From e7f4af68f4faa6988bb1b78596deb9109f10d28a Mon Sep 17 00:00:00 2001
From: Mike Taylor <miketaylr@chromium.org>
Date: Thu, 30 Mar 2023 13:35:21 +0000
Subject: [PATCH] Add a Sec-CH-UA-Form-Factor hint (#338)

SHA: e24995c1ba5e99737697de559f87d553fdd68846
Reason: push, by miketaylr

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 index.html | 702 +++++++++++++++++++++++++++++------------------------
 1 file changed, 380 insertions(+), 322 deletions(-)

diff --git a/index.html b/index.html
index 75c6e7a..f24cd19 100644
--- a/index.html
+++ b/index.html
@@ -4,9 +4,9 @@
   <title>User-Agent Client Hints</title>
   <meta content="width=device-width, initial-scale=1, shrink-to-fit=no" name="viewport">
   <link href="https://www.w3.org/StyleSheets/TR/2021/cg-draft" rel="stylesheet">
-  <meta content="Bikeshed version 2fb26b4f8, updated Thu Feb 16 11:34:18 2023 -0800" name="generator">
+  <meta content="Bikeshed version d9bd89757, updated Thu Mar 23 10:06:53 2023 -0700" name="generator">
   <link href="https://wicg.github.io/ua-client-hints/" rel="canonical">
-  <meta content="ec059e9718e28c0f04a01dd2190af78456ee2ba9" name="document-revision">
+  <meta content="e24995c1ba5e99737697de559f87d553fdd68846" name="document-revision">
 <style>/* style-autolinks */
 .css.css, .property.property, .descriptor.descriptor {
     color: var(--a-normal-text);
@@ -216,10 +216,10 @@
 .dfn-panel {
     position: absolute;
     z-index: 35;
-    height: auto;
-    width: -webkit-fit-content;
-    width: fit-content;
+    width: 20em;
+    min-width: min-content;
     max-width: 300px;
+    height: auto;
     max-height: 500px;
     overflow: auto;
     padding: 0.5em 0.75em;
@@ -227,6 +227,7 @@
     background: var(--dfnpanel-bg);
     color: var(--dfnpanel-text);
     border: outset 0.2em;
+    white-space: normal; /* in case it's moved into a pre */
 }
 .dfn-panel:not(.on) { display: none; }
 .dfn-panel * { margin: 0; padding: 0; text-indent: 0; }
@@ -597,7 +598,7 @@
   <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">User-Agent Client Hints</h1>
-   <p id="w3c-state"><a href="https://www.w3.org/standards/types#CG-DRAFT">Draft Community Group Report</a>, <time class="dt-updated" datetime="2023-02-17">17 February 2023</time></p>
+   <p id="w3c-state"><a href="https://www.w3.org/standards/types#CG-DRAFT">Draft Community Group Report</a>, <time class="dt-updated" datetime="2023-03-30">30 March 2023</time></p>
    <div data-fill-with="spec-metadata">
     <dl>
      <dt>This version:
@@ -682,13 +683,14 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
       <li><a href="#sec-ch-ua"><span class="secno">3.1</span> <span class="content">The 'Sec-CH-UA' Header Field</span></a>
       <li><a href="#sec-ch-ua-arch"><span class="secno">3.2</span> <span class="content">The 'Sec-CH-UA-Arch' Header Field</span></a>
       <li><a href="#sec-ch-ua-bitness"><span class="secno">3.3</span> <span class="content">The 'Sec-CH-UA-Bitness' Header Field</span></a>
-      <li><a href="#sec-ch-ua-full-version"><span class="secno">3.4</span> <span class="content">The 'Sec-CH-UA-Full-Version' Header Field</span></a>
-      <li><a href="#sec-ch-ua-full-version-list"><span class="secno">3.5</span> <span class="content">The 'Sec-CH-UA-Full-Version-List' Header Field</span></a>
-      <li><a href="#sec-ch-ua-mobile"><span class="secno">3.6</span> <span class="content">The 'Sec-CH-UA-Mobile' Header Field</span></a>
-      <li><a href="#sec-ch-ua-model"><span class="secno">3.7</span> <span class="content">The 'Sec-CH-UA-Model' Header Field</span></a>
-      <li><a href="#sec-ch-ua-platform"><span class="secno">3.8</span> <span class="content">The 'Sec-CH-UA-Platform' Header Field</span></a>
-      <li><a href="#sec-ch-ua-platform-version"><span class="secno">3.9</span> <span class="content">The 'Sec-CH-UA-Platform-Version' Header Field</span></a>
-      <li><a href="#sec-ch-ua-wow64"><span class="secno">3.10</span> <span class="content">The 'Sec-CH-UA-WoW64' Header Field</span></a>
+      <li><a href="#sec-ch-ua-form-factor"><span class="secno">3.4</span> <span class="content">The 'Sec-CH-UA-Form-Factor' Header Field</span></a>
+      <li><a href="#sec-ch-ua-full-version"><span class="secno">3.5</span> <span class="content">The 'Sec-CH-UA-Full-Version' Header Field</span></a>
+      <li><a href="#sec-ch-ua-full-version-list"><span class="secno">3.6</span> <span class="content">The 'Sec-CH-UA-Full-Version-List' Header Field</span></a>
+      <li><a href="#sec-ch-ua-mobile"><span class="secno">3.7</span> <span class="content">The 'Sec-CH-UA-Mobile' Header Field</span></a>
+      <li><a href="#sec-ch-ua-model"><span class="secno">3.8</span> <span class="content">The 'Sec-CH-UA-Model' Header Field</span></a>
+      <li><a href="#sec-ch-ua-platform"><span class="secno">3.9</span> <span class="content">The 'Sec-CH-UA-Platform' Header Field</span></a>
+      <li><a href="#sec-ch-ua-platform-version"><span class="secno">3.10</span> <span class="content">The 'Sec-CH-UA-Platform-Version' Header Field</span></a>
+      <li><a href="#sec-ch-ua-wow64"><span class="secno">3.11</span> <span class="content">The 'Sec-CH-UA-WoW64' Header Field</span></a>
      </ol>
     <li>
      <a href="#interface"><span class="secno">4</span> <span class="content">Interface</span></a>
@@ -726,14 +728,15 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
       <li><a href="#iana-ua"><span class="secno">7.1</span> <span class="content">'Sec-CH-UA' Header Field</span></a>
       <li><a href="#iana-arch"><span class="secno">7.2</span> <span class="content">'Sec-CH-UA-Arch' Header Field</span></a>
       <li><a href="#iana-bitness"><span class="secno">7.3</span> <span class="content">'Sec-CH-UA-Bitness' Header Field</span></a>
-      <li><a href="#iana-full-version"><span class="secno">7.4</span> <span class="content">'Sec-CH-UA-Full-Version' Header Field</span></a>
