-readonly data-type="DeviceMotionEventAcceleration?" href="#dom-devicemotionevent-acceleration" id="ref-for-dom-devicemotionevent-acceleration②"><c- g>acceleration</c-></a>;
     <c- b>readonly</c-> <c- b>attribute</c-> <a data-link-type="idl-name" href="#devicemotioneventacceleration" id="ref-for-devicemotioneventacceleration②"><c- n>DeviceMotionEventAcceleration</c-></a>? <a class="idl-code" data-link-type="attribute" data-readonly data-type="DeviceMotionEventAcceleration?" href="#dom-devicemotionevent-accelerationincludinggravity" id="ref-for-dom-devicemotionevent-accelerationincludinggravity③"><c- g>accelerationIncludingGravity</c-></a>;
     <c- b>readonly</c-> <c- b>attribute</c-> <a data-link-type="idl-name" href="#devicemotioneventrotationrate" id="ref-for-devicemotioneventrotationrate①"><c- n>DeviceMotionEventRotationRate</c-></a>? <a class="idl-code" data-link-type="attribute" data-readonly data-type="DeviceMotionEventRotationRate?" href="#dom-devicemotionevent-rotationrate" id="ref-for-dom-devicemotionevent-rotationrate①"><c- g>rotationRate</c-></a>;
@@ -1468,22 +1541,22 @@ <h4 class="heading settled" data-level="6.3.3" id="device-motion-event-api"><spa
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-devicemotioneventaccelerationinit"><code><c- g>DeviceMotionEventAccelerationInit</c-></code></dfn> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①③"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceMotionEventAccelerationInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-devicemotioneventaccelerationinit-x"><code><c- g>x</c-></code><a class="self-link" href="#dom-devicemotioneventaccelerationinit-x"></a></dfn> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①④"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceMotionEventAccelerationInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-devicemotioneventaccelerationinit-y"><code><c- g>y</c-></code><a class="self-link" href="#dom-devicemotioneventaccelerationinit-y"></a></dfn> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑤"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceMotionEventAccelerationInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-devicemotioneventaccelerationinit-z"><code><c- g>z</c-></code><a class="self-link" href="#dom-devicemotioneventaccelerationinit-z"></a></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①③"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceMotionEventAccelerationInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-devicemotioneventaccelerationinit-x"><code><c- g>x</c-></code></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①④"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceMotionEventAccelerationInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-devicemotioneventaccelerationinit-y"><code><c- g>y</c-></code></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑤"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceMotionEventAccelerationInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-devicemotioneventaccelerationinit-z"><code><c- g>z</c-></code></dfn> = <c- b>null</c->;
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-devicemotioneventrotationrateinit"><code><c- g>DeviceMotionEventRotationRateInit</c-></code></dfn> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑥"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceMotionEventRotationRateInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-devicemotioneventrotationrateinit-alpha"><code><c- g>alpha</c-></code><a class="self-link" href="#dom-devicemotioneventrotationrateinit-alpha"></a></dfn> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑦"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceMotionEventRotationRateInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-devicemotioneventrotationrateinit-beta"><code><c- g>beta</c-></code><a class="self-link" href="#dom-devicemotioneventrotationrateinit-beta"></a></dfn> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑧"><c- b>double</c-></a>? <dfn class="idl-code" data-default="null" data-dfn-for="DeviceMotionEventRotationRateInit" data-dfn-type="dict-member" data-export data-type="double? " id="dom-devicemotioneventrotationrateinit-gamma"><code><c- g>gamma</c-></code><a class="self-link" href="#dom-devicemotioneventrotationrateinit-gamma"></a></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑥"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceMotionEventRotationRateInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-devicemotioneventrotationrateinit-alpha"><code><c- g>alpha</c-></code></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑦"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceMotionEventRotationRateInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-devicemotioneventrotationrateinit-beta"><code><c- g>beta</c-></code></dfn> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑧"><c- b>double</c-></a>? <dfn class="dfn-paneled idl-code" data-default="null" data-dfn-for="DeviceMotionEventRotationRateInit" data-dfn-type="dict-member" data-export data-type="double?" id="dom-devicemotioneventrotationrateinit-gamma"><code><c- g>gamma</c-></code></dfn> = <c- b>null</c->;
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-devicemotioneventinit"><code><c- g>DeviceMotionEventInit</c-></code></dfn> : <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#dictdef-eventinit" id="ref-for-dictdef-eventinit①"><c- n>EventInit</c-></a> {
-    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit" id="ref-for-dictdef-devicemotioneventaccelerationinit"><c- n>DeviceMotionEventAccelerationInit</c-></a> <dfn class="idl-code" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="DeviceMotionEventAccelerationInit " id="dom-devicemotioneventinit-acceleration"><code><c- g>acceleration</c-></code><a class="self-link" href="#dom-devicemotioneventinit-acceleration"></a></dfn>;
-    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit" id="ref-for-dictdef-devicemotioneventaccelerationinit①"><c- n>DeviceMotionEventAccelerationInit</c-></a> <dfn class="idl-code" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="DeviceMotionEventAccelerationInit " id="dom-devicemotioneventinit-accelerationincludinggravity"><code><c- g>accelerationIncludingGravity</c-></code><a class="self-link" href="#dom-devicemotioneventinit-accelerationincludinggravity"></a></dfn>;
-    <a data-link-type="idl-name" href="#dictdef-devicemotioneventrotationrateinit" id="ref-for-dictdef-devicemotioneventrotationrateinit"><c- n>DeviceMotionEventRotationRateInit</c-></a> <dfn class="idl-code" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="DeviceMotionEventRotationRateInit " id="dom-devicemotioneventinit-rotationrate"><code><c- g>rotationRate</c-></code><a class="self-link" href="#dom-devicemotioneventinit-rotationrate"></a></dfn>;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑨"><c- b>double</c-></a> <dfn class="idl-code" data-default="0" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="double " id="dom-devicemotioneventinit-interval"><code><c- g>interval</c-></code><a class="self-link" href="#dom-devicemotioneventinit-interval"></a></dfn> = 0;
+    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit" id="ref-for-dictdef-devicemotioneventaccelerationinit"><c- n>DeviceMotionEventAccelerationInit</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="DeviceMotionEventAccelerationInit" id="dom-devicemotioneventinit-acceleration"><code><c- g>acceleration</c-></code></dfn>;
+    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit" id="ref-for-dictdef-devicemotioneventaccelerationinit①"><c- n>DeviceMotionEventAccelerationInit</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="DeviceMotionEventAccelerationInit" id="dom-devicemotioneventinit-accelerationincludinggravity"><code><c- g>accelerationIncludingGravity</c-></code></dfn>;
+    <a data-link-type="idl-name" href="#dictdef-devicemotioneventrotationrateinit" id="ref-for-dictdef-devicemotioneventrotationrateinit"><c- n>DeviceMotionEventRotationRateInit</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="DeviceMotionEventRotationRateInit" id="dom-devicemotioneventinit-rotationrate"><code><c- g>rotationRate</c-></code></dfn>;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double" id="ref-for-idl-double①⑨"><c- b>double</c-></a> <dfn class="dfn-paneled idl-code" data-default="0" data-dfn-for="DeviceMotionEventInit" data-dfn-type="dict-member" data-export data-type="double" id="dom-devicemotioneventinit-interval"><code><c- g>interval</c-></code></dfn> = 0;
 };
 </pre>
    <p>The <dfn class="dfn-paneled idl-code" data-dfn-for="Window" data-dfn-type="attribute" data-export id="dom-window-ondevicemotion"><code>ondevicemotion</code></dfn> attribute is an <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-idl-attributes" id="ref-for-event-handler-idl-attributes②">event handler IDL attribute</a> for the <code>ondevicemotion</code> <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handlers" id="ref-for-event-handlers②">event handler</a>, whose <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#event-handler-event-type" id="ref-for-event-handler-event-type②">event handler event type</a> is <dfn class="dfn-paneled idl-code" data-dfn-for="Window" data-dfn-type="event" data-export id="def-devicemotion"><code>devicemotion</code></dfn>.</p>
@@ -1497,9 +1570,9 @@ <h4 class="heading settled" data-level="6.3.3" id="device-motion-event-api"><spa
      <li data-md>
       <p>Let <var>global</var> be the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#current-global-object" id="ref-for-current-global-object①">current global object</a>.</p>
      <li data-md>
-      <p>Let <var>hasTransientActivation</var> be true if <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑧">this</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global①">relevant global object</a> has <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/interaction.html#transient-activation" id="ref-for-transient-activation①">transient activation</a>, and false otherwise.</p>
+      <p>Let <var>hasTransientActivation</var> be true if <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑧">this</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global①">relevant global object</a> has <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/interaction.html#transient-activation" id="ref-for-transient-activation①">transient activation</a>, and false otherwise.</p>
      <li data-md>
-      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①">a new promise</a> in <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑨">this</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm" id="ref-for-concept-relevant-realm①">relevant Realm</a>.</p>
+      <p>Let <var>result</var> be <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise①">a new promise</a> in <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#this" id="ref-for-this⑨">this</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-realm" id="ref-for-concept-relevant-realm①">relevant Realm</a>.</p>
      <li data-md>
       <p>Run these steps <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel" id="ref-for-in-parallel②">in parallel</a>:</p>
       <ol>
@@ -1534,14 +1607,13 @@ <h4 class="heading settled" data-level="6.3.3" id="device-motion-event-api"><spa
         </ol>
        <li data-md>
         <p><a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-global-task" id="ref-for-queue-a-global-task④">Queue a global task</a> on the <a data-link-type="dfn" href="#device-motion-and-orientation-task-source" id="ref-for-device-motion-and-orientation-task-source④">device motion and orientation task source</a> given <var>global</var> to <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve①">resolve</a> <var>result</var> with <var>permissionState</var>.</p>
-       <p></p>
       </ol>
      <li data-md>
       <p>Return <var>result</var>.</p>
     </ol>
    </div>
    <div class="algorithm" data-algorithm="devicemotion firing steps">
-     At an <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#implementation-defined" id="ref-for-implementation-defined②">implementation-defined</a> interval <var>interval</var>, the user agent must execute the following steps on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable②">navigable</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window②">active window</a> <var>window</var>: 
+     At an <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#implementation-defined" id="ref-for-implementation-defined②">implementation-defined</a> interval <var>interval</var>, the user agent must execute the following steps on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable②">navigable</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window②">active window</a> <var>window</var>: 
     <ol>
      <li data-md>
