From 5127d7a85038f820a7bc39afe74180071e240c6e Mon Sep 17 00:00:00 2001
From: Raphael Kubo da Costa <raphael.kubo.da.costa@intel.com>
Date: Thu, 25 Jan 2024 21:36:54 +0000
Subject: [PATCH] Remove the "parse quaternion reading" algorithm (#477)

SHA: 1e4015653fcfac6b0f8e98dfc43a502cab35c3af
Reason: push, by reillyeon

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 index.html | 81 ++++++++++++------------------------------------------
 1 file changed, 17 insertions(+), 64 deletions(-)

diff --git a/index.html b/index.html
index 5412381..bca7849 100644
--- a/index.html
+++ b/index.html
@@ -7,7 +7,7 @@
   <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">
   <link href="https://www.w3.org/TR/generic-sensor/" rel="canonical">
-  <meta content="ca7c319423115d73d72def5ac8c53a7c3e849a8d" name="document-revision">
+  <meta content="1e4015653fcfac6b0f8e98dfc43a502cab35c3af" name="document-revision">
 <style>
     svg g.edge text {
         font-size: 8px;
@@ -911,7 +911,7 @@
   <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">Generic Sensor API</h1>
-   <p id="w3c-state"><a href="https://www.w3.org/standards/types#ED">Editor’s Draft</a>, <time class="dt-updated" datetime="2024-01-05">5 January 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="2024-01-25">25 January 2024</time></p>
    <details open>
     <summary>More details about this document</summary>
     <div data-fill-with="spec-metadata">
@@ -1083,7 +1083,6 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
            <ol class="toc">
             <li><a href="#parse-single-value-number-reading"><span class="secno">9.2.3.1.1</span> <span class="content">Parse single-value number reading</span></a>
             <li><a href="#parse-xyz-reading"><span class="secno">9.2.3.1.2</span> <span class="content">Parse XYZ reading</span></a>
-            <li><a href="#parse-quaternion-reading"><span class="secno">9.2.3.1.3</span> <span class="content">Parse quaternion reading</span></a>
            </ol>
          </ol>
         <li><a href="#delete-virtual-sensor-command"><span class="secno">9.2.4</span> <span class="content">Delete virtual sensor</span></a>
@@ -2789,46 +2788,6 @@ <h6 class="heading settled dfn-paneled" data-dfn-type="dfn" data-export data-lev
       <p>Return <var>reading</var>.</p>
     </ol>
    </div>
-   <h6 class="heading settled dfn-paneled" data-dfn-type="dfn" data-export data-level="9.2.3.1.3" data-lt="Parse quaternion reading" id="parse-quaternion-reading"><span class="secno">9.2.3.1.3. </span><span class="content">Parse quaternion reading</span><a class="self-link" href="#parse-quaternion-reading" id="ref-for-parse-quaternion-reading"></a></h6>
-   <div class="algorithm" data-algorithm="parse quaternion reading">
-    <dl>
-     <dt data-md>input
-     <dd data-md>
-      <p><var>parameters</var>, a JSON <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object-objects" id="ref-for-sec-object-objects⑦">Object</a></code></p>
-     <dt data-md>output
-     <dd data-md>
-      <p>A <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑤⑨">sensor reading</a> or <strong>undefined</strong></p>
-    </dl>
-    <ol>
-     <li data-md>
-      <p>Let <var>quaternionArray</var> be the result of invoking <a data-link-type="dfn" href="https://w3c.github.io/webdriver/#dfn-getting-properties" id="ref-for-dfn-getting-properties⑥">get a property</a> from <var>parameters</var> with
- "<code>quaternion</code>".</p>
-     <li data-md>
-      <p>If <var>quaternionArray</var> is not an <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array-objects" id="ref-for-sec-array-objects">Array</a></code>, or if its "<code>length</code>" property is not 4, return <strong>undefined</strong>.</p>
-     <li data-md>
-      <p>Let <var>x</var> be the result of invoking <a data-link-type="dfn" href="https://w3c.github.io/webdriver/#dfn-getting-properties" id="ref-for-dfn-getting-properties⑦">get a property</a> from <var>quaternionArray</var> with 0.</p>
-     <li data-md>
-      <p>If <var>x</var> is not a <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-objects" id="ref-for-sec-number-objects⑨">Number</a></code>, or its value is <strong>NaN</strong>, +∞, or −∞, return <strong>undefined</strong>.</p>
-     <li data-md>
-      <p>Let <var>y</var> be the result of invoking <a data-link-type="dfn" href="https://w3c.github.io/webdriver/#dfn-getting-properties" id="ref-for-dfn-getting-properties⑧">get a property</a> from <var>quaternionArray</var> with 1.</p>
-     <li data-md>
-      <p>If <var>y</var> is not a <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-objects" id="ref-for-sec-number-objects①⓪">Number</a></code>, or its value is <strong>NaN</strong>, +∞, or −∞, return <strong>undefined</strong>.</p>
-     <li data-md>