-      <li><a href="#iana-full-version-list"><span class="secno">7.5</span> <span class="content">'Sec-CH-UA-Full-Version-List' Header Field</span></a>
-      <li><a href="#iana-mobile"><span class="secno">7.6</span> <span class="content">'Sec-CH-UA-Mobile' Header Field</span></a>
-      <li><a href="#iana-model"><span class="secno">7.7</span> <span class="content">'Sec-CH-UA-Model' Header Field</span></a>
-      <li><a href="#iana-platform"><span class="secno">7.8</span> <span class="content">'Sec-CH-UA-Platform' Header Field</span></a>
-      <li><a href="#iana-platform-version"><span class="secno">7.9</span> <span class="content">'Sec-CH-UA-Platform-Version' Header Field</span></a>
-      <li><a href="#iana-wow64"><span class="secno">7.10</span> <span class="content">'Sec-CH-UA-WoW64' Header Field</span></a>
-      <li><a href="#iana-user-agent"><span class="secno">7.11</span> <span class="content">'User-Agent' Header Field</span></a>
+      <li><a href="#iana-form-factor"><span class="secno">7.4</span> <span class="content">'Sec-CH-UA-Form-Factor' Header Field</span></a>
+      <li><a href="#iana-full-version"><span class="secno">7.5</span> <span class="content">'Sec-CH-UA-Full-Version' Header Field</span></a>
+      <li><a href="#iana-full-version-list"><span class="secno">7.6</span> <span class="content">'Sec-CH-UA-Full-Version-List' Header Field</span></a>
+      <li><a href="#iana-mobile"><span class="secno">7.7</span> <span class="content">'Sec-CH-UA-Mobile' Header Field</span></a>
+      <li><a href="#iana-model"><span class="secno">7.8</span> <span class="content">'Sec-CH-UA-Model' Header Field</span></a>
+      <li><a href="#iana-platform"><span class="secno">7.9</span> <span class="content">'Sec-CH-UA-Platform' Header Field</span></a>
+      <li><a href="#iana-platform-version"><span class="secno">7.10</span> <span class="content">'Sec-CH-UA-Platform-Version' Header Field</span></a>
+      <li><a href="#iana-wow64"><span class="secno">7.11</span> <span class="content">'Sec-CH-UA-WoW64' Header Field</span></a>
+      <li><a href="#iana-user-agent"><span class="secno">7.12</span> <span class="content">'User-Agent' Header Field</span></a>
      </ol>
     <li><a href="#ack"><span class="secno">8</span> <span class="content">Acknowledgments</span></a>
     <li>
@@ -1007,31 +1010,35 @@ <h2 class="heading settled" data-level="3" id="http-ua-hints"><span class="secno
      <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-brand">brand</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②">user agent</a>'s commercial name (e.g.,
   "cURL", "Edge", "The World’s Best Web Browser"), which MUST be shorter than 32 <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-alpha" id="ref-for-ascii-alpha">ASCII alpha</a> characters.</p>
     <li data-md>
-     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-significant-version">significant version</dfn> - The marketing version which includes
-  distinguishable web-exposed features (e.g., "72", "3", or "12.1"), corresponding to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③">user agent</a>, or any of the brands in its <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands">brands</a> list (e.g., rendering engine or
-  any other <a data-link-type="dfn" href="#user-agent-equivalence-class" id="ref-for-user-agent-equivalence-class">equivalence classes</a> full version).</p>
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-form-factor">form-factor</dfn> - The form-factor of a device, historically
+  represented as a &lt;<a data-link-type="dfn" href="https://compat.spec.whatwg.org/#devicecompat" id="ref-for-devicecompat">deviceCompat</a>> token in the User-Agent string (e.g., "Tablet", "VR",
+  etc.)</p>
     <li data-md>
      <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-full-version">full version</dfn> - The build version (e.g.,
-  "72.0.3245.12", "3.14159", or "297.70E04154A") that corresponds to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④">user agent</a>, or any
-  of the brands in its <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands①">brands</a> list.</p>
+  "72.0.3245.12", "3.14159", or "297.70E04154A") that corresponds to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③">user agent</a>, or any
+  of the brands in its <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands">brands</a> list.</p>
     <li data-md>
-     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-brand">platform brand</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤">user agent</a>'s operating system’s
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-model">model</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④">user agent</a>'s device model (e.g., "", or
+  "Pixel 2 XL")</p>
+    <li data-md>
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-mobileness">mobileness</dfn> - A boolean indicating if the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤">user agent</a>'s
+  device is a mobile device. (e.g., ?0 or ?1)</p>
+    <li data-md>
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-brand">platform brand</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥">user agent</a>'s operating system’s
   commercial name. (e.g., "Windows", "iOS", or "AmazingOS")</p>
     <li data-md>
-     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-version">platform version</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥">user agent</a>'s operating system’s
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-version">platform version</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑦">user agent</a>'s operating system’s
   version. (e.g., "NT 6.0", "15", or "17G")</p>
     <li data-md>
-     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-architecture">platform architecture</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑦">user agent</a>'s underlying CPU