       <p>Let <var>document</var> be <var>window</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#concept-document-window" id="ref-for-concept-document-window①">associated Document</a>.</p>
@@ -1554,7 +1626,7 @@ <h4 class="heading settled" data-level="6.3.3" id="device-motion-event-api"><spa
         <p>If <var>document</var> is not <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#allowed-to-use" id="ref-for-allowed-to-use①">allowed to use</a> the <a data-link-type="dfn" href="https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature" id="ref-for-policy-controlled-feature①">policy-controlled feature</a> named <var>policy</var>, return.</p>
       </ol>
      <li data-md>
-      <p>Let <var>topLevelTraversable</var> be <var>window</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window-navigable" id="ref-for-window-navigable①">navigable</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-top" id="ref-for-nav-top①">top-level traversable</a>.</p>
+      <p>Let <var>topLevelTraversable</var> be <var>window</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window-navigable" id="ref-for-window-navigable①">navigable</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-top" id="ref-for-nav-top①">top-level traversable</a>.</p>
      <li data-md>
       <p>Let <var>platformLinearAcceleration</var> be null.</p>
      <li data-md>
@@ -1700,11 +1772,11 @@ <h2 class="heading settled" data-level="7" id="security-and-privacy"><span class
    <p>Furthermore, to minimize privacy risks, the chance of fingerprinting and other attacks the implementations must:</p>
    <ul>
     <li data-md>
-     <p>fire events only when a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable③">navigable</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-document" id="ref-for-nav-document">active document</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/interaction.html#visibility-state" id="ref-for-visibility-state②">visibility state</a> is "<code>visible</code>",</p>
+     <p>fire events only when a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable③">navigable</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-document" id="ref-for-nav-document">active document</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/interaction.html#visibility-state" id="ref-for-visibility-state②">visibility state</a> is "<code>visible</code>",</p>
     <li data-md>
      <p>implement <a href="#permissions-integration">§ 4 Permissions</a> so that events are fired on <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#child-navigable" id="ref-for-child-navigable">child navigables</a> (including but not restricted to cross-origin ones) only if allowed by the <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#top-level-traversable" id="ref-for-top-level-traversable">top-level traversable</a>,</p>
     <li data-md>
-     <p>fire events on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable④">navigable</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window③">active windows</a> only when its <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object②">relevant settings object</a> is a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#secure-context" id="ref-for-secure-context①">secure context</a>,</p>
+     <p>fire events on a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#navigable" id="ref-for-navigable④">navigable</a>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/document-sequences.html#nav-window" id="ref-for-nav-window③">active windows</a> only when its <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#relevant-settings-object" id="ref-for-relevant-settings-object②">relevant settings object</a> is a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#secure-context" id="ref-for-secure-context①">secure context</a>,</p>
     <li data-md>
      <p>limit precision of attribute values as described in the previous sections.</p>
    </ul>
@@ -1736,7 +1808,7 @@ <h2 class="heading settled" data-level="8" id="a11y"><span class="secno">8. </sp
      <p>It is also important that the device’s orientation can be locked - a primary use case being someone who is interacting with a touch device, such as a phone, non-visually. They may have built up 'muscle memory' as to where elements are on the screen in a given orientation, and having the layout shift would break their ability to navigate. Again, this would most likely be done at the operating system level.</p>
    </ul>
    <h2 class="heading settled" data-level="9" id="automation"><span class="secno">9. </span><span class="content">Automation</span><a class="self-link" href="#automation"></a></h2>
-   <div class="issue" id="issue-4ccb1d30"><a class="self-link" href="#issue-4ccb1d30"></a> This feature is <a data-link-type="dfn" href="https://www.w3.org/Consortium/Process/#at-risk" id="ref-for-at-risk④">at risk</a> due to limited implementation experience. </div>
+   <div class="issue" id="issue-4ccb1d30"><a class="self-link" href="#issue-4ccb1d30"></a> This feature is <a data-link-type="dfn" href="https://www.w3.org/policies/process/#at-risk" id="ref-for-at-risk④">at risk</a> due to limited implementation experience. </div>
    <p>This specification can pose a challenge to test authors, as the events defined here depend on the presence of physical hardware whose readings cannot be easily controlled.</p>
    <p>To address this challenge, this document builds upon the <a data-link-type="biblio" href="#biblio-webdriver2" title="WebDriver">[WEBDRIVER2]</a> <a data-link-type="dfn" href="https://w3c.github.io/webdriver/#dfn-extension-commands" id="ref-for-dfn-extension-commands">extension commands</a> and infrastructure laid out by <a href="https://w3c.github.io/sensors/#automation"><cite>Generic Sensor API</cite> § 9 Automation</a>. This was chosen over the option of developing completely new and independent infrastructure with separate <a data-link-type="dfn" href="https://w3c.github.io/webdriver/#dfn-extension-commands" id="ref-for-dfn-extension-commands①">extension commands</a> because there is significant overlap between the two specifications: not only does testing the <a data-link-type="biblio" href="#biblio-generic-sensor" title="Generic Sensor API">[GENERIC-SENSOR]</a> specification present similar challenges, but many derived APIs (e.g. <a data-link-type="biblio" href="#biblio-gyroscope" title="Gyroscope">[GYROSCOPE]</a>) obtain and provide similar information.</p>
    <p>This specification only requires implementations to support the <a href="https://w3c.github.io/sensors/#automation"><cite>Generic Sensor API</cite> § 9 Automation</a> section of the <a data-link-type="biblio" href="#biblio-generic-sensor" title="Generic Sensor API">[GENERIC-SENSOR]</a> specification, not its interfaces and events.</p>
@@ -1801,7 +1873,7 @@ <h4 class="heading settled" data-level="9.2.1" id="accelerometer-virtual-sensors
    <dl>
     <dt data-md><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-key" id="ref-for-map-key②">Key</a>
     <dd data-md>
-     <p>"<code><dfn data-dfn-type="dfn" data-export data-lt="accelerometer virtual sensor type" id="accelerometer-virtual-sensor-type">accelerometer<a class="self-link" href="#accelerometer-virtual-sensor-type"></a></dfn></code>"</p>
+     <p>"<code><dfn class="dfn-paneled" data-dfn-type="dfn" data-export data-lt="accelerometer virtual sensor type" id="accelerometer-virtual-sensor-type">accelerometer</dfn></code>"</p>
     <dt data-md><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-value" id="ref-for-map-value②">Value</a>
     <dd data-md>
      <p>A <a data-link-type="dfn" href="https://w3c.github.io/sensors/#virtual-sensor-metadata" id="ref-for-virtual-sensor-metadata②">virtual sensor metadata</a> whose <a data-link-type="dfn" href="https://w3c.github.io/sensors/#virtual-sensor-metadata-reading-parsing-algorithm" id="ref-for-virtual-sensor-metadata-reading-parsing-algorithm②">reading parsing algorithm</a> is <a data-link-type="dfn" href="https://w3c.github.io/sensors/#parse-xyz-reading" id="ref-for-parse-xyz-reading">parse xyz reading</a>.</p>
@@ -1811,7 +1883,7 @@ <h4 class="heading settled" data-level="9.2.2" id="linear-acceleration-virtual-s
    <dl>
     <dt data-md><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-key" id="ref-for-map-key③">Key</a>
     <dd data-md>
-     <p>"<code><dfn data-dfn-type="dfn" data-export data-lt="linear-acceleration virtual sensor type" id="linear-acceleration-virtual-sensor-type">linear-acceleration<a class="self-link" href="#linear-acceleration-virtual-sensor-type"></a></dfn></code>"</p>
+     <p>"<code><dfn class="dfn-paneled" data-dfn-type="dfn" data-export data-lt="linear-acceleration virtual sensor type" id="linear-acceleration-virtual-sensor-type">linear-acceleration</dfn></code>"</p>
     <dt data-md><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-value" id="ref-for-map-value③">Value</a>
     <dd data-md>
      <p>A <a data-link-type="dfn" href="https://w3c.github.io/sensors/#virtual-sensor-metadata" id="ref-for-virtual-sensor-metadata③">virtual sensor metadata</a> whose <a data-link-type="dfn" href="https://w3c.github.io/sensors/#virtual-sensor-metadata-reading-parsing-algorithm" id="ref-for-virtual-sensor-metadata-reading-parsing-algorithm③">reading parsing algorithm</a> is <a data-link-type="dfn" href="https://w3c.github.io/sensors/#parse-xyz-reading" id="ref-for-parse-xyz-reading①">parse xyz reading</a>.</p>
@@ -1821,7 +1893,7 @@ <h4 class="heading settled" data-level="9.2.3" id="gyroscope-virtual-sensors"><s
    <dl>
     <dt data-md><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-key" id="ref-for-map-key④">Key</a>
     <dd data-md>
-     <p>"<code><dfn data-dfn-type="dfn" data-export data-lt="gyroscope virtual sensor type" id="gyroscope-virtual-sensor-type">gyroscope<a class="self-link" href="#gyroscope-virtual-sensor-type"></a></dfn></code>"</p>
+     <p>"<code><dfn class="dfn-paneled" data-dfn-type="dfn" data-export data-lt="gyroscope virtual sensor type" id="gyroscope-virtual-sensor-type">gyroscope</dfn></code>"</p>
     <dt data-md><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-value" id="ref-for-map-value④">Value</a>
     <dd data-md>
      <p>A <a data-link-type="dfn" href="https://w3c.github.io/sensors/#virtual-sensor-metadata" id="ref-for-virtual-sensor-metadata④">virtual sensor metadata</a> whose <a data-link-type="dfn" href="https://w3c.github.io/sensors/#virtual-sensor-metadata-reading-parsing-algorithm" id="ref-for-virtual-sensor-metadata-reading-parsing-algorithm④">reading parsing algorithm</a> is <a data-link-type="dfn" href="https://w3c.github.io/sensors/#parse-xyz-reading" id="ref-for-parse-xyz-reading②">parse xyz reading</a>.</p>
@@ -1834,9 +1906,7 @@ <h3 class="heading settled" id="worked-example"><span class="content">A.1 Calcul
    <p><a href="#introduction">Introduction</a> section provided an example of using the DeviceOrientation event to obtain a compass heading when the device is held with the screen horizontal. This example shows how to determine the compass heading that the user is facing when holding the device with the screen approximately vertical in front of them. An application of this is an augmented-reality system.</p>
    <p>More precisely, we wish to determine the compass heading of the horizontal component of a vector which is orthogonal to the device’s screen and pointing out of the back of the screen.</p>
    <p>If v represents this vector in the rotated device body frame xyz, then v is as follows.</p>
-   <object class="equation" data="equation1.xhtml" type="application/mathml+xml">
-    <p><img alt="v = [0; 0; -1]" height="64" src="equation1.png" width="81"> </p>
-   </object>
+   <object class="equation" data="equation1.xhtml" type="application/mathml+xml"> <img alt="v = [0; 0; -1]" height="64" src="equation1.png" width="81"> </object>
    <p>The transformation of v due to the rotation about the z axis can be represented by the following rotation matrix.</p>
    <object class="equation" data="equation2.xhtml" type="application/mathml+xml"> <img alt="Z = [cos(alpha) -sin(alpha) 0; sin(alpha) cos(alpha) 0; 0 0 1]" height="71" src="equation2.png" width="203"> </object>
    <p>The transformation of v due to the rotation about the x axis can be represented by the following rotation matrix.</p>
@@ -1849,7 +1919,7 @@ <h3 class="heading settled" id="worked-example"><span class="content">A.1 Calcul
    <object class="equation" data="equation5a.xhtml" type="application/mathml+xml"> <img alt="v&apos; = Rv" height="26" src="equation5a.png" width="62"> </object>
    <object class="equation" data="equation5e.xhtml" type="application/mathml+xml"> <img alt="v&apos; = [-cos(alpha)sin(gamma)-sin(alpha)sin(beta)cos(gamma); -sin(alpha)sin(gamma)+cos(alpha)sin(beta)cos(gamma); -cos(beta)cos(gamma)]" height="76" src="equation5e.png" width="332"> </object>
    <p>The compass heading θ is given by</p>