-      <p>Let <var>z</var> be the result of invoking <a data-link-type="dfn" href="https://w3c.github.io/webdriver/#dfn-getting-properties" id="ref-for-dfn-getting-properties⑨">get a property</a> from <var>quaternionArray</var> with 2.</p>
-     <li data-md>
-      <p>If <var>z</var> is not a <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-objects" id="ref-for-sec-number-objects①①">Number</a></code>, or its value is <strong>NaN</strong>, +∞, or −∞, return <strong>undefined</strong>.</p>
-     <li data-md>
-      <p>Let <var>w</var> be the result of invoking <a data-link-type="dfn" href="https://w3c.github.io/webdriver/#dfn-getting-properties" id="ref-for-dfn-getting-properties①⓪">get a property</a> from <var>quaternionArray</var> with 3.</p>
-     <li data-md>
-      <p>If <var>w</var> is not a <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/numbers-and-dates.html#sec-number-objects" id="ref-for-sec-number-objects①②">Number</a></code>, or its value is <strong>NaN</strong>, +∞, or −∞, return <strong>undefined</strong>.</p>
-     <li data-md>
-      <p>Let <var>reading</var> be a new <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⓪">sensor reading</a>.</p>
-     <li data-md>
-      <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#map-set" id="ref-for-map-set⑦">Set</a> <var>reading</var>["<code>quaternion</code>"] be the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list">list</a> « <var>x</var>, <var>y</var>, <var>z</var>, <var>w</var> ».</p>
-     <li data-md>
-      <p>Return <var>reading</var>.</p>
-    </ol>
-   </div>
    <h4 class="heading settled" data-level="9.2.4" id="delete-virtual-sensor-command"><span class="secno">9.2.4. </span><span class="content">Delete virtual sensor</span><a class="self-link" href="#delete-virtual-sensor-command"></a></h4>
    <table class="def">
     <tbody>
@@ -2868,7 +2827,7 @@ <h2 class="heading settled" data-level="10" id="extensibility"><span class="secn
    <p>Such <dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="extension specification" data-noexport id="extension-specification">extension specifications</dfn> are encouraged to focus on a
 single <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type④①">sensor type</a>, exposing both <a data-link-type="dfn" href="#high-level" id="ref-for-high-level⑦">high</a> and <a data-link-type="dfn" href="#low-level" id="ref-for-low-level⑦">low</a> level
 as appropriate.</p>
-   <p><a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification①⓪">Extension specifications</a> are encouraged to define whether a <a data-link-type="dfn" href="#calibration" id="ref-for-calibration①">calibration</a> process applies to <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥①">sensor readings</a>.</p>
+   <p><a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification①⓪">Extension specifications</a> are encouraged to define whether a <a data-link-type="dfn" href="#calibration" id="ref-for-calibration①">calibration</a> process applies to <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑤⑨">sensor readings</a>.</p>
    <p><a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification①①">Extension specifications</a> may explicitly define the <a data-link-type="dfn" href="#local-coordinate-system" id="ref-for-local-coordinate-system④">local coordinate system</a> for the associated <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type④②">sensor type</a> or make it configurable per <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor③⑨">Sensor</a></code> object.</p>
    <p>For an up-to-date list of <a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification①②">extension specifications</a>, please refer to <a data-link-type="biblio" href="#biblio-generic-sensor-usecases" title="Sensor Use Cases">[GENERIC-SENSOR-USECASES]</a> and <a data-link-type="biblio" href="#biblio-motion-sensors" title="Motion Sensors Explainer">[MOTION-SENSORS]</a> documents.</p>
    <h3 class="heading settled" data-level="10.1" id="extension-security-and-privacy"><span class="secno">10.1. </span><span class="content">Security and Privacy</span><a class="self-link" href="#extension-security-and-privacy"></a></h3>
@@ -2896,15 +2855,15 @@ <h3 class="heading settled" data-level="10.2" id="naming"><span class="secno">10
 the distance at which an object is from it
 may see its associated interface called <code>ProximitySensor</code>.</p>
    <p>Attributes of the <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④②">Sensor</a></code> subclass that
-hold <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥②">sensor readings</a> values
+hold <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⓪">sensor readings</a> values
 should be named after the full name of these values.