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-architecture">platform architecture</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑧">user agent</a>'s underlying CPU
   architecture (e.g., "ARM", or "x86")</p>
     <li data-md>
-     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-bitness">platform bitness</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑧">user agent</a>'s underlying CPU
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-platform-bitness">platform bitness</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑨">user agent</a>'s underlying CPU
   architecture bitness (e.g., "32" or "64")</p>
     <li data-md>
-     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-model">model</dfn> - The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑨">user agent</a>'s device model (e.g., "", or
-  "Pixel 2 XL")</p>
-    <li data-md>
-     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-mobileness">mobileness</dfn> - A boolean indicating if the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent①⓪">user agent</a>'s
-  device is a mobile device. (e.g., ?0 or ?1)</p>
+     <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-significant-version">significant version</dfn> - The marketing version which includes
+  distinguishable web-exposed features (e.g., "72", "3", or "12.1"), corresponding to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent①⓪">user agent</a>, or any of the brands in its <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands①">brands</a> list (e.g., rendering engine or
+  any other <a data-link-type="dfn" href="#user-agent-equivalence-class" id="ref-for-user-agent-equivalence-class">equivalence classes</a> full version).</p>
     <li data-md>
      <p><dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-wow64-ness">wow64-ness</dfn> - A boolean indicating if the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent①①">user agent</a>'s binary is running in 32-bit mode on 64-bit Windows. (e.g., ?0 or ?1)</p>
    </ul>
@@ -1092,22 +1099,30 @@ <h3 class="heading settled" data-level="3.2" id="sec-ch-ua-arch"><span class="se
 </pre>
    <h3 class="heading settled" data-level="3.3" id="sec-ch-ua-bitness"><span class="secno">3.3. </span><span class="content">The 'Sec-CH-UA-Bitness' Header Field</span><a class="self-link" href="#sec-ch-ua-bitness"></a></h3>
    <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-bitness"><code>Sec-CH-UA-Bitness</code><a class="self-link" href="#http-headerdef-sec-ch-ua-bitness"></a></dfn> request header field gives a server information about
-the bitness of the architecture of the platform on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②③">user agent</a> is executing. It is
-a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31②">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3②">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
+the <a data-link-type="dfn" href="#user-agent-platform-bitness" id="ref-for-user-agent-platform-bitness②">platform bitness</a> of the architecture of the platform on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②③">user agent</a> is
+executing. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31②">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3②">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
    <p>The header’s ABNF is:</p>
 <pre class="language-abnf highlight"><c- nc>Sec-CH-UA-Bitness</c-> <c- o>=</c-> <c- nc>sf-string</c->
 </pre>
-   <h3 class="heading settled" data-level="3.4" id="sec-ch-ua-full-version"><span class="secno">3.4. </span><span class="content">The 'Sec-CH-UA-Full-Version' Header Field</span><a class="self-link" href="#sec-ch-ua-full-version"></a></h3>
+   <h3 class="heading settled" data-level="3.4" id="sec-ch-ua-form-factor"><span class="secno">3.4. </span><span class="content">The 'Sec-CH-UA-Form-Factor' Header Field</span><a class="self-link" href="#sec-ch-ua-form-factor"></a></h3>
+   <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-form-factor"><code>Sec-CH-UA-Form-Factor</code><a class="self-link" href="#http-headerdef-sec-ch-ua-form-factor"></a></dfn> request header field gives a server information
+about the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②④">user agent</a>'s <a data-link-type="dfn" href="#user-agent-form-factor" id="ref-for-user-agent-form-factor">form-factor</a>. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31③">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3③">string</a>. Its value SHOULD match one of the following common form-factor values:
+"Automobile", "Mobile", "Tablet", "TV", "VR", "XR", "Unknown" or the empty string. <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
+   <p class="note" role="note"><span class="marker">Note:</span> A "desktop" form-factor would be represented by the empty string.</p>
+   <p>The header’s ABNF is:</p>
+<pre class="language-abnf highlight"><c- nc>Sec-CH-UA-Form-Factor</c-> <c- o>=</c-> <c- nc>sf-string</c->
+</pre>
+   <h3 class="heading settled" data-level="3.5" id="sec-ch-ua-full-version"><span class="secno">3.5. </span><span class="content">The 'Sec-CH-UA-Full-Version' Header Field</span><a class="self-link" href="#sec-ch-ua-full-version"></a></h3>
    <p><strong class="advisement"> <code>Sec-CH-UA-Full-Version</code> is deprecated and will be removed in the future. Developers
 should use <a href="#sec-ch-ua-full-version-list"><code>Sec-CH-UA-Full-Version-List</code></a> instead.</strong></p>
    <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-full-version"><code>Sec-CH-UA-Full-Version</code><a class="self-link" href="#http-headerdef-sec-ch-ua-full-version"></a></dfn> request header field gives a server information
-about the user agent’s <a data-link-type="dfn" href="#user-agent-full-version" id="ref-for-user-agent-full-version②">full version</a>. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31③">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3③">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