-   <object class="equation" data="equation6.xhtml" type="application/mathml+xml"> <img alt="theta = atan((v’_x)/(v’_y)) = atan((-cos(alpha)sin(gamma)-sin(alpha)sin(beta)cos(gamma))/(-sin(alpha)sin(gamma)+cos(alpha)sin(beta)cos(gamma)))" height="62" src="equation6.png" width="491"> </object>
+   <object class="equation" data="equation6.xhtml" type="application/mathml+xml"> <img alt="theta = atan((v&apos;_x)/(v&apos;_y)) = atan((-cos(alpha)sin(gamma)-sin(alpha)sin(beta)cos(gamma))/(-sin(alpha)sin(gamma)+cos(alpha)sin(beta)cos(gamma)))" height="62" src="equation6.png" width="491"> </object>
    <p>provided that β and γ are not both zero.</p>
    <div class="example" id="example-cad08fa0">
     <a class="self-link" href="#example-cad08fa0"></a> 
@@ -2090,7 +2160,7 @@ <h3 class="no-ref no-num heading settled" id="w3c-conformant-algorithms"><span c
     Implementers are encouraged to optimize. </p>
    </section>
   </div>
-<script src="https://www.w3.org/scripts/TR/2021/fixup.js"></script>
+  <script src="https://www.w3.org/scripts/TR/2021/fixup.js"></script>
   <h2 class="no-num no-ref heading settled" id="index"><span class="content">Index</span><a class="self-link" href="#index"></a></h2>
   <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="content">Terms defined by this specification</span><a class="self-link" href="#index-defined-here"></a></h3>
   <ul class="index">
@@ -2262,7 +2332,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
     <a data-link-type="biblio">[GENERIC-SENSOR]</a> defines the following terms:
     <ul>
      <li><span class="dfn-paneled" id="f0a32052">can provide readings flag</span>
-     <li><span class="dfn-paneled" id="64ade43d">parse xyz reading</span>
+     <li><span class="dfn-paneled" id="64ade43d">Parse XYZ reading</span>
      <li><span class="dfn-paneled" id="5d47b5a4">per-type virtual sensor metadata</span>
      <li><span class="dfn-paneled" id="611c5008">reading parsing algorithm</span>
      <li><span class="dfn-paneled" id="5afb8cab">sensor reading</span>
@@ -2284,12 +2354,12 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="35972864">active document</span>
      <li><span class="dfn-paneled" id="101c721c">active window</span>
      <li><span class="dfn-paneled" id="3610bd67">allowed to use</span>
-     <li><span class="dfn-paneled" id="3349d69f">associated document</span>
+     <li><span class="dfn-paneled" id="3349d69f">associated Document</span>
      <li><span class="dfn-paneled" id="f23dc013">child navigable</span>
      <li><span class="dfn-paneled" id="ce3d2bbb">current global object</span>
      <li><span class="dfn-paneled" id="6a5a59a0">event handler</span>
      <li><span class="dfn-paneled" id="9d386f55">event handler event type</span>
-     <li><span class="dfn-paneled" id="03675365">event handler idl attribute</span>
+     <li><span class="dfn-paneled" id="03675365">event handler IDL attribute</span>
      <li><span class="dfn-paneled" id="a72449dd">in parallel</span>
      <li><span class="dfn-paneled" id="9c19b7fc">navigable</span>
      <li><span class="dfn-paneled" id="228be966">navigable <small>(for Window)</small></span>
@@ -2323,7 +2393,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
    <li>
     <a data-link-type="biblio">[ORIENTATION-SENSOR]</a> defines the following terms:
     <ul>
-     <li><span class="dfn-paneled" id="7235f1d9">earth's reference coordinate system</span>
+     <li><span class="dfn-paneled" id="7235f1d9">Earth's reference coordinate system</span>
     </ul>
    <li>
     <a data-link-type="biblio">[PERMISSIONS]</a> defines the following terms:
@@ -2351,7 +2421,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
    <li>
     <a data-link-type="biblio">[W3C-PROCESS]</a> defines the following terms:
     <ul>
-     <li><span class="dfn-paneled" id="dab73cb6">at risk</span>
+     <li><span class="dfn-paneled" id="a39108a8">at risk</span>
     </ul>
    <li>
     <a data-link-type="biblio">[WEBDRIVER2]</a> defines the following terms:
@@ -2401,7 +2471,7 @@ <h3 class="no-num no-ref heading settled" id="normative"><span class="content">N
    <dt id="biblio-rfc2119">[RFC2119]
    <dd>S. Bradner. <a href="https://datatracker.ietf.org/doc/html/rfc2119"><cite>Key words for use in RFCs to Indicate Requirement Levels</cite></a>. March 1997. Best Current Practice. URL: <a href="https://datatracker.ietf.org/doc/html/rfc2119">https://datatracker.ietf.org/doc/html/rfc2119</a>
    <dt id="biblio-w3c-process">[W3C-PROCESS]
-   <dd>Elika J. Etemad (fantasai); Florian Rivoal. <a href="https://www.w3.org/Consortium/Process/"><cite>W3C Process Document</cite></a>. 2 November 2021. URL: <a href="https://www.w3.org/Consortium/Process/">https://www.w3.org/Consortium/Process/</a>
+   <dd>Elika J. Etemad (fantasai); Florian Rivoal. <a href="https://www.w3.org/policies/process/"><cite>W3C Process Document</cite></a>. 3 November 2023. URL: <a href="https://www.w3.org/policies/process/">https://www.w3.org/policies/process/</a>
    <dt id="biblio-webdriver2">[WEBDRIVER2]
    <dd>Simon Stewart; David Burns. <a href="https://w3c.github.io/webdriver/"><cite>WebDriver</cite></a>. URL: <a href="https://w3c.github.io/webdriver/">https://w3c.github.io/webdriver/</a>
    <dt id="biblio-webidl">[WEBIDL]
@@ -2455,10 +2525,10 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-deviceorientationeventinit"><code><c- g>DeviceOrientationEventInit</c-></code></a> : <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#dictdef-eventinit"><c- n>EventInit</c-></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-deviceorientationeventinit-alpha"><code><c- g>alpha</c-></code></a> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-deviceorientationeventinit-beta"><code><c- g>beta</c-></code></a> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-deviceorientationeventinit-gamma"><code><c- g>gamma</c-></code></a> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-default="false" data-type="boolean " href="#dom-deviceorientationeventinit-absolute"><code><c- g>absolute</c-></code></a> = <c- b>false</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-deviceorientationeventinit-alpha"><code><c- g>alpha</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-deviceorientationeventinit-beta"><code><c- g>beta</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-deviceorientationeventinit-gamma"><code><c- g>gamma</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-default="false" data-type="boolean" href="#dom-deviceorientationeventinit-absolute"><code><c- g>absolute</c-></code></a> = <c- b>false</c->;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/nav-history-apis.html#window"><c- g>Window</c-></a> {
@@ -2495,22 +2565,22 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-devicemotioneventaccelerationinit"><code><c- g>DeviceMotionEventAccelerationInit</c-></code></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-devicemotioneventaccelerationinit-x"><code><c- g>x</c-></code></a> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-devicemotioneventaccelerationinit-y"><code><c- g>y</c-></code></a> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-devicemotioneventaccelerationinit-z"><code><c- g>z</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-devicemotioneventaccelerationinit-x"><code><c- g>x</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-devicemotioneventaccelerationinit-y"><code><c- g>y</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-devicemotioneventaccelerationinit-z"><code><c- g>z</c-></code></a> = <c- b>null</c->;
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-devicemotioneventrotationrateinit"><code><c- g>DeviceMotionEventRotationRateInit</c-></code></a> {
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-devicemotioneventrotationrateinit-alpha"><code><c- g>alpha</c-></code></a> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-devicemotioneventrotationrateinit-beta"><code><c- g>beta</c-></code></a> = <c- b>null</c->;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double? " href="#dom-devicemotioneventrotationrateinit-gamma"><code><c- g>gamma</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-devicemotioneventrotationrateinit-alpha"><code><c- g>alpha</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-devicemotioneventrotationrateinit-beta"><code><c- g>beta</c-></code></a> = <c- b>null</c->;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a>? <a data-default="null" data-type="double?" href="#dom-devicemotioneventrotationrateinit-gamma"><code><c- g>gamma</c-></code></a> = <c- b>null</c->;
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-devicemotioneventinit"><code><c- g>DeviceMotionEventInit</c-></code></a> : <a data-link-type="idl-name" href="https://dom.spec.whatwg.org/#dictdef-eventinit"><c- n>EventInit</c-></a> {
-    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit"><c- n>DeviceMotionEventAccelerationInit</c-></a> <a data-type="DeviceMotionEventAccelerationInit " href="#dom-devicemotioneventinit-acceleration"><code><c- g>acceleration</c-></code></a>;
-    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit"><c- n>DeviceMotionEventAccelerationInit</c-></a> <a data-type="DeviceMotionEventAccelerationInit " href="#dom-devicemotioneventinit-accelerationincludinggravity"><code><c- g>accelerationIncludingGravity</c-></code></a>;
-    <a data-link-type="idl-name" href="#dictdef-devicemotioneventrotationrateinit"><c- n>DeviceMotionEventRotationRateInit</c-></a> <a data-type="DeviceMotionEventRotationRateInit " href="#dom-devicemotioneventinit-rotationrate"><code><c- g>rotationRate</c-></code></a>;
-    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a> <a data-default="0" data-type="double " href="#dom-devicemotioneventinit-interval"><code><c- g>interval</c-></code></a> = 0;
+    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit"><c- n>DeviceMotionEventAccelerationInit</c-></a> <a data-type="DeviceMotionEventAccelerationInit" href="#dom-devicemotioneventinit-acceleration"><code><c- g>acceleration</c-></code></a>;
+    <a data-link-type="idl-name" href="#dictdef-devicemotioneventaccelerationinit"><c- n>DeviceMotionEventAccelerationInit</c-></a> <a data-type="DeviceMotionEventAccelerationInit" href="#dom-devicemotioneventinit-accelerationincludinggravity"><code><c- g>accelerationIncludingGravity</c-></code></a>;
+    <a data-link-type="idl-name" href="#dictdef-devicemotioneventrotationrateinit"><c- n>DeviceMotionEventRotationRateInit</c-></a> <a data-type="DeviceMotionEventRotationRateInit" href="#dom-devicemotioneventinit-rotationrate"><code><c- g>rotationRate</c-></code></a>;
+    <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-double"><c- b>double</c-></a> <a data-default="0" data-type="double" href="#dom-devicemotioneventinit-interval"><code><c- g>interval</c-></code></a> = 0;
 };
 
 </pre>
@@ -2905,455 +2975,8 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
     </div>
    </div>
   </details>
-<script>/* Boilerplate: script-dfn-panel */
-"use strict";
-{
-    const dfnsJson = window.dfnsJson || {};
-
-    function genDfnPanel({dfnID, url, dfnText, refSections, external}) {
-        return mk.aside({
-            class: "dfn-panel",
-            id: `infopanel-for-${dfnID}`,
-            "data-for": dfnID,
-            "aria-labelled-by":`infopaneltitle-for-${dfnID}`,
-            },
-            mk.span({id:`infopaneltitle-for-${dfnID}`, style:"display:none"},
-                `Info about the '${dfnText}' ${external?"external":""} reference.`),
-            mk.a({href:url}, url),
-            mk.b({}, "Referenced in:"),
-            mk.ul({},
-                ...refSections.map(section=>
-                    mk.li({},
-                        ...section.refs.map((ref, refI)=>
-                            [
-                                mk.a({
-                                    href: `#${ref.id}`
-                                    },
-                                    (refI == 0) ? section.title : `(${refI + 1})`
-                                ),
-                                " ",
-                            ]
-                        ),
-                    ),
-                ),
-            ),
-        );
-    }
-
-    function genAllDfnPanels() {
-        for(const panelData of Object.values(window.dfnpanelData)) {
-            const dfnID = panelData.dfnID;
-            const dfn = document.getElementById(dfnID);
-            if(!dfn) {
-                console.log(`Can't find dfn#${dfnID}.`, panelData);
-            } else {
-                const panel = genDfnPanel(panelData);
-                append(document.body, panel);
-                insertDfnPopupAction(dfn, panel)
-            }
-        }
-    }
-
-    document.addEventListener("DOMContentLoaded", ()=>{
-        genAllDfnPanels();
-
-        // Add popup behavior to all dfns to show the corresponding dfn-panel.