 For example, the <code>Thermometer</code> interface should hold
-the <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥③">sensor reading</a>'s value in
+the <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥①">sensor reading</a>'s value in
 a <code>temperature</code> attribute (and not a <code>value</code> or <code>temp</code> attribute).
 A good starting point for naming are the
 Quantities, Units, Dimensions and Data Types Ontologies <a data-link-type="biblio" href="#biblio-qudt" title="QUDT - Quantities, Units, Dimensions and Data Types Ontologies">[QUDT]</a>.</p>
    <h3 class="heading settled" data-level="10.3" id="unit"><span class="secno">10.3. </span><span class="content">Unit</span><a class="self-link" href="#unit"></a></h3>
-   <p><a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification①④">Extension specifications</a> must specify the unit of <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥④">sensor readings</a>.</p>
+   <p><a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification①④">Extension specifications</a> must specify the unit of <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥②">sensor readings</a>.</p>
    <p>As per the Technical Architecture Group’s (TAG) API Design Principles <a data-link-type="biblio" href="#biblio-api-design-principles" title="Web Platform Design Principles">[API-DESIGN-PRINCIPLES]</a>,
 all time measurement should be in milliseconds.
 All other units should be specified using,
@@ -2945,7 +2904,7 @@ <h3 class="heading settled" data-level="10.4" id="high-vs-low-level"><span class
    <h3 class="heading settled" data-level="10.5" id="multiple-sensors"><span class="secno">10.5. </span><span class="content">When is Enabling Multiple Sensors of the Same Type Not the Right Choice?</span><a class="self-link" href="#multiple-sensors"></a></h3>
    <p>It is not advisable to construct multiple <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④③">Sensor</a></code> instances of the same <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type④③">sensor type</a> with
 equal construction parameters, as it can lead to unnecessary hardware resources consumption.</p>
-   <p>In cases when multiple observers are interested in notifications of a newly available <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑤">sensor reading</a>, an <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-event-listener" id="ref-for-concept-event-listener①">event listener</a> can be added on a single <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④④">Sensor</a></code> instance instead of
+   <p>In cases when multiple observers are interested in notifications of a newly available <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥③">sensor reading</a>, an <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-event-listener" id="ref-for-concept-event-listener①">event listener</a> can be added on a single <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④④">Sensor</a></code> instance instead of
 creating multiple instances of the same <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type④④">sensor type</a> and using simple <code class="idl"><a data-link-type="idl" href="#dom-sensor-onreading" id="ref-for-dom-sensor-onreading①">onreading</a></code> event
 handler.</p>
    <p>Conversely, multiple <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④⑤">Sensors</a></code> of the same <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type④⑤">sensor type</a> can be created when they
@@ -2966,7 +2925,7 @@ <h3 class="heading settled" data-level="10.6" id="definition-reqs"><span class="
   Unless the <a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification①⑨">extension specification</a> defines otherwise, <a data-link-type="dfn" href="#supported-sensor-options" id="ref-for-supported-sensor-options①">supported sensor options</a> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain③">contain</a> a single item which is "frequency".</p>
      <p>The user agent must remove items from <a data-link-type="dfn" href="#supported-sensor-options" id="ref-for-supported-sensor-options②">supported sensor options</a> for a given <a data-link-type="dfn" href="#extension-sensor-interface" id="ref-for-extension-sensor-interface⑥">extension sensor interface</a> if it cannot support the corresponding sensor
   options.</p>
-     <p>The <a data-link-type="dfn" href="#extension-sensor-interface" id="ref-for-extension-sensor-interface⑦">extension sensor interface</a> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-attribute" id="ref-for-dfn-attribute③">attributes</a> which expose <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑥">sensor readings</a> are <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-read-only" id="ref-for-dfn-read-only">read only</a> and their getters must return the result of invoking <a data-link-type="dfn" href="#get-value-from-latest-reading" id="ref-for-get-value-from-latest-reading③">get value from latest reading</a> with <strong>this</strong> and <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-attribute" id="ref-for-dfn-attribute④">attribute</a> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-identifier" id="ref-for-dfn-identifier②">identifier</a> as arguments.</p>