+about the user agent’s <a data-link-type="dfn" href="#user-agent-full-version" id="ref-for-user-agent-full-version②">full version</a>. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31④">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3④">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
    <p>The header’s ABNF is:</p>
 <pre class="language-abnf highlight"><c- nc>Sec-CH-UA-Full-Version</c-> <c- o>=</c-> <c- nc>sf-string</c->
 </pre>
-   <h3 class="heading settled" data-level="3.5" id="sec-ch-ua-full-version-list"><span class="secno">3.5. </span><span class="content">The 'Sec-CH-UA-Full-Version-List' Header Field</span><a class="self-link" href="#sec-ch-ua-full-version-list"></a></h3>
+   <h3 class="heading settled" data-level="3.6" id="sec-ch-ua-full-version-list"><span class="secno">3.6. </span><span class="content">The 'Sec-CH-UA-Full-Version-List' Header Field</span><a class="self-link" href="#sec-ch-ua-full-version-list"></a></h3>
    <p>The <dfn class="dfn-paneled" data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-full-version-list"><code>Sec-CH-UA-Full-Version-List</code></dfn> request header field gives a server
-information about the <a data-link-type="dfn" href="#user-agent-full-version" id="ref-for-user-agent-full-version③">full version</a> for each brand in its <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands③">brands</a> list. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31④">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.1" id="ref-for-section-3.1①">list</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
+information about the <a data-link-type="dfn" href="#user-agent-full-version" id="ref-for-user-agent-full-version③">full version</a> for each brand in its <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands③">brands</a> list. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑤">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.1" id="ref-for-section-3.1①">list</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
    <p>The header’s ABNF is:</p>
 <pre class="language-abnf highlight"><c- nc>Sec-CH-UA-Full-Version-List</c-> <c- o>=</c-> <c- nc>sf-list</c->
 </pre>
@@ -1121,9 +1136,9 @@ <h3 class="heading settled" data-level="3.5" id="sec-ch-ua-full-version-list"><s
     <li data-md>
      <p>Return the output of running <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-4.1.1" id="ref-for-section-4.1.1①">serializing a list</a> with <var>list</var> as input.</p>
    </ol>
-   <h3 class="heading settled" data-level="3.6" id="sec-ch-ua-mobile"><span class="secno">3.6. </span><span class="content">The 'Sec-CH-UA-Mobile' Header Field</span><a class="self-link" href="#sec-ch-ua-mobile"></a></h3>
+   <h3 class="heading settled" data-level="3.7" id="sec-ch-ua-mobile"><span class="secno">3.7. </span><span class="content">The 'Sec-CH-UA-Mobile' Header Field</span><a class="self-link" href="#sec-ch-ua-mobile"></a></h3>
    <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-mobile"><code>Sec-CH-UA-Mobile</code><a class="self-link" href="#http-headerdef-sec-ch-ua-mobile"></a></dfn> request header field gives a server information about
-whether or not a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②④">user agent</a> prefers a "mobile" user experience. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑤">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.6" id="ref-for-section-3.3.6">boolean</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
+whether or not a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑤">user agent</a> prefers a "mobile" user experience. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑥">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.6" id="ref-for-section-3.3.6">boolean</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
    <p>The header’s ABNF is:</p>
 <pre class="language-abnf highlight"><c- nc>Sec-CH-UA-Mobile</c-> <c- o>=</c-> <c- nc>sf-boolean</c->
 </pre>
@@ -1131,16 +1146,16 @@ <h3 class="heading settled" data-level="3.6" id="sec-ch-ua-mobile"><span class="
 the <code>Sec-CH-UA-Mobile</code> header will be sent by default, whether or not the server opted-into
 receiving the header via an <code>Accept-CH</code> header (although it can still be controlled by its <a data-link-type="dfn" href="https://wicg.github.io/client-hints-infrastructure/#policy-controlled-client-hints-features" id="ref-for-policy-controlled-client-hints-features①">policy-controlled client hints feature</a>). It is considered low entropy because it is a single
 bit of information directly controllable by the user.</p>
-   <h3 class="heading settled" data-level="3.7" id="sec-ch-ua-model"><span class="secno">3.7. </span><span class="content">The 'Sec-CH-UA-Model' Header Field</span><a class="self-link" href="#sec-ch-ua-model"></a></h3>
+   <h3 class="heading settled" data-level="3.8" id="sec-ch-ua-model"><span class="secno">3.8. </span><span class="content">The 'Sec-CH-UA-Model' Header Field</span><a class="self-link" href="#sec-ch-ua-model"></a></h3>
    <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-model"><code>Sec-CH-UA-Model</code><a class="self-link" href="#http-headerdef-sec-ch-ua-model"></a></dfn> request header field gives a server information about
-the device on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑤">user agent</a> is executing. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑥">Structured Header</a> whose value
-MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3④">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
+the device on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑥">user agent</a> is executing. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑦">Structured Header</a> whose value
+MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3⑤">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