-        var dfns = queryAll('.dfn-paneled');
-        for(let dfn of dfns) { ; }
-
-        document.body.addEventListener("click", (e) => {
-            // If not handled already, just hide all dfn panels.
-            hideAllDfnPanels();
-        });
-    })
-
-
-    function hideAllDfnPanels() {
-        // Turn off any currently "on" or "activated" panels.
-        queryAll(".dfn-panel.on, .dfn-panel.activated").forEach(el=>hideDfnPanel(el));
-    }
-
-    function showDfnPanel(dfnPanel, dfn) {
-        hideAllDfnPanels(); // Only display one at this time.
-        dfn.setAttribute("aria-expanded", "true");
-        dfnPanel.classList.add("on");
-        dfnPanel.style.left = "5px";
-        dfnPanel.style.top = "0px";
-        const panelRect = dfnPanel.getBoundingClientRect();
-        const panelWidth = panelRect.right - panelRect.left;
-        if (panelRect.right > document.body.scrollWidth) {
-            // Panel's overflowing the screen.
-            // Just drop it below the dfn and flip it rightward instead.
-            // This still wont' fix things if the screen is *really* wide,
-            // but fixing that's a lot harder without 'anchor()'.
-            dfnPanel.style.top = "1.5em";
-            dfnPanel.style.left = "auto";
-            dfnPanel.style.right = "0px";
-        }
-    }
-
-    function pinDfnPanel(dfnPanel) {
-        // Switch it to "activated" state, which pins it.
-        dfnPanel.classList.add("activated");
-        dfnPanel.style.left = null;
-        dfnPanel.style.top = null;
-    }
-
-    function hideDfnPanel(dfnPanel, dfn) {
-        if(!dfn) {
-            dfn = document.getElementById(dfnPanel.getAttribute("data-for"));
-        }
-        dfn.setAttribute("aria-expanded", "false")
-        dfnPanel.classList.remove("on");
-        dfnPanel.classList.remove("activated");
-    }
-
-    function toggleDfnPanel(dfnPanel, dfn) {
-        if(dfnPanel.classList.contains("on")) {
-            hideDfnPanel(dfnPanel, dfn);
-        } else {
-            showDfnPanel(dfnPanel, dfn);
-        }
-    }
-
-    function insertDfnPopupAction(dfn, dfnPanel) {
-        // Find dfn panel
-        const panelWrapper = document.createElement('span');
-        panelWrapper.appendChild(dfnPanel);
-        panelWrapper.style.position = "relative";
-        panelWrapper.style.height = "0px";
-        dfn.insertAdjacentElement("afterend", panelWrapper);
-        dfn.setAttribute('role', 'button');
-        dfn.setAttribute('aria-expanded', 'false')
-        dfn.tabIndex = 0;
-        dfn.classList.add('has-dfn-panel');
-        dfn.addEventListener('click', (event) => {
-            showDfnPanel(dfnPanel, dfn);
-            event.stopPropagation();
-        });
-        dfn.addEventListener('keypress', (event) => {
-            const kc = event.keyCode;
-            // 32->Space, 13->Enter
-            if(kc == 32 || kc == 13) {
-                toggleDfnPanel(dfnPanel, dfn);
-                event.stopPropagation();
-                event.preventDefault();
-            }
-        });
-
-        dfnPanel.addEventListener('click', (event) => {
-            if (event.target.nodeName == 'A') {
-                pinDfnPanel(dfnPanel);
-            }
-            event.stopPropagation();
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+"dom-window-ondevicemotion": {"dfnID":"dom-window-ondevicemotion","dfnText":"ondevicemotion","external":false,"refSections":[{"refs":[{"id":"ref-for-dom-window-ondevicemotion"}],"title":"6.3.3. The DeviceMotionEvent interface"}],"url":"#dom-window-ondevicemotion"},
+"dom-window-ondeviceorientation": {"dfnID":"dom-window-ondeviceorientation","dfnText":"ondeviceorientation","external":false,"refSections":[{"refs":[{"id":"ref-for-dom-window-ondeviceorientation"}],"title":"6.1. deviceorientation Event"}],"url":"#dom-window-ondeviceorientation"},
+"dom-window-ondeviceorientationabsolute": {"dfnID":"dom-window-ondeviceorientationabsolute","dfnText":"ondeviceorientationabsolute","external":false,"refSections":[{"refs":[{"id":"ref-for-dom-window-ondeviceorientationabsolute"},{"id":"ref-for-dom-window-ondeviceorientationabsolute\u2460"}],"title":"6.2. deviceorientationabsolute Event"}],"url":"#dom-window-ondeviceorientationabsolute"},
+"e270bd2a": {"dfnID":"e270bd2a","dfnText":"task","external":true,"refSections":[{"refs":[{"id":"ref-for-concept-task"}],"title":"5. Task Source"}],"url":"https://html.spec.whatwg.org/multipage/webappapis.html#concept-task"},
+"e99bd18e": {"dfnID":"e99bd18e","dfnText":"relevant global object","external":true,"refSections":[{"refs":[{"id":"ref-for-concept-relevant-global"}],"title":"6.1. deviceorientation Event"},{"refs":[{"id":"ref-for-concept-relevant-global\u2460"}],"title":"6.3.3. The DeviceMotionEvent interface"}],"url":"https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global"},
+"f0951476": {"dfnID":"f0951476","dfnText":"EventHandler","external":true,"refSections":[{"refs":[{"id":"ref-for-eventhandler"}],"title":"6.1. deviceorientation Event"},{"refs":[{"id":"ref-for-eventhandler\u2460"}],"title":"6.2. deviceorientationabsolute Event"},{"refs":[{"id":"ref-for-eventhandler\u2461"}],"title":"6.3.3. The DeviceMotionEvent interface"}],"url":"https://html.spec.whatwg.org/multipage/webappapis.html#eventhandler"},
+"f0a32052": {"dfnID":"f0a32052","dfnText":"can provide readings flag","external":true,"refSections":[{"refs":[{"id":"ref-for-virtual-sensor-can-provide-readings-flag"}],"title":"6.1. deviceorientation Event"},{"refs":[{"id":"ref-for-virtual-sensor-can-provide-readings-flag\u2460"},{"id":"ref-for-virtual-sensor-can-provide-readings-flag\u2461"},{"id":"ref-for-virtual-sensor-can-provide-readings-flag\u2462"}],"title":"6.3.3. The DeviceMotionEvent interface"}],"url":"https://w3c.github.io/sensors/#virtual-sensor-can-provide-readings-flag"},
+"f23dc013": {"dfnID":"f23dc013","dfnText":"child navigable","external":true,"refSections":[{"refs":[{"id":"ref-for-child-navigable"}],"title":"7. Security and privacy considerations"}],"url":"https://html.spec.whatwg.org/multipage/document-sequences.html#child-navigable"},
+"fa818daf": {"dfnID":"fa818daf","dfnText":"get a property","external":true,"refSections":[{"refs":[{"id":"ref-for-dfn-getting-properties"},{"id":"ref-for-dfn-getting-properties\u2460"},{"id":"ref-for-dfn-getting-properties\u2461"}],"title":"9.1.1. Parse orientation reading data algorithm"}],"url":"https://w3c.github.io/webdriver/#dfn-getting-properties"},
+"fire-an-orientation-event": {"dfnID":"fire-an-orientation-event","dfnText":"fire an orientation event","external":false,"refSections":[{"refs":[{"id":"ref-for-fire-an-orientation-event"}],"title":"6.1. deviceorientation Event"},{"refs":[{"id":"ref-for-fire-an-orientation-event\u2460"}],"title":"6.2. deviceorientationabsolute Event"}],"url":"#fire-an-orientation-event"},
+"gyroscope-virtual-sensor-type": {"dfnID":"gyroscope-virtual-sensor-type","dfnText":"gyroscope","external":false,"refSections":[],"url":"#gyroscope-virtual-sensor-type"},
+"linear-acceleration-virtual-sensor-type": {"dfnID":"linear-acceleration-virtual-sensor-type","dfnText":"linear-acceleration","external":false,"refSections":[],"url":"#linear-acceleration-virtual-sensor-type"},
+"linear-device-acceleration": {"dfnID":"linear-device-acceleration","dfnText":"Linear device acceleration","external":false,"refSections":[{"refs":[{"id":"ref-for-linear-device-acceleration"},{"id":"ref-for-linear-device-acceleration\u2460"},{"id":"ref-for-linear-device-acceleration\u2461"}],"title":"3.2. Device Motion"},{"refs":[{"id":"ref-for-linear-device-acceleration\u2462"},{"id":"ref-for-linear-device-acceleration\u2463"},{"id":"ref-for-linear-device-acceleration\u2464"},{"id":"ref-for-linear-device-acceleration\u2465"}],"title":"6.3.3. The DeviceMotionEvent interface"},{"refs":[{"id":"ref-for-linear-device-acceleration\u2466"}],"title":"9.2. Device Motion Automation"}],"url":"#linear-device-acceleration"},
+"parse-orientation-data-reading": {"dfnID":"parse-orientation-data-reading","dfnText":"parse orientation data reading","external":false,"refSections":[{"refs":[{"id":"ref-for-parse-orientation-data-reading"}],"title":"9.1.2. The \"absolute-orientation\" virtual sensor type"},{"refs":[{"id":"ref-for-parse-orientation-data-reading\u2460"}],"title":"9.1.3. The \"relative-orientation\" virtual sensor type"}],"url":"#parse-orientation-data-reading"},
+"permissiondef-accelerometer": {"dfnID":"permissiondef-accelerometer","dfnText":"\"accelerometer\"","external":false,"refSections":[{"refs":[{"id":"ref-for-permissiondef-accelerometer"},{"id":"ref-for-permissiondef-accelerometer\u2460"},{"id":"ref-for-permissiondef-accelerometer\u2461"}],"title":"4. Permissions"},{"refs":[{"id":"ref-for-permissiondef-accelerometer\u2462"},{"id":"ref-for-permissiondef-accelerometer\u2463"},{"id":"ref-for-permissiondef-accelerometer\u2464"},{"id":"ref-for-permissiondef-accelerometer\u2465"}],"title":"6.1. deviceorientation Event"},{"refs":[{"id":"ref-for-permissiondef-accelerometer\u2466"},{"id":"ref-for-permissiondef-accelerometer\u2467"},{"id":"ref-for-permissiondef-accelerometer\u2468"}],"title":"6.3.3. The DeviceMotionEvent interface"}],"url":"#permissiondef-accelerometer"},