+     <p>The <a data-link-type="dfn" href="#extension-sensor-interface" id="ref-for-extension-sensor-interface⑦">extension sensor interface</a> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-attribute" id="ref-for-dfn-attribute③">attributes</a> which expose <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥④">sensor readings</a> are <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-read-only" id="ref-for-dfn-read-only">read only</a> and their getters must return the result of invoking <a data-link-type="dfn" href="#get-value-from-latest-reading" id="ref-for-get-value-from-latest-reading③">get value from latest reading</a> with <strong>this</strong> and <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-attribute" id="ref-for-dfn-attribute④">attribute</a> <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-identifier" id="ref-for-dfn-identifier②">identifier</a> as arguments.</p>
     <li data-md>
      <p>If the <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type④⑥">sensor type</a> is representing <a data-link-type="dfn" href="#sensor-fusion" id="ref-for-sensor-fusion⑧">sensor fusion</a>, its <a data-link-type="dfn" href="#sensor-permission-names" id="ref-for-sensor-permission-names②">sensor permission names</a> must
   be those associated with the fusion source <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type④⑦">sensor types</a>.</p>
@@ -2998,7 +2957,7 @@ <h3 class="heading settled" data-level="10.7" id="extend-automation"><span class
       The <strong>Proximity Sensor</strong> is a <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type⑤②">sensor type</a> with one associated <a data-link-type="dfn" href="#extension-sensor-interface" id="ref-for-extension-sensor-interface⑧">extension sensor
         interface</a>, <code>ProximitySensor</code>. Its associated <a data-link-type="dfn" href="#virtual-sensor-type" id="ref-for-virtual-sensor-type⑤">virtual sensor type</a> is "<code>proximity</code>". 
      <p><em>[...]</em></p>
-     <p>The <strong>proximity reading parsing algorithm</strong>, given a JSON <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object-objects" id="ref-for-sec-object-objects⑧">Object</a></code> <em>parameters</em>, must
+     <p>The <strong>proximity reading parsing algorithm</strong>, given a JSON <code class="idl"><a data-link-type="idl" href="https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object-objects" id="ref-for-sec-object-objects⑦">Object</a></code> <em>parameters</em>, must
         invoke <a data-link-type="dfn" href="#parse-single-value-number-reading" id="ref-for-parse-single-value-number-reading①">parse single-value number reading</a> with <em>parameters</em> and "<code>distance</code>".</p>
      <p>The <a data-link-type="dfn" href="#per-type-virtual-sensor-metadata" id="ref-for-per-type-virtual-sensor-metadata⑦">per-type virtual sensor metadata</a> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-map" id="ref-for-ordered-map⑨">map</a> must have an entry whose key is "<code>proximity</code>"
         and whose value is a <a data-link-type="dfn" href="#virtual-sensor-metadata" id="ref-for-virtual-sensor-metadata③">virtual sensor metadata</a> whose <a data-link-type="dfn" href="#virtual-sensor-metadata-reading-parsing-algorithm" id="ref-for-virtual-sensor-metadata-reading-parsing-algorithm①">reading
@@ -3006,11 +2965,11 @@ <h3 class="heading settled" data-level="10.7" id="extend-automation"><span class
     </blockquote>
    </div>
    <h3 class="heading settled" data-level="10.8" id="permission-api"><span class="secno">10.8. </span><span class="content">Extending the Permission API</span><a class="self-link" href="#permission-api"></a></h3>
-   <p>An implementation of the <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④⑦">Sensor</a></code> interface for each <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type⑤③">sensor type</a> must protect its <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑦">reading</a> by associated <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-name" id="ref-for-dfn-name③">name</a> or <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor" id="ref-for-dom-permissiondescriptor">PermissionDescriptor</a></code>.
+   <p>An implementation of the <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④⑦">Sensor</a></code> interface for each <a data-link-type="dfn" href="#sensor-type" id="ref-for-sensor-type⑤③">sensor type</a> must protect its <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑤">reading</a> by associated <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-name" id="ref-for-dfn-name③">name</a> or <code class="idl"><a data-link-type="idl" href="https://w3c.github.io/permissions/#dom-permissiondescriptor" id="ref-for-dom-permissiondescriptor">PermissionDescriptor</a></code>.