    <p>The header’s ABNF is:</p>
 <pre class="language-abnf highlight"><c- nc>Sec-CH-UA-Model</c-> <c- o>=</c-> <c- nc>sf-string</c->
 </pre>
-   <h3 class="heading settled" data-level="3.8" id="sec-ch-ua-platform"><span class="secno">3.8. </span><span class="content">The 'Sec-CH-UA-Platform' Header Field</span><a class="self-link" href="#sec-ch-ua-platform"></a></h3>
+   <h3 class="heading settled" data-level="3.9" id="sec-ch-ua-platform"><span class="secno">3.9. </span><span class="content">The 'Sec-CH-UA-Platform' Header Field</span><a class="self-link" href="#sec-ch-ua-platform"></a></h3>
    <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-platform"><code>Sec-CH-UA-Platform</code><a class="self-link" href="#http-headerdef-sec-ch-ua-platform"></a></dfn> request header field gives a server information
-about the platform on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑥">user agent</a> is executing. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑦">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3⑤">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>. Its value SHOULD match one of the
+about the platform on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑦">user agent</a> is executing. It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑧">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3⑥">string</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>. Its value SHOULD match one of the
 following common platform values: "Android", "Chrome OS", "Fuchsia", "iOS", "Linux", "macOS",
 "Windows", or "Unknown".</p>
    <p>The header’s ABNF is:</p>
@@ -1148,10 +1163,10 @@ <h3 class="heading settled" data-level="3.8" id="sec-ch-ua-platform"><span class
 </pre>
    <p class="note" role="note"><span class="marker">Note:</span> Like <code>Sec-CH-UA</code> above, since it’s included in the <a data-link-type="dfn" href="https://wicg.github.io/client-hints-infrastructure/#low-entropy-hint-table" id="ref-for-low-entropy-hint-table②">low entropy hint table</a>, the <code>Sec-CH-UA-Platform</code> header will be sent by default, whether or not the server opted-into receiving
 the header via an <code>Accept-CH</code> header (although it can still be controlled by its <a data-link-type="dfn" href="https://wicg.github.io/client-hints-infrastructure/#policy-controlled-client-hints-features" id="ref-for-policy-controlled-client-hints-features②">policy-controlled client hints feature</a>).</p>
-   <h3 class="heading settled" data-level="3.9" id="sec-ch-ua-platform-version"><span class="secno">3.9. </span><span class="content">The 'Sec-CH-UA-Platform-Version' Header Field</span><a class="self-link" href="#sec-ch-ua-platform-version"></a></h3>
+   <h3 class="heading settled" data-level="3.10" id="sec-ch-ua-platform-version"><span class="secno">3.10. </span><span class="content">The 'Sec-CH-UA-Platform-Version' Header Field</span><a class="self-link" href="#sec-ch-ua-platform-version"></a></h3>
    <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-platform-version"><code>Sec-CH-UA-Platform-Version</code><a class="self-link" href="#http-headerdef-sec-ch-ua-platform-version"></a></dfn> request header field gives a server
-information about the <a data-link-type="dfn" href="#user-agent-platform-version" id="ref-for-user-agent-platform-version">platform version</a> on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑦">user agent</a> is executing.
-It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑧">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3⑥">string</a><a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>. Its
+information about the <a data-link-type="dfn" href="#user-agent-platform-version" id="ref-for-user-agent-platform-version">platform version</a> on which a given <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑧">user agent</a> is executing.
+It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑨">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3⑦">string</a><a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>. Its
 value is the result of <a data-link-type="dfn" href="#get-the-platform-version" id="ref-for-get-the-platform-version">getting the platform version</a> with <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand">platform brand</a>.</p>
    <p>To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="get-the-platform-version">get the platform version</dfn>, given a string <var>platform</var>, run the following steps:</p>
    <ol>
@@ -1265,14 +1280,14 @@ <h3 class="heading settled" data-level="3.9" id="sec-ch-ua-platform-version"><sp
    <p>The header’s ABNF is:</p>
 <pre class="language-abnf highlight"><c- nc>Sec-CH-UA-Platform-Version</c-> <c- o>=</c-> <c- nc>sf-string</c->
 </pre>
-   <h3 class="heading settled" data-level="3.10" id="sec-ch-ua-wow64"><span class="secno">3.10. </span><span class="content">The 'Sec-CH-UA-WoW64' Header Field</span><a class="self-link" href="#sec-ch-ua-wow64"></a></h3>
+   <h3 class="heading settled" data-level="3.11" id="sec-ch-ua-wow64"><span class="secno">3.11. </span><span class="content">The 'Sec-CH-UA-WoW64' Header Field</span><a class="self-link" href="#sec-ch-ua-wow64"></a></h3>
    <p>The <dfn data-dfn-type="http-header" data-export id="http-headerdef-sec-ch-ua-wow64"><code>Sec-CH-UA-WoW64</code><a class="self-link" href="#http-headerdef-sec-ch-ua-wow64"></a></dfn> request header field gives a server information about
-whether or not a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑧">user agent</a> binary is running in 32-bit mode on 64-bit Windows.
-It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31⑨">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.6" id="ref-for-section-3.3.6①">boolean</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
+whether or not a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑨">user agent</a> binary is running in 32-bit mode on 64-bit Windows.