+"permissiondef-gyroscope": {"dfnID":"permissiondef-gyroscope","dfnText":"\"gyroscope\"","external":false,"refSections":[{"refs":[{"id":"ref-for-permissiondef-gyroscope"},{"id":"ref-for-permissiondef-gyroscope\u2460"},{"id":"ref-for-permissiondef-gyroscope\u2461"}],"title":"4. Permissions"},{"refs":[{"id":"ref-for-permissiondef-gyroscope\u2462"},{"id":"ref-for-permissiondef-gyroscope\u2463"},{"id":"ref-for-permissiondef-gyroscope\u2464"},{"id":"ref-for-permissiondef-gyroscope\u2465"}],"title":"6.1. deviceorientation Event"},{"refs":[{"id":"ref-for-permissiondef-gyroscope\u2466"},{"id":"ref-for-permissiondef-gyroscope\u2467"},{"id":"ref-for-permissiondef-gyroscope\u2468"}],"title":"6.3.3. The DeviceMotionEvent interface"}],"url":"#permissiondef-gyroscope"},
+"permissiondef-magnetometer": {"dfnID":"permissiondef-magnetometer","dfnText":"\"magnetometer\"","external":false,"refSections":[{"refs":[{"id":"ref-for-permissiondef-magnetometer"},{"id":"ref-for-permissiondef-magnetometer\u2460"}],"title":"4. Permissions"},{"refs":[{"id":"ref-for-permissiondef-magnetometer\u2461"},{"id":"ref-for-permissiondef-magnetometer\u2462"},{"id":"ref-for-permissiondef-magnetometer\u2463"}],"title":"6.1. deviceorientation Event"}],"url":"#permissiondef-magnetometer"},
+"relative-device-orientation": {"dfnID":"relative-device-orientation","dfnText":"Relative device orientation","external":false,"refSections":[{"refs":[{"id":"ref-for-relative-device-orientation"}],"title":"4. Permissions"},{"refs":[{"id":"ref-for-relative-device-orientation\u2460"},{"id":"ref-for-relative-device-orientation\u2461"},{"id":"ref-for-relative-device-orientation\u2462"}],"title":"6.1. deviceorientation Event"}],"url":"#relative-device-orientation"},
+"relative-orientation-virtual-sensor-type": {"dfnID":"relative-orientation-virtual-sensor-type","dfnText":"relative-orientation","external":false,"refSections":[{"refs":[{"id":"ref-for-relative-orientation-virtual-sensor-type"}],"title":"6.1. deviceorientation Event"}],"url":"#relative-orientation-virtual-sensor-type"},
+"rotation-rate": {"dfnID":"rotation-rate","dfnText":"rotation rate","external":false,"refSections":[{"refs":[{"id":"ref-for-rotation-rate"}],"title":"3.2. Device Motion"},{"refs":[{"id":"ref-for-rotation-rate\u2460"}],"title":"6.3.2. The DeviceMotionEventRotationRate interface"},{"refs":[{"id":"ref-for-rotation-rate\u2461"},{"id":"ref-for-rotation-rate\u2462"},{"id":"ref-for-rotation-rate\u2463"}],"title":"6.3.3. The DeviceMotionEvent interface"},{"refs":[{"id":"ref-for-rotation-rate\u2464"}],"title":"9.2. Device Motion Automation"}],"url":"#rotation-rate"},
+"significant-change-in-orientation": {"dfnID":"significant-change-in-orientation","dfnText":"significant change in orientation","external":false,"refSections":[{"refs":[{"id":"ref-for-significant-change-in-orientation"},{"id":"ref-for-significant-change-in-orientation\u2460"},{"id":"ref-for-significant-change-in-orientation\u2461"}],"title":"6.1. deviceorientation Event"},{"refs":[{"id":"ref-for-significant-change-in-orientation\u2462"}],"title":"6.2. deviceorientationabsolute Event"}],"url":"#significant-change-in-orientation"},
+};
+
+document.addEventListener("DOMContentLoaded", ()=>{
+    genAllDfnPanels();
+
+    document.body.addEventListener("click", (e) => {
+        // If not handled already, just hide all dfn panels.
+        hideAllDfnPanels();
+    });
+});
+
+window.addEventListener("resize", () => {
+    // Pin any visible dfn panel
+    queryAll(".dfn-panel.on, .dfn-panel.activated").forEach(el=>positionDfnPanel(el));
+});
+
+function genAllDfnPanels() {
+    for(const panelData of Object.values(dfnPanelData)) {
+        const dfnID = panelData.dfnID;
+        const dfn = document.getElementById(dfnID);
+        if(!dfn) {
+            console.log(`Can't find dfn#${dfnID}.`, panelData);
+            continue;
+        }
+        dfn.panelData = panelData;
+        insertDfnPopupAction(dfn);
+    }
+}
+
+function genDfnPanel(dfn, { dfnID, url, dfnText, refSections, external }) {
+    const dfnPanel = mk.aside({
+        class: "dfn-panel on",
+        id: `infopanel-for-${dfnID}`,
+        "data-for": dfnID,
+        "aria-labelled-by":`infopaneltitle-for-${dfnID}`,
+        },
+        mk.span({id:`infopaneltitle-for-${dfnID}`, style:"display:none"},
+            `Info about the '${dfnText}' ${external?"external":""} reference.`),
+        mk.a({href:url, class:"dfn-link"}, url),
+        refSections.length == 0 ? [] :
+            mk.b({}, "Referenced in:"),
+            mk.ul({},
+                ...refSections.map(section=>
+                    mk.li({},
+                        ...section.refs.map((ref, refI)=>
+                            [
+                                mk.a({ href: `#${ref.id}` },
+                                    (refI == 0) ? section.title : `(${refI + 1})`
+                                ),
+                                " ",
+                            ]
+                        ),
+                    ),
+                ),
+            ),
+        genLinkingSyntaxes(dfn),
+    );
+
+    dfnPanel.addEventListener('click', (event) => {
+        if (event.target.nodeName == 'A') {
+            scrollToTargetAndHighlight(event);
+            pinDfnPanel(dfnPanel);
+        }
+        event.stopPropagation();
+        refocusOnTarget(event);
+    });
+    dfnPanel.addEventListener('keydown', (event) => {
+        if(event.keyCode == 27) { // Escape key
+            hideDfnPanel({dfnPanel});
+            event.stopPropagation();
+            event.preventDefault();
+        }
+    });
+
+    dfnPanel.dfn = dfn;
+    dfn.dfnPanel = dfnPanel;
+    return dfnPanel;
+}
+
+
+
+function hideAllDfnPanels() {
+    // Delete the currently-active dfn panel.
+    queryAll(".dfn-panel").forEach(dfnPanel=>hideDfnPanel({dfnPanel}));
+}
+
+function showDfnPanel(dfn) {
+    hideAllDfnPanels(); // Only display one at a time.
+
+    dfn.setAttribute("aria-expanded", "true");
+
+    const dfnPanel = genDfnPanel(dfn, dfn.panelData);
+
+    // Give the dfn a unique tabindex, and then
+    // give all the tabbable panel bits successive indexes.
+    let tabIndex = 100;
+    dfn.tabIndex = tabIndex++;
+    const tabbable = dfnPanel.querySelectorAll(":is(a, button)");
+    for (const el of tabbable) {
+        el.tabIndex = tabIndex++;
+    }
+
+    append(document.body, dfnPanel);
+    positionDfnPanel(dfnPanel);
+}
+
+function positionDfnPanel(dfnPanel) {
+    const dfn = dfnPanel.dfn;
+    const dfnPos = getBounds(dfn);
+    dfnPanel.style.top = dfnPos.bottom + "px";
+    dfnPanel.style.left = dfnPos.left + "px";
+
+    const panelPos = dfnPanel.getBoundingClientRect();
+    const panelMargin = 8;
+    const maxRight = document.body.parentNode.clientWidth - panelMargin;
+    if (panelPos.right > maxRight) {
+        const overflowAmount = panelPos.right - maxRight;
+        const newLeft = Math.max(panelMargin, dfnPos.left - overflowAmount);
+        dfnPanel.style.left = newLeft + "px";
+    }
+}
+
+function pinDfnPanel(dfnPanel) {
+    // Switch it to "activated" state, which pins it.
+    dfnPanel.classList.add("activated");
+    dfnPanel.style.position = "fixed";
+    dfnPanel.style.left = null;
+    dfnPanel.style.top = null;
+}
+
+function hideDfnPanel({dfn, dfnPanel}) {
+    if(!dfnPanel) dfnPanel = dfn.dfnPanel;
+    if(!dfn) dfn = dfnPanel.dfn;
+    dfn.dfnPanel = undefined;
+    dfnPanel.dfn = undefined;
+    dfn.setAttribute("aria-expanded", "false");
+    dfn.tabIndex = undefined;
+    dfnPanel.remove()
+}
+
+function toggleDfnPanel(dfn) {
+    if(dfn.dfnPanel) {
+        hideDfnPanel(dfn);
+    } else {
+        showDfnPanel(dfn);
+    }
+}
+
+function insertDfnPopupAction(dfn) {
+    dfn.setAttribute('role', 'button');
+    dfn.setAttribute('aria-expanded', 'false')
+    dfn.tabIndex = 0;
+    dfn.classList.add('has-dfn-panel');
+    dfn.addEventListener('click', (event) => {
+        toggleDfnPanel(dfn);
+        event.stopPropagation();
+    });
+    dfn.addEventListener('keypress', (event) => {
+        const kc = event.keyCode;
+        // 32->Space, 13->Enter
+        if(kc == 32 || kc == 13) {
+            toggleDfnPanel(dfn);
+            event.stopPropagation();
+            event.preventDefault();
+        }
+    });
+}
+
+function refocusOnTarget(event) {
+    const target = event.target;
+    setTimeout(() => {
+        // Refocus on the event.target element.