 A <a data-link-type="dfn" href="#low-level" id="ref-for-low-level①②">low-level</a> <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor④⑧">sensor</a></code> may use its interface name as a <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-name" id="ref-for-dfn-name④">name</a>,
 for instance, "gyroscope" or "accelerometer". <a data-link-type="dfn" href="#sensor-fusion" id="ref-for-sensor-fusion⑨">Fusion sensors</a> must <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-request-permission-to-use" id="ref-for-dfn-request-permission-to-use①">request permission to access</a> each of the sensors that are
 used as a source of fusion.</p>
-   <p>Even though it might be difficult to reconstruct <a data-link-type="dfn" href="#low-level" id="ref-for-low-level①③">low-level</a> <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑧">sensor readings</a> from
+   <p>Even though it might be difficult to reconstruct <a data-link-type="dfn" href="#low-level" id="ref-for-low-level①③">low-level</a> <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑥">sensor readings</a> from
 fused data, some of the original information might be inferred. For example, it is easy to
 deduce user’s orientation in space if absolute or geomagnetic orientation sensors are used,
 therefore, these sensors must <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-request-permission-to-use" id="ref-for-dfn-request-permission-to-use②">request permission to use</a> magnetometer as it provides information about orientation of device in relation to Earth’s
@@ -3030,7 +2989,7 @@ <h3 class="heading settled" data-level="10.9" id="permissions-policy-api"><span
    <p>The <a data-link-type="dfn" href="https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature" id="ref-for-policy-controlled-feature④">features</a>' <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 allowlist</a> is <code>'self'</code>.</p>
    <p class="note" role="note"><span class="marker">Note:</span> The <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-allowlist①">default allowlist</a> of <code>'self'</code> allows <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor⑤⓪">Sensor</a></code> interface
 implementation usage in same-origin nested frames but prevents third-party content
-from <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑨">sensor readings</a> access.</p>
+from <a data-link-type="dfn" href="#sensor-reading" id="ref-for-sensor-reading⑥⑦">sensor readings</a> access.</p>
    <p>The <a data-link-type="dfn" href="#sensor-feature-names" id="ref-for-sensor-feature-names②">sensor feature names</a> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ordered-set" id="ref-for-ordered-set⑨">set</a> must contain <a data-link-type="dfn" href="https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature" id="ref-for-policy-controlled-feature⑤">policy-controlled feature</a> tokens of every associated <a data-link-type="dfn" href="https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature" id="ref-for-policy-controlled-feature⑥">feature</a>.</p>
    <p>A <a data-link-type="dfn" href="#low-level" id="ref-for-low-level①④">low-level</a> <code class="idl"><a data-link-type="idl" href="#sensor" id="ref-for-sensor⑤①">sensor</a></code> may use its interface name as a <a data-link-type="dfn" href="https://w3c.github.io/webappsec-permissions-policy/#policy-controlled-feature" id="ref-for-policy-controlled-feature⑦">policy-controlled feature</a> token,
 for instance, "gyroscope" or "accelerometer". Unless the <a data-link-type="dfn" href="#extension-specification" id="ref-for-extension-specification②④">extension specification</a> defines
@@ -3385,7 +3344,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#dom-sensor-onactivate">onactivate</a><span>, in § 7.1</span>
    <li><a href="#dom-sensor-onerror">onerror</a><span>, in § 7.1</span>
    <li><a href="#dom-sensor-onreading">onreading</a><span>, in § 7.1</span>
-   <li><a href="#parse-quaternion-reading">Parse quaternion reading</a><span>, in § 9.2.3.1.2</span>
    <li><a href="#parse-single-value-number-reading">Parse single-value number reading</a><span>, in § 9.2.3.1</span>