+It is a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31①⓪">Structured Header</a> whose value MUST be a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.6" id="ref-for-section-3.3.6①">boolean</a> <a data-link-type="biblio" href="#biblio-rfc8941" title="Structured Field Values for HTTP">[RFC8941]</a>.</p>
    <p>The header’s ABNF is:</p>
 <pre class="language-abnf highlight"><c- nc>Sec-CH-UA-WoW64</c-> <c- o>=</c-> <c- nc>sf-boolean</c->
 </pre>
-   <p class="note" role="note"><span class="marker">Note:</span> These client hints can be evoked with the following set of <a data-link-type="dfn" href="https://wicg.github.io/client-hints-infrastructure/#client-hints-token" id="ref-for-client-hints-token">client hints tokens</a>: <code>Sec-CH-UA</code>, <code>Sec-CH-UA-Arch</code>, <code>Sec-CH-UA-Bitness</code>, <code>Sec-CH-UA-Full-Version</code>, <code>Sec-CH-UA-Full-Version-List</code>, <code>Sec-CH-UA-Mobile</code>, <code>Sec-CH-UA-Model</code>, <code>Sec-CH-UA-Platform</code>, <code>Sec-CH-UA-Platform-Version</code>, <code>Sec-CH-UA-WoW64</code></p>
+   <p class="note" role="note"><span class="marker">Note:</span> These client hints can be evoked with the following set of <a data-link-type="dfn" href="https://wicg.github.io/client-hints-infrastructure/#client-hints-token" id="ref-for-client-hints-token">client hints tokens</a>: <code>Sec-CH-UA</code>, <code>Sec-CH-UA-Arch</code>, <code>Sec-CH-UA-Bitness</code>, <code>Sec-CH-UA-Form-Factor</code>, <code>Sec-CH-UA-Full-Version</code>, <code>Sec-CH-UA-Full-Version-List</code>, <code>Sec-CH-UA-Mobile</code>, <code>Sec-CH-UA-Model</code>, <code>Sec-CH-UA-Platform</code>, <code>Sec-CH-UA-Platform-Version</code>, <code>Sec-CH-UA-WoW64</code></p>
    <h2 class="heading settled" data-level="4" id="interface"><span class="secno">4. </span><span class="content">Interface</span><a class="self-link" href="#interface"></a></h2>
 <pre class="idl highlight def"><c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-navigatoruabrandversion"><code><c- g>NavigatorUABrandVersion</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="NavigatorUABrandVersion" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-navigatoruabrandversion-brand"><code><c- g>brand</c-></code></dfn>;
@@ -1280,30 +1295,31 @@ <h2 class="heading settled" data-level="4" id="interface"><span class="secno">4.
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-uadatavalues"><code><c- g>UADataValues</c-></code></dfn> {
-  <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion"><c- n>NavigatorUABrandVersion</c-></a>> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="sequence<NavigatorUABrandVersion> " id="dom-uadatavalues-brands"><code><c- g>brands</c-></code></dfn>;
-  <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> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-uadatavalues-mobile"><code><c- g>mobile</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="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-architecture"><code><c- g>architecture</c-></code></dfn>;
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString③"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-bitness"><code><c- g>bitness</c-></code></dfn>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString④"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-model"><code><c- g>model</c-></code></dfn>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑤"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-platform"><code><c- g>platform</c-></code></dfn>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑥"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-platformversion"><code><c- g>platformVersion</c-></code></dfn>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑦"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-uafullversion"><code><c- g>uaFullVersion</c-></code></dfn>; // deprecated in favor of fullVersionList
-  <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="UADataValues" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-uadatavalues-wow64"><code><c- g>wow64</c-></code></dfn>;
+  <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion"><c- n>NavigatorUABrandVersion</c-></a>> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="sequence<NavigatorUABrandVersion> " id="dom-uadatavalues-brands"><code><c- g>brands</c-></code></dfn>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString④"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-formfactor"><code><c- g>formFactor</c-></code></dfn>;
   <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence①"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion①"><c- n>NavigatorUABrandVersion</c-></a>> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="sequence<NavigatorUABrandVersion> " id="dom-uadatavalues-fullversionlist"><code><c- g>fullVersionList</c-></code></dfn>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑤"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-model"><code><c- g>model</c-></code></dfn>;
+  <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> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-uadatavalues-mobile"><code><c- g>mobile</c-></code></dfn>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑥"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-platform"><code><c- g>platform</c-></code></dfn>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑦"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-platformversion"><code><c- g>platformVersion</c-></code></dfn>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑧"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UADataValues" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-uadatavalues-uafullversion"><code><c- g>uaFullVersion</c-></code></dfn>; // deprecated in favor of fullVersionList