+        // This is needed after browser scrolls to the destination.
+        target.focus();
+    });
+}
+
+// TODO: shared util
+// Returns the root-level absolute position {left and top} of element.
+function getBounds(el, relativeTo=document.body) {
+    const relativeRect = relativeTo.getBoundingClientRect();
+    const elRect = el.getBoundingClientRect();
+    const top = elRect.top - relativeRect.top;
+    const left = elRect.left - relativeRect.left;
+    return {
+        top,
+        left,
+        bottom: top + elRect.height,
+        right: left + elRect.width,
+    }
+}
+
+function scrollToTargetAndHighlight(event) {
+    let hash = event.target.hash;
+    if (hash) {
+        hash = decodeURIComponent(hash.substring(1));
+        const dest = document.getElementById(hash);
+        if (dest) {
+            dest.classList.add('highlighted');
+            setTimeout(() => dest.classList.remove('highlighted'), 1000);
+        }
+    }
+}
+
+// Functions, divided by link type, that wrap an autolink's
+// contents with the appropriate outer syntax.
+// Alternately, a string naming another type they format
+// the same as.
+function needsFor(type) {
+    switch(type) {
+        case "descriptor":
+        case "value":
+        case "element-attr":
+        case "attr-value":
+        case "element-state":
+        case "method":
+        case "constructor":
+        case "argument":
+        case "attribute":
+        case "const":
+        case "dict-member":
+        case "event":
+        case "enum-value":
+        case "stringifier":
+        case "serializer":
+        case "iterator":
+        case "maplike":
+        case "setlike":
+        case "state":
+        case "mode":
+        case "context":
+        case "facet": return true;
+
+        default: return false;
+    }
+}
+function refusesFor(type) {
+    switch(type) {
+        case "property":
+        case "element":
+        case "interface":
+        case "namespace":
+        case "callback":
+        case "dictionary":
+        case "enum":
+        case "exception":
+        case "typedef":
+        case "http-header":
+        case "permission": return true;
+
+        default: return false;
+    }
+}
+function linkFormatterFromType(type) {
+    switch(type) {
+        case 'scheme':
+        case 'permission':
+        case 'dfn': return (text) => `[=${text}=]`;
+
+        case 'abstract-op': return (text) => `[\$${text}\$]`;
+
+        case 'function':
+        case 'at-rule':
+        case 'selector':
+        case 'value': return (text) => `''${text}''`;
+
+        case 'http-header': return (text) => `[:${text}:]`;
+
+        case 'interface':
+        case 'constructor':
+        case 'method':
+        case 'argument':
+        case 'attribute':
+        case 'callback':
+        case 'dictionary':
+        case 'dict-member':
+        case 'enum':
+        case 'enum-value':
+        case 'exception':
+        case 'const':
+        case 'typedef':
+        case 'stringifier':
+        case 'serializer':
+        case 'iterator':
+        case 'maplike':
+        case 'setlike':
+        case 'extended-attribute':
+        case 'event':
+        case 'idl': return (text) => `{{${text}}}`;
+
+        case 'element-state':
+        case 'element-attr':
+        case 'attr-value':
+        case 'element': return (element) => `<{${element}}>`;
+
+        case 'grammar': return (text) => `${text} (within a <pre class=prod>)`;
+
+        case 'type': return (text)=> `<<${text}>>`;
+
+        case 'descriptor':
+        case 'property': return (text) => `'${text}'`;
+
+        default: return;
+    };
+};
+
+function genLinkingSyntaxes(dfn) {
+    if(dfn.tagName != "DFN") return;
+
+    const type = dfn.getAttribute('data-dfn-type');
+    if(!type) {
+        console.log(`<dfn> doesn't have a data-dfn-type:`, dfn);
+        return [];
+    }
+
+    // Return a function that wraps link text based on the type
+    const linkFormatter = linkFormatterFromType(type);
+    if(!linkFormatter) {
+        console.log(`<dfn> has an unknown data-dfn-type:`, dfn);
+        return [];
+    }
+
+    let ltAlts;
+    if(dfn.hasAttribute('data-lt')) {
+        ltAlts = dfn.getAttribute('data-lt')
+            .split("|")
+            .map(x=>x.trim());
+    } else {
+        ltAlts = [dfn.textContent.trim()];
+    }
+    if(type == "type") {
+        // lt of "<foo>", but "foo" is the interior;
+        // <<foo/bar>> is how you write it with a for,
+        // not <foo/<bar>> or whatever.
+        for(var i = 0; i < ltAlts.length; i++) {
+            const lt = ltAlts[i];
+            const match = /<(.*)>/.exec(lt);
+            if(match) { ltAlts[i] = match[1]; }
+        }
+    }
+
+    let forAlts;
+    if(dfn.hasAttribute('data-dfn-for')) {
+        forAlts = dfn.getAttribute('data-dfn-for')
+            .split(",")
+            .map(x=>x.trim());
+    } else {
+        forAlts = [''];
+    }
+
+    let linkingSyntaxes = [];
+    if(!needsFor(type)) {
+        for(const lt of ltAlts) {
+            linkingSyntaxes.push(linkFormatter(lt));
+        }
+    }
+    if(!refusesFor(type)) {
+        for(const f of forAlts) {
+            linkingSyntaxes.push(linkFormatter(`${f}/${ltAlts[0]}`))
+        }
+    }
+    return [
+        mk.b({}, 'Possible linking syntaxes:'),
+        mk.ul({},
+            ...linkingSyntaxes.map(link => {
+                const copyLink = async () =>
+                    await navigator.clipboard.writeText(link);
+                return mk.li({},
+                    mk.div({ class: 'link-item' },
+                        mk.button({
+                            class: 'copy-icon', title: 'Copy',
+                            type: 'button',
+                            _onclick: copyLink,
+                            tabindex: 0,
+                        }, mk.span({ class: 'icon' }) ),
+                        mk.span({}, link)
+                    )
+                );
+            })
+        )
+    ];
+}
 }
 </script>
 <script>/* Boilerplate: script-position-annos */
 "use strict";
 {
-
 function repositionAnnoPanels(){
     const panels = [...document.querySelectorAll("[data-anno-for]")];
+    hydratePanels(panels);
+    let vSoFar = 0;
+    for(const panel of panels.sort(cmpTops)) {
+        if(panel.top < vSoFar) {
+            panel.top = vSoFar;
+            panel.style.top = vSoFar + "px";
+        }
+        vSoFar = panel.top + panel.height + 15;
+    }
+}
+function hydratePanels(panels) {
     const main = document.querySelector("main");
     let mainRect;
     if(main) mainRect = main.getBoundingClientRect();
+    // First display them all, if they're not already visible.
+    for(const panel of panels) {
+        panel.classList.remove("unpositioned");
+    }
+    // Measure them all
     for(const panel of panels) {
         const dfn = document.getElementById(panel.getAttribute("data-anno-for"));
         if(!dfn) {
             console.log("Can't find the annotation panel target:", panel);
             continue;
         }
-        const rect = dfn.getBoundingClientRect();
-        const top = window.scrollY + rect.top
-        panel.style.top = top + "px";
-        panel.top = top;
-        panel.height = rect.height;
-        panel.classList.remove("unpositioned");
-        const panelRect = panel.getBoundingClientRect()
+        panel.dfn = dfn;
+        panel.top = window.scrollY + dfn.getBoundingClientRect().top;
+        let panelRect = panel.getBoundingClientRect();
+        panel.height = panelRect.height;
         if(main) {
-            panel.classList.toggle("overlapping-main", panelRect.left < mainRect.right)
+            panel.overlappingMain = panelRect.left < mainRect.right;
+        } else {
+            panel.overlappingMain = false;
         }
     }
-    let vSoFar = 0;
-    for(const panel of panels.sort(cmpTops)) {
-        if(panel.top < vSoFar) {
-            panel.top = vSoFar;
-            panel.style.top = vSoFar + "px";
-        }
-        vSoFar = panel.top + panel.height + 15;
+    // And finally position them
+    for(const panel of panels) {
+        const dfn = panel.dfn;
+        if(!dfn) continue;
+        panel.style.top = panel.top + "px";
+        panel.classList.toggle("overlapping-main", panel.overlappingMain);
     }
 }
 
@@ -3593,101 +3779,429 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 window.addEventListener("resize", repositionAnnoPanels);
 }
 </script>
+<script>/* Boilerplate: script-ref-hints */
+"use strict";
+{
+let refsData = {
+"#absolute-orientation": {"displayText":"absolute orientation","export":true,"for_":[],"level":"","normative":true,"shortname":"orientation-event","spec":"orientation-event","status":"local","text":"absolute orientation","type":"dfn","url":"#absolute-orientation"},
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+"https://infra.spec.whatwg.org/#map-key": {"displayText":"key","export":true,"for_":["map"],"level":"1","normative":true,"shortname":"infra","spec":"infra","status":"current","text":"key","type":"dfn","url":"https://infra.spec.whatwg.org/#map-key"},
+"https://infra.spec.whatwg.org/#map-value": {"displayText":"value","export":true,"for_":["map"],"level":"1","normative":true,"shortname":"infra","spec":"infra","status":"current","text":"value","type":"dfn","url":"https://infra.spec.whatwg.org/#map-value"},
+"https://infra.spec.whatwg.org/#ordered-map": {"displayText":"ordered map","export":true,"for_":[],"level":"1","normative":true,"shortname":"infra","spec":"infra","status":"current","text":"ordered map","type":"dfn","url":"https://infra.spec.whatwg.org/#ordered-map"},
+"https://infra.spec.whatwg.org/#set-append": {"displayText":"append","export":true,"for_":["set"],"level":"1","normative":true,"shortname":"infra","spec":"infra","status":"current","text":"append","type":"dfn","url":"https://infra.spec.whatwg.org/#set-append"},
+"https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object-objects": {"displayText":"Object","export":true,"for_":[],"level":"1","normative":true,"shortname":"ecmascript","spec":"ecmascript","status":"current","text":"Object","type":"interface","url":"https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object-objects"},
+"https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-objects": {"displayText":"Number","export":true,"for_":[],"level":"1","normative":true,"shortname":"ecmascript","spec":"ecmascript","status":"current","text":"Number","type":"interface","url":"https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-objects"},
+"https://w3c.github.io/accelerometer/#device-coordinate-system": {"displayText":"device coordinate system","export":true,"for_":[],"level":"1","normative":true,"shortname":"accelerometer","spec":"accelerometer","status":"current","text":"device coordinate system","type":"dfn","url":"https://w3c.github.io/accelerometer/#device-coordinate-system"},