    <li><a href="#parse-xyz-reading">Parse XYZ reading</a><span>, in § 9.2.3.1.1</span>
    <li><a href="#dom-sensor-pendingreadingnotification-slot">[[pendingReadingNotification]]</a><span>, in § 7.1.3</span>
@@ -3444,7 +3402,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
    <li>
     <a data-link-type="biblio">[ECMASCRIPT]</a> defines the following terms:
     <ul>
-     <li><span class="dfn-paneled" id="f426b2a9">Array</span>
      <li><span class="dfn-paneled" id="54ca6d3b">Boolean</span>
      <li><span class="dfn-paneled" id="5f9c7266">Number</span>
      <li><span class="dfn-paneled" id="a6e67972">Object</span>
@@ -3511,7 +3468,6 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="c88f3887">item <small>(for struct)</small></span>
      <li><span class="dfn-paneled" id="d14a6f26">key</span>
      <li><span class="dfn-paneled" id="31db57e6">keys</span>
-     <li><span class="dfn-paneled" id="649608b9">list</span>
      <li><span class="dfn-paneled" id="3fca5a9e">map</span>
      <li><span class="dfn-paneled" id="84b454ff">ordered map</span>
      <li><span class="dfn-paneled" id="692595fe">ordered set</span>
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@@ -4357,7 +4311,7 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
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 window.dfnpanelData['reading-timestamp'] = {"dfnID": "reading-timestamp", "url": "#reading-timestamp", "dfnText": "reading timestamp", "refSections": [{"refs": [{"id": "ref-for-reading-timestamp"}, {"id": "ref-for-reading-timestamp\u2460"}], "title": "4.3.4. Reduce accuracy"}, {"refs": [{"id": "ref-for-reading-timestamp\u2461"}], "title": "6.2. Sensor"}], "external": false};
 window.dfnpanelData['local-coordinate-system'] = {"dfnID": "local-coordinate-system", "url": "#local-coordinate-system", "dfnText": "local coordinate system", "refSections": [{"refs": [{"id": "ref-for-local-coordinate-system"}, {"id": "ref-for-local-coordinate-system\u2460"}], "title": "5.1. Sensors"}, {"refs": [{"id": "ref-for-local-coordinate-system\u2461"}, {"id": "ref-for-local-coordinate-system\u2462"}], "title": "8.13. Get value from latest reading"}, {"refs": [{"id": "ref-for-local-coordinate-system\u2463"}], "title": "10. Extensibility"}], "external": false};
 window.dfnpanelData['spatial-sensor'] = {"dfnID": "spatial-sensor", "url": "#spatial-sensor", "dfnText": "spatial sensor", "refSections": [{"refs": [{"id": "ref-for-spatial-sensor"}], "title": "5.1. Sensors"}], "external": false};
@@ -4427,7 +4381,6 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 window.dfnpanelData['virtual-sensor-mapping'] = {"dfnID": "virtual-sensor-mapping", "url": "#virtual-sensor-mapping", "dfnText": "virtual sensor mapping", "refSections": [{"refs": [{"id": "ref-for-virtual-sensor-mapping"}, {"id": "ref-for-virtual-sensor-mapping\u2460"}], "title": "8.3. Connect to sensor"}, {"refs": [{"id": "ref-for-virtual-sensor-mapping\u2461"}, {"id": "ref-for-virtual-sensor-mapping\u2462"}], "title": "9.1. Virtual Sensors"}, {"refs": [{"id": "ref-for-virtual-sensor-mapping\u2463"}], "title": "9.2.1. Create virtual sensor"}, {"refs": [{"id": "ref-for-virtual-sensor-mapping\u2464"}], "title": "9.2.2. Get virtual sensor information"}, {"refs": [{"id": "ref-for-virtual-sensor-mapping\u2465"}], "title": "9.2.3. Update virtual sensor reading"}, {"refs": [{"id": "ref-for-virtual-sensor-mapping\u2466"}], "title": "9.2.4. Delete virtual sensor"}], "external": false};
 window.dfnpanelData['parse-single-value-number-reading'] = {"dfnID": "parse-single-value-number-reading", "url": "#parse-single-value-number-reading", "dfnText": "9.2.3.1.1. Parse single-value number reading", "refSections": [{"refs": [{"id": "ref-for-parse-single-value-number-reading"}], "title": "9.2.3.1.1. Parse single-value number reading"}, {"refs": [{"id": "ref-for-parse-single-value-number-reading"}], "title": "10.7. Automation"}], "external": false};
 window.dfnpanelData['parse-xyz-reading'] = {"dfnID": "parse-xyz-reading", "url": "#parse-xyz-reading", "dfnText": "9.2.3.1.2. Parse XYZ reading", "refSections": [{"refs": [{"id": "ref-for-parse-xyz-reading"}], "title": "9.2.3.1.2. Parse XYZ reading"}], "external": false};