+  <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="UADataValues" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-uadatavalues-wow64"><code><c- g>wow64</c-></code></dfn>;
 };
 
 <c- b>dictionary</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="dictionary" data-export id="dictdef-ualowentropyjson"><code><c- g>UALowEntropyJSON</c-></code></dfn> {
   <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence②"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion②"><c- n>NavigatorUABrandVersion</c-></a>> <dfn class="dfn-paneled idl-code" data-dfn-for="UALowEntropyJSON" data-dfn-type="dict-member" data-export data-type="sequence<NavigatorUABrandVersion> " id="dom-ualowentropyjson-brands"><code><c- g>brands</c-></code></dfn>;
   <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-dfn-for="UALowEntropyJSON" data-dfn-type="dict-member" data-export data-type="boolean " id="dom-ualowentropyjson-mobile"><code><c- g>mobile</c-></code></dfn>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑧"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UALowEntropyJSON" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-ualowentropyjson-platform"><code><c- g>platform</c-></code></dfn>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString⑨"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="UALowEntropyJSON" data-dfn-type="dict-member" data-export data-type="DOMString " id="dom-ualowentropyjson-platform"><code><c- g>platform</c-></code></dfn>;
 };
 
 [<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->,<c- n>Worker</c->)]
 <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="navigatoruadata"><code><c- g>NavigatorUAData</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-frozen-array" id="ref-for-idl-frozen-array"><c- b>FrozenArray</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion③"><c- n>NavigatorUABrandVersion</c-></a>> <dfn class="dfn-paneled idl-code" data-dfn-for="NavigatorUAData" data-dfn-type="attribute" data-export data-readonly data-type="FrozenArray<NavigatorUABrandVersion>" id="dom-navigatoruadata-brands"><code><c- g>brands</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-boolean" id="ref-for-idl-boolean③"><c- b>boolean</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="NavigatorUAData" data-dfn-type="attribute" data-export data-readonly data-type="boolean" id="dom-navigatoruadata-mobile"><code><c- g>mobile</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-DOMString" id="ref-for-idl-DOMString⑨"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="NavigatorUAData" data-dfn-type="attribute" data-export data-readonly data-type="DOMString" id="dom-navigatoruadata-platform"><code><c- g>platform</c-></code></dfn>;
-  <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="#dictdef-uadatavalues" id="ref-for-dictdef-uadatavalues"><c- n>UADataValues</c-></a>> <dfn class="idl-code" data-dfn-for="NavigatorUAData" data-dfn-type="method" data-export data-lt="getHighEntropyValues(hints)" id="dom-navigatoruadata-gethighentropyvalues"><code><c- g>getHighEntropyValues</c-></code><a class="self-link" href="#dom-navigatoruadata-gethighentropyvalues"></a></dfn>(<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence③"><c- b>sequence</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①⓪"><c- b>DOMString</c-></a>> <dfn class="idl-code" data-dfn-for="NavigatorUAData/getHighEntropyValues(hints)" data-dfn-type="argument" data-export id="dom-navigatoruadata-gethighentropyvalues-hints-hints"><code><c- g>hints</c-></code><a class="self-link" href="#dom-navigatoruadata-gethighentropyvalues-hints-hints"></a></dfn>);
+  <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①⓪"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="NavigatorUAData" data-dfn-type="attribute" data-export data-readonly data-type="DOMString" id="dom-navigatoruadata-platform"><code><c- g>platform</c-></code></dfn>;
+  <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="#dictdef-uadatavalues" id="ref-for-dictdef-uadatavalues"><c- n>UADataValues</c-></a>> <dfn class="idl-code" data-dfn-for="NavigatorUAData" data-dfn-type="method" data-export data-lt="getHighEntropyValues(hints)" id="dom-navigatoruadata-gethighentropyvalues"><code><c- g>getHighEntropyValues</c-></code><a class="self-link" href="#dom-navigatoruadata-gethighentropyvalues"></a></dfn>(<a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence" id="ref-for-idl-sequence③"><c- b>sequence</c-></a>&lt;<a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString" id="ref-for-idl-DOMString①①"><c- b>DOMString</c-></a>> <dfn class="idl-code" data-dfn-for="NavigatorUAData/getHighEntropyValues(hints)" data-dfn-type="argument" data-export id="dom-navigatoruadata-gethighentropyvalues-hints-hints"><code><c- g>hints</c-></code><a class="self-link" href="#dom-navigatoruadata-gethighentropyvalues-hints-hints"></a></dfn>);
   <a data-link-type="idl-name" href="#dictdef-ualowentropyjson" id="ref-for-dictdef-ualowentropyjson"><c- n>UALowEntropyJSON</c-></a> <dfn class="idl-code" data-dfn-for="NavigatorUAData" data-dfn-type="method" data-export data-lt="toJSON()" id="dom-navigatoruadata-tojson"><code><c- g>toJSON</c-></code><a class="self-link" href="#dom-navigatoruadata-tojson"></a></dfn>();
 };
 
@@ -1315,12 +1331,12 @@ <h2 class="heading settled" data-level="4" id="interface"><span class="secno">4.