+"https://w3c.github.io/orientation-sensor/#earths-reference-coordinate-system": {"displayText":"Earth's reference coordinate system","export":true,"for_":[],"level":"1","normative":true,"shortname":"orientation-sensor","spec":"orientation-sensor","status":"current","text":"earth's reference coordinate system","type":"dfn","url":"https://w3c.github.io/orientation-sensor/#earths-reference-coordinate-system"},
+"https://w3c.github.io/permissions/#dfn-express-permission": {"displayText":"express permission","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"express permission","type":"dfn","url":"https://w3c.github.io/permissions/#dfn-express-permission"},
+"https://w3c.github.io/permissions/#dfn-getting-the-current-permission-state": {"displayText":"getting the current permission state","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"getting the current permission state","type":"dfn","url":"https://w3c.github.io/permissions/#dfn-getting-the-current-permission-state"},
+"https://w3c.github.io/permissions/#dfn-granted": {"displayText":"granted","export":true,"for_":["permission"],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"granted","type":"dfn","url":"https://w3c.github.io/permissions/#dfn-granted"},
+"https://w3c.github.io/permissions/#dfn-permission": {"displayText":"permission","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"permission","type":"dfn","url":"https://w3c.github.io/permissions/#dfn-permission"},
+"https://w3c.github.io/permissions/#dfn-permission-state": {"displayText":"permission state","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"permission state","type":"dfn","url":"https://w3c.github.io/permissions/#dfn-permission-state"},
+"https://w3c.github.io/permissions/#dfn-powerful-feature": {"displayText":"powerful feature","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"powerful feature","type":"dfn","url":"https://w3c.github.io/permissions/#dfn-powerful-feature"},
+"https://w3c.github.io/permissions/#dfn-request-permission-to-use": {"displayText":"requesting permission to use","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"requesting permission to use","type":"dfn","url":"https://w3c.github.io/permissions/#dfn-request-permission-to-use"},
+"https://w3c.github.io/permissions/#dom-permissionstate": {"displayText":"PermissionState","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"PermissionState","type":"enum","url":"https://w3c.github.io/permissions/#dom-permissionstate"},
+"https://w3c.github.io/permissions/#dom-permissionstate-denied": {"displayText":"denied","export":true,"for_":["PermissionState"],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"denied","type":"enum-value","url":"https://w3c.github.io/permissions/#dom-permissionstate-denied"},
+"https://w3c.github.io/permissions/#dom-permissionstate-granted": {"displayText":"granted","export":true,"for_":["PermissionState"],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"granted","type":"enum-value","url":"https://w3c.github.io/permissions/#dom-permissionstate-granted"},
+"https://w3c.github.io/permissions/#dom-permissionstate-prompt": {"displayText":"prompt","export":true,"for_":["PermissionState"],"level":"1","normative":true,"shortname":"permissions","spec":"permissions","status":"current","text":"prompt","type":"enum-value","url":"https://w3c.github.io/permissions/#dom-permissionstate-prompt"},
+"https://w3c.github.io/sensors/#parse-xyz-reading": {"displayText":"Parse XYZ reading","export":true,"for_":[],"level":"1","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"current","text":"parse xyz reading","type":"dfn","url":"https://w3c.github.io/sensors/#parse-xyz-reading"},
+"https://w3c.github.io/sensors/#per-type-virtual-sensor-metadata": {"displayText":"per-type virtual sensor metadata","export":true,"for_":[],"level":"1","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"current","text":"per-type virtual sensor metadata","type":"dfn","url":"https://w3c.github.io/sensors/#per-type-virtual-sensor-metadata"},
+"https://w3c.github.io/sensors/#sensor-reading": {"displayText":"sensor reading","export":true,"for_":[],"level":"1","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"current","text":"sensor reading","type":"dfn","url":"https://w3c.github.io/sensors/#sensor-reading"},
+"https://w3c.github.io/sensors/#virtual-sensor-can-provide-readings-flag": {"displayText":"can provide readings flag","export":true,"for_":[],"level":"","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"anchor-block","text":"can provide readings flag","type":"dfn","url":"https://w3c.github.io/sensors/#virtual-sensor-can-provide-readings-flag"},
+"https://w3c.github.io/sensors/#virtual-sensor-mapping": {"displayText":"virtual sensor mapping","export":true,"for_":[],"level":"","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"anchor-block","text":"virtual sensor mapping","type":"dfn","url":"https://w3c.github.io/sensors/#virtual-sensor-mapping"},
+"https://w3c.github.io/sensors/#virtual-sensor-metadata": {"displayText":"virtual sensor metadata","export":true,"for_":[],"level":"1","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"current","text":"virtual sensor metadata","type":"dfn","url":"https://w3c.github.io/sensors/#virtual-sensor-metadata"},
+"https://w3c.github.io/sensors/#virtual-sensor-metadata-reading-parsing-algorithm": {"displayText":"reading parsing algorithm","export":true,"for_":["virtual sensor metadata"],"level":"1","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"current","text":"reading parsing algorithm","type":"dfn","url":"https://w3c.github.io/sensors/#virtual-sensor-metadata-reading-parsing-algorithm"},
+"https://w3c.github.io/sensors/#virtual-sensor-type": {"displayText":"virtual sensor type","export":true,"for_":[],"level":"1","normative":true,"shortname":"generic-sensor","spec":"generic-sensor","status":"current","text":"virtual sensor type","type":"dfn","url":"https://w3c.github.io/sensors/#virtual-sensor-type"},
+"https://w3c.github.io/webappsec-permissions-policy/#default-allowlist-self": {"displayText":"'self'","export":true,"for_":["default allowlist"],"level":"1","normative":true,"shortname":"permissions-policy","spec":"permissions-policy-1","status":"current","text":"'self'","type":"dfn","url":"https://w3c.github.io/webappsec-permissions-policy/#default-allowlist-self"},
+"https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature": {"displayText":"policy-controlled feature","export":true,"for_":[],"level":"1","normative":true,"shortname":"permissions-policy","spec":"permissions-policy-1","status":"current","text":"policy-controlled feature","type":"dfn","url":"https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature"},
+"https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature-default-allowlist": {"displayText":"default allowlists","export":true,"for_":["policy-controlled feature"],"level":"1","normative":true,"shortname":"permissions-policy","spec":"permissions-policy-1","status":"current","text":"default allowlists","type":"dfn","url":"https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature-default-allowlist"},
+"https://w3c.github.io/webdriver/#dfn-extension-commands": {"displayText":"extension commands","export":true,"for_":[],"level":"2","normative":true,"shortname":"webdriver","spec":"webdriver2","status":"current","text":"extension commands","type":"dfn","url":"https://w3c.github.io/webdriver/#dfn-extension-commands"},
+"https://w3c.github.io/webdriver/#dfn-getting-properties": {"displayText":"get a property","export":true,"for_":[],"level":"","normative":true,"shortname":"webdriver2","spec":"webdriver2","status":"anchor-block","text":"get a property","type":"dfn","url":"https://w3c.github.io/webdriver/#dfn-getting-properties"},
+"https://webidl.spec.whatwg.org/#Exposed": {"displayText":"Exposed","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"Exposed","type":"extended-attribute","url":"https://webidl.spec.whatwg.org/#Exposed"},
+"https://webidl.spec.whatwg.org/#SecureContext": {"displayText":"SecureContext","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"SecureContext","type":"extended-attribute","url":"https://webidl.spec.whatwg.org/#SecureContext"},
+"https://webidl.spec.whatwg.org/#a-new-promise": {"displayText":"a new promise","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"a new promise","type":"dfn","url":"https://webidl.spec.whatwg.org/#a-new-promise"},
+"https://webidl.spec.whatwg.org/#idl-DOMException": {"displayText":"DOMException","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"DOMException","type":"interface","url":"https://webidl.spec.whatwg.org/#idl-DOMException"},
+"https://webidl.spec.whatwg.org/#idl-DOMString": {"displayText":"DOMString","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"DOMString","type":"interface","url":"https://webidl.spec.whatwg.org/#idl-DOMString"},
+"https://webidl.spec.whatwg.org/#idl-boolean": {"displayText":"boolean","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"boolean","type":"interface","url":"https://webidl.spec.whatwg.org/#idl-boolean"},
+"https://webidl.spec.whatwg.org/#idl-double": {"displayText":"double","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"double","type":"interface","url":"https://webidl.spec.whatwg.org/#idl-double"},
+"https://webidl.spec.whatwg.org/#idl-promise": {"displayText":"Promise","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"Promise","type":"interface","url":"https://webidl.spec.whatwg.org/#idl-promise"},
+"https://webidl.spec.whatwg.org/#new": {"displayText":"new","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"new","type":"dfn","url":"https://webidl.spec.whatwg.org/#new"},
+"https://webidl.spec.whatwg.org/#notallowederror": {"displayText":"NotAllowedError","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"NotAllowedError","type":"exception","url":"https://webidl.spec.whatwg.org/#notallowederror"},
+"https://webidl.spec.whatwg.org/#reject": {"displayText":"reject","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"reject","type":"dfn","url":"https://webidl.spec.whatwg.org/#reject"},
+"https://webidl.spec.whatwg.org/#resolve": {"displayText":"resolve","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"resolve","type":"dfn","url":"https://webidl.spec.whatwg.org/#resolve"},
+"https://webidl.spec.whatwg.org/#this": {"displayText":"this","export":true,"for_":[],"level":"1","normative":true,"shortname":"webidl","spec":"webidl","status":"current","text":"this","type":"dfn","url":"https://webidl.spec.whatwg.org/#this"},
+"https://www.w3.org/policies/process/#at-risk": {"displayText":"at risk","export":true,"for_":[],"level":"1","normative":true,"shortname":"w3c-process","spec":"w3c-process","status":"current","text":"at risk","type":"dfn","url":"https://www.w3.org/policies/process/#at-risk"},
+};
+
+function mkRefHint(link, ref) {
+    const linkText = link.textContent;
+    let dfnTextElements = '';
+    if (ref.displayText.toLowerCase() != linkText.toLowerCase()) {
+        // Give the original term if it's being displayed in a different way.
+        // But allow casing differences, they're insignificant.