-window.dfnpanelData['parse-quaternion-reading'] = {"dfnID": "parse-quaternion-reading", "url": "#parse-quaternion-reading", "dfnText": "9.2.3.1.3. Parse quaternion reading", "refSections": [{"refs": [{"id": "ref-for-parse-quaternion-reading"}], "title": "9.2.3.1.3. Parse quaternion reading"}], "external": false};
 window.dfnpanelData['extension-specification'] = {"dfnID": "extension-specification", "url": "#extension-specification", "dfnText": "extension specifications", "refSections": [{"refs": [{"id": "ref-for-extension-specification"}], "title": "4.2.1. Secure Context"}, {"refs": [{"id": "ref-for-extension-specification\u2460"}], "title": "4.3.1. Limit maximum sampling frequency"}, {"refs": [{"id": "ref-for-extension-specification\u2461"}], "title": "5.5. Conditions to expose sensor readings"}, {"refs": [{"id": "ref-for-extension-specification\u2462"}, {"id": "ref-for-extension-specification\u2463"}], "title": "6.1. Sensor Type"}, {"refs": [{"id": "ref-for-extension-specification\u2464"}], "title": "8.13. Get value from latest reading"}, {"refs": [{"id": "ref-for-extension-specification\u2465"}], "title": "9. Automation"}, {"refs": [{"id": "ref-for-extension-specification\u2466"}], "title": "9.1. Virtual Sensors"}, {"refs": [{"id": "ref-for-extension-specification\u2467"}], "title": "9.2.3.1. Algorithms for parsing readings"}, {"refs": [{"id": "ref-for-extension-specification\u2468"}, {"id": "ref-for-extension-specification\u2460\u24ea"}, {"id": "ref-for-extension-specification\u2460\u2460"}, {"id": "ref-for-extension-specification\u2460\u2461"}], "title": "10. Extensibility"}, {"refs": [{"id": "ref-for-extension-specification\u2460\u2462"}], "title": "10.1. Security and Privacy"}, {"refs": [{"id": "ref-for-extension-specification\u2460\u2463"}], "title": "10.3. Unit"}, {"refs": [{"id": "ref-for-extension-specification\u2460\u2464"}], "title": "10.4. Exposing High-Level vs. Low-Level Sensors"}, {"refs": [{"id": "ref-for-extension-specification\u2460\u2465"}], "title": "10.5. When is Enabling Multiple Sensors of the Same Type Not the Right Choice?"}, {"refs": [{"id": "ref-for-extension-specification\u2460\u2466"}, {"id": "ref-for-extension-specification\u2460\u2467"}, {"id": "ref-for-extension-specification\u2460\u2468"}, {"id": "ref-for-extension-specification\u2461\u24ea"}, {"id": "ref-for-extension-specification\u2461\u2460"}], "title": "10.6. Definition Requirements"}, {"refs": [{"id": "ref-for-extension-specification\u2461\u2461"}, {"id": "ref-for-extension-specification\u2461\u2462"}], "title": "10.7. Automation"}, {"refs": [{"id": "ref-for-extension-specification\u2461\u2463"}], "title": "10.9. Extending the Permissions Policy API"}], "external": false};
 window.dfnpanelData['extension-sensor-interface'] = {"dfnID": "extension-sensor-interface", "url": "#extension-sensor-interface", "dfnText": "extension sensor interface", "refSections": [{"refs": [{"id": "ref-for-extension-sensor-interface"}], "title": "6.1. Sensor Type"}, {"refs": [{"id": "ref-for-extension-sensor-interface\u2460"}, {"id": "ref-for-extension-sensor-interface\u2461"}], "title": "6.2. Sensor"}, {"refs": [{"id": "ref-for-extension-sensor-interface\u2462"}], "title": "7.1. The Sensor Interface"}, {"refs": [{"id": "ref-for-extension-sensor-interface\u2463"}, {"id": "ref-for-extension-sensor-interface\u2464"}, {"id": "ref-for-extension-sensor-interface\u2465"}, {"id": "ref-for-extension-sensor-interface\u2466"}], "title": "10.6. Definition Requirements"}, {"refs": [{"id": "ref-for-extension-sensor-interface\u2467"}], "title": "10.7. Automation"}], "external": false};
 window.dfnpanelData['supported-sensor-options'] = {"dfnID": "supported-sensor-options", "url": "#supported-sensor-options", "dfnText": "supported sensor options", "refSections": [{"refs": [{"id": "ref-for-supported-sensor-options"}], "title": "8.1. Initialize a sensor object"}, {"refs": [{"id": "ref-for-supported-sensor-options\u2460"}, {"id": "ref-for-supported-sensor-options\u2461"}], "title": "10.6. Definition Requirements"}], "external": false};