+        dfnTextElements =
+            mk.li({},
+                mk.b({}, "Term: "),
+                mk.span({}, ref.displayText)
+            );
+    }
+    const forList = ref.for_;
+    let forListElements;
+    if(forList.length == 0) {
+        forListElements = [];
+    } else if(forList.length == 1) {
+        forListElements = mk.li({},
+            mk.b({}, "For: "),
+            mk.span({}, forList[0]),
+        );
+    } else {
+        forListElements = mk.li({},
+            mk.b({}, "For: "),
+            mk.ul({},
+                ...forList.map(forItem =>
+                    mk.li({},
+                        mk.span({}, forItem)
+                    ),
+                ),
+            ),
+        );
+    }
+    const url = ref.url;
+    const safeUrl = encodeURIComponent(url);
+    const hintPanel = mk.aside({
+        class: "ref-hint",
+        id: `ref-hint-for-${safeUrl}`,
+        "data-for": url,
+        "aria-labelled-by": `ref-hint-for-${safeUrl}`,
+    },
+        mk.ul({},
+            dfnTextElements,
+            mk.li({},
+                mk.b({}, "URL: "),
+                mk.a({ href: url, class: "ref" }, url),
+            ),
+            mk.li({},
+                mk.b({}, "Type: "),
+                mk.span({}, `${ref.type}`),
+            ),
+            mk.li({},
+                mk.b({}, "Spec: "),
+                mk.span({}, `${ref.spec ? ref.spec : ''}`),
+            ),
+            forListElements
+        ),
+    );
+    hintPanel.forLink = link;
+    setupRefHintEventListeners(link, hintPanel);
+    return hintPanel;
+}
+
+function hideAllRefHints() {
+    queryAll(".ref-hint").forEach(el=>hideRefHint(el));
+}
+
+function hideRefHint(refHint) {
+    const link = refHint.forLink;
+    link.setAttribute("aria-expanded", "false");
+    if(refHint.teardownEventListeners) {
+        refHint.teardownEventListeners();
+    }
+    refHint.remove();
+}
+
+function showRefHint(link) {
+    if(link.classList.contains("dfn-link")) return;
+    const url = link.getAttribute("href");
+    const ref = refsData[url];
+    if(!ref) return;
+
+    hideAllRefHints(); // Only display one at this time.
+
+    const refHint = mkRefHint(link, ref);
+    append(document.body, refHint);
+    link.setAttribute("aria-expanded", "true");
+    positionRefHint(refHint);
+}
+
+function setupRefHintEventListeners(link, refHint) {
+    if (refHint.teardownEventListeners) return;
+    // Add event handlers to hide the refHint after the user moves away
+    // from both the link and refHint, if not hovering either within one second.
+    let timeout = null;
+    const startHidingRefHint = (event) => {
+        if (timeout) {
+            clearTimeout(timeout);
+        }
+        timeout = setTimeout(() => {
+            hideRefHint(refHint);
+        }, 1000);
+    }
+    const resetHidingRefHint = (event) => {
+        if (timeout) clearTimeout(timeout);
+        timeout = null;
+    };
+    link.addEventListener("mouseleave", startHidingRefHint);
+    link.addEventListener("mouseenter", resetHidingRefHint);
+    link.addEventListener("blur", startHidingRefHint);
+    link.addEventListener("focus", resetHidingRefHint);
+    refHint.addEventListener("mouseleave", startHidingRefHint);
+    refHint.addEventListener("mouseenter", resetHidingRefHint);
+    refHint.addEventListener("blur", startHidingRefHint);
+    refHint.addEventListener("focus", resetHidingRefHint);
+
+    refHint.teardownEventListeners = () => {
+        // remove event listeners
+        resetHidingRefHint();
+        link.removeEventListener("mouseleave", startHidingRefHint);
+        link.removeEventListener("mouseenter", resetHidingRefHint);
+        link.removeEventListener("blur", startHidingRefHint);
+        link.removeEventListener("focus", resetHidingRefHint);
+        refHint.removeEventListener("mouseleave", startHidingRefHint);
+        refHint.removeEventListener("mouseenter", resetHidingRefHint);
+        refHint.removeEventListener("blur", startHidingRefHint);
+        refHint.removeEventListener("focus", resetHidingRefHint);
+    };
+}
+
+function positionRefHint(refHint) {
+    const link = refHint.forLink;
+    const linkPos = getBounds(link);
+    refHint.style.top = linkPos.bottom + "px";
+    refHint.style.left = linkPos.left + "px";
+
+    const panelPos = refHint.getBoundingClientRect();
+    const panelMargin = 8;
+    const maxRight = document.body.parentNode.clientWidth - panelMargin;
+    if (panelPos.right > maxRight) {
+        const overflowAmount = panelPos.right - maxRight;
+        const newLeft = Math.max(panelMargin, linkPos.left - overflowAmount);
+        refHint.style.left = newLeft + "px";
+    }
+}
+
+// TODO: shared util
+// Returns the root-level absolute position {left and top} of element.
+function getBounds(el, relativeTo=document.body) {
+    const relativeRect = relativeTo.getBoundingClientRect();
+    const elRect = el.getBoundingClientRect();
+    const top = elRect.top - relativeRect.top;
+    const left = elRect.left - relativeRect.left;
+    return {
+        top,
+        left,
+        bottom: top + elRect.height,
+        right: left + elRect.width,
+    }
+}
+
+function showRefHintListener(e) {
+    // If the target isn't in a link (or is a link),
+    // just ignore it.
+    let link = e.target.closest("a");
+    if(!link) return;
+
+    // If the target is in a ref-hint panel
+    // (aka a link in the already-open one),
+    // also just ignore it.
+    if(link.closest(".ref-hint")) return;
+
+    // Otherwise, show the panel for the link.
+    showRefHint(link);
+}
+
+function hideAllHintsListener(e) {
+    // If the click is inside a ref-hint panel, ignore it.
+    if(e.target.closest(".ref-hint")) return;
+    // Otherwise, close all the current panels.
+    hideAllRefHints();
+}
+
+document.addEventListener("DOMContentLoaded", () => {
+    document.body.addEventListener("mousedown", showRefHintListener);
+    document.body.addEventListener("focus", showRefHintListener);
+
+    document.body.addEventListener("click", hideAllHintsListener);
+});
+
+window.addEventListener("resize", () => {
+    // Hide any open ref hint.
+    hideAllRefHints();
+});
+}
+</script>
 <script>/* Boilerplate: script-var-click-highlighting */
+"use strict";
+{
 /*
 Color-choosing design:
 
-Colors are ordered by goodness.
-Each color has a usage count (initially zero).
-Each variable has a last-used color.
-
-* If the var has a last-used color, and that color's usage is 0,
-    return that color.
-* Otherwise, return the lowest-indexed color with the lowest usage.
-    Increment the color's usage and set it as the last-used color
-    for that var.
-* On unclicking, decrement usage of the color.
+* Colors are ordered by goodness.
+* On clicking a var, give it the earliest color
+    with the lowest usage in the algorithm.
+* On re-clicking, re-use the var's most recent color
+    if that's not currently being used elsewhere.
 */
-"use strict";
-{
-    document.addEventListener("click", e=>{
-        if(e.target.nodeName == "VAR") {
-            highlightSameAlgoVars(e.target);
-        }
-    });
-    const indexCounts = new Map();
-    const indexNames = new Map();
-    function highlightSameAlgoVars(v) {
-        // Find the algorithm container.
-        let algoContainer = null;
-        let searchEl = v;
-        while(algoContainer == null && searchEl != document.body) {
-            searchEl = searchEl.parentNode;
-            if(searchEl.hasAttribute("data-algorithm")) {
-                algoContainer = searchEl;
-            }
-        }
 
-        // Not highlighting document-global vars,
-        // too likely to be unrelated.
-        if(algoContainer == null) return;
-
-        const algoName = algoContainer.getAttribute("data-algorithm");
-        const varName = getVarName(v);
-        const addClass = !v.classList.contains("selected");
-        let highlightClass = null;
-        if(addClass) {
-            const index = chooseHighlightIndex(algoName, varName);
-            indexCounts.get(algoName)[index] += 1;
-            indexNames.set(algoName+"///"+varName, index);
-            highlightClass = nameFromIndex(index);
-        } else {
-            const index = previousHighlightIndex(algoName, varName);
-            indexCounts.get(algoName)[index] -= 1;
-            highlightClass = nameFromIndex(index);
-        }
+const COLOR_COUNT = 7;
 
-        // Find all same-name vars, and toggle their class appropriately.
+document.addEventListener("click", e=>{
+    if(e.target.nodeName == "VAR") {
+        highlightSameAlgoVars(e.target);
+    }
+});
+
+function highlightSameAlgoVars(v) {
+    // Find the algorithm container.
+    let algoContainer = findAlgoContainer(v);
+
+    // Not highlighting document-global vars,
+    // too likely to be unrelated.
+    if(algoContainer == null) return;
+
+    const varName = nameFromVar(v);
+    if(!v.hasAttribute("data-var-color")) {
+        const newColor = chooseHighlightColor(algoContainer, v);
         for(const el of algoContainer.querySelectorAll("var")) {
-            if(getVarName(el) == varName) {
-                el.classList.toggle("selected", addClass);
-                el.classList.toggle(highlightClass, addClass);
+            if(nameFromVar(el) == varName) {
+                el.setAttribute("data-var-color", newColor);
+                el.setAttribute("data-var-last-color", newColor);
+            }
+        }
+    } else {
+        for(const el of algoContainer.querySelectorAll("var")) {
+            if(nameFromVar(el) == varName) {
+                el.removeAttribute("data-var-color");
             }
         }
     }
-    function getVarName(el) {
-        return el.textContent.replace(/(\s|\xa0)+/, " ").trim();
+}
+function findAlgoContainer(el) {
+    while(el != document.body) {
+        if(el.hasAttribute("data-algorithm")) return el;
+        el = el.parentNode;
+    }
+    return null;
+}
+function nameFromVar(el) {
+    return el.textContent.replace(/(\s|\xa0)+/g, " ").trim();
+}
+function colorCountsFromContainer(container) {
+    const namesFromColor = Array.from({length:COLOR_COUNT}, x=>new Set());
+    for(let v of container.querySelectorAll("var[data-var-color]")) {
+        let color = +v.getAttribute("data-var-color");
+        namesFromColor[color].add(nameFromVar(v));
     }
-    function chooseHighlightIndex(algoName, varName) {
-        let indexes = null;
-        if(indexCounts.has(algoName)) {
-            indexes = indexCounts.get(algoName);
-        } else {
-            // 7 classes right now
-            indexes = [0,0,0,0,0,0,0];
-            indexCounts.set(algoName, indexes);
-        }
 
-        // If the element was recently unclicked,
-        // *and* that color is still unclaimed,
-        // give it back the same color.
-        const lastIndex = previousHighlightIndex(algoName, varName);
-        if(indexes[lastIndex] === 0) return lastIndex;
-
-        // Find the earliest index with the lowest count.
-        const minCount = Math.min.apply(null, indexes);
-        let index = null;
-        for(var i = 0; i < indexes.length; i++) {
-            if(indexes[i] == minCount) {
-                return i;
-            }
+    return namesFromColor.map(x=>x.size);
+}
+function leastUsedColor(colors) {
+    // Find the earliest color with the lowest count.
+    let minCount = Infinity;
+    let minColor = null;
+    for(var i = 0; i < colors.length; i++) {
+        if(colors[i] < minCount) {
+            minColor = i;
+            minCount = colors[i];
         }
     }
-    function previousHighlightIndex(algoName, varName) {
-        return indexNames.get(algoName+"///"+varName);
-    }
-    function nameFromIndex(index) {
-        return "selected" + index;
+    return minColor;
+}
+function chooseHighlightColor(container, v) {
+    const colorCounts = colorCountsFromContainer(container);
+    if(v.hasAttribute("data-var-last-color")) {
+        let color = +v.getAttribute("data-var-last-color");
+        if(colorCounts[color] == 0) return color;
     }
+    return leastUsedColor(colorCounts);
+}
 }
 </script>
\ No newline at end of file