 <a data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/workers.html#workernavigator" id="ref-for-workernavigator"><c- n>WorkerNavigator</c-></a> <c- b>includes</c-> <a data-link-type="idl-name" href="#navigatorua" id="ref-for-navigatorua①"><c- n>NavigatorUA</c-></a>;
 
 </pre>
-   <p class="note" role="note"><span class="marker">Note:</span> The high-entropy portions of the user agent information are retrieved through a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①">Promise</a></code>, in order to give <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent②⑨">user agents</a> the opportunity to gate their exposure behind potentially time-consuming checks (e.g. by asking the user for their permission).</p>
+   <p class="note" role="note"><span class="marker">Note:</span> The high-entropy portions of the user agent information are retrieved through a <code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#idl-promise" id="ref-for-idl-promise①">Promise</a></code>, in order to give <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⓪">user agents</a> the opportunity to gate their exposure behind potentially time-consuming checks (e.g. by asking the user for their permission).</p>
    <h3 class="heading settled" data-level="4.1" id="processing"><span class="secno">4.1. </span><span class="content">Processing model</span><a class="self-link" href="#processing"></a></h3>
    <h4 class="heading settled" data-level="4.1.1" id="monkeypatch-html-windoworworkerglobalscope"><span class="secno">4.1.1. </span><span class="content"><code>WindowOrWorkerGlobalScope</code></span><a class="self-link" href="#monkeypatch-html-windoworworkerglobalscope"></a></h4>
-   <p>Each <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⓪">user agent</a> has an associated <dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-noexport id="user-agent-brands">brands</dfn>, which is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list③">list</a> created by running <a data-link-type="dfn" href="#create-brands" id="ref-for-create-brands②">create brands</a> with <a data-link-type="dfn" href="#user-agent-significant-version" id="ref-for-user-agent-significant-version①">significant version</a>.</p>
+   <p>Each <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③①">user agent</a> has an associated <dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-noexport id="user-agent-brands">brands</dfn>, which is a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list" id="ref-for-list③">list</a> created by running <a data-link-type="dfn" href="#create-brands" id="ref-for-create-brands②">create brands</a> with <a data-link-type="dfn" href="#user-agent-significant-version" id="ref-for-user-agent-significant-version①">significant version</a>.</p>
    <p>Every <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope" id="ref-for-windoworworkerglobalscope">WindowOrWorkerGlobalScope</a></code> object has an associated <dfn class="dfn-paneled" data-dfn-for="WindowOrWorkerGlobalScope" data-dfn-type="dfn" data-noexport id="windoworworkerglobalscope-brands-frozen-array">brands frozen array</dfn>, which is a <code><a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-frozen-array" id="ref-for-idl-frozen-array①">FrozenArray</a>&lt;<a class="idl-code" data-link-type="dictionary" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion④">NavigatorUABrandVersion</a>></code>. It is
-initially the result of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-create-frozen-array" id="ref-for-dfn-create-frozen-array">creating a frozen array</a> from the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③①">user agent</a>'s <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands④">brands</a>.</p>
+initially the result of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-create-frozen-array" id="ref-for-dfn-create-frozen-array">creating a frozen array</a> from the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③②">user agent</a>'s <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands④">brands</a>.</p>
    <p>Additionally, every <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope" id="ref-for-windoworworkerglobalscope①">WindowOrWorkerGlobalScope</a></code> object has an associated <dfn class="dfn-paneled" data-dfn-for="WindowOrWorkerGlobalScope" data-dfn-type="dfn" data-noexport id="windoworworkerglobalscope-full-version-list-frozen-array">full version list frozen array</dfn>, which is a <code><a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-frozen-array" id="ref-for-idl-frozen-array②">FrozenArray</a>&lt;<a class="idl-code" data-link-type="dictionary" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion⑤">NavigatorUABrandVersion</a>></code>. It is
 the result of <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#dfn-create-frozen-array" id="ref-for-dfn-create-frozen-array①">creating a frozen array</a> from running <a data-link-type="dfn" href="#create-brands" id="ref-for-create-brands③">create brands</a> with <a data-link-type="dfn" href="#user-agent-full-version" id="ref-for-user-agent-full-version④">full version</a>.</p>
    <h4 class="heading settled algorithm" data-algorithm="to create brands" data-level="4.1.2" id="create-ua-list-section"><span class="secno">4.1.2. </span><span class="content">Create brands</span><a class="self-link" href="#create-ua-list-section"></a></h4>
@@ -1331,7 +1347,7 @@ <h4 class="heading settled algorithm" data-algorithm="to create brands" data-lev
     <li data-md>
      <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#assert" id="ref-for-assert">Assert</a> <var>version type</var> is either "full version" or "significant version".</p>
     <li data-md>
-     <p>For each <a data-link-type="dfn" href="#user-agent-brand" id="ref-for-user-agent-brand①">brand</a> that represents the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③②">user agent</a>—or an <a data-link-type="dfn" href="#user-agent-equivalence-class" id="ref-for-user-agent-equivalence-class①">equivalence class</a>—as <var>brand</var>:</p>
+     <p>For each <a data-link-type="dfn" href="#user-agent-brand" id="ref-for-user-agent-brand①">brand</a> that represents the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③③">user agent</a>—or an <a data-link-type="dfn" href="#user-agent-equivalence-class" id="ref-for-user-agent-equivalence-class①">equivalence class</a>—as <var>brand</var>:</p>
      <ol>
       <li data-md>
        <p>Let <var>version</var> be a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string">string</a>, initialized accordingly:</p>
@@ -1348,7 +1364,7 @@ <h4 class="heading settled algorithm" data-algorithm="to create brands" data-lev
        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-append" id="ref-for-list-append⑥">Append</a> <var>dict</var> to <var>list</var>.</p>
      </ol>
     <li data-md>
-     <p>The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③③">user agent</a> SHOULD execute the following steps:</p>
+     <p>The <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③④">user agent</a> SHOULD execute the following steps:</p>
      <ol>
       <li data-md>
        <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-append" id="ref-for-list-append⑦">Append</a> one additional <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-item" id="ref-for-list-item">item</a> to <var>list</var> containing a <code class="idl"><a data-link-type="idl" href="#dictdef-navigatoruabrandversion" id="ref-for-dictdef-navigatoruabrandversion⑦">NavigatorUABrandVersion</a></code> dictionary, initialized with <code class="idl"><a data-link-type="idl" href="#dom-navigatoruabrandversion-brand" id="ref-for-dom-navigatoruabrandversion-brand①">brand</a></code> set to <a data-link-type="dfn" href="#create-an-arbitrary-brand" id="ref-for-create-an-arbitrary-brand">arbitrary brand</a> and set <code class="idl"><a data-link-type="idl" href="#dom-navigatoruabrandversion-version" id="ref-for-dom-navigatoruabrandversion-version①">version</a></code> to the result of <a data-link-type="dfn" href="#create-an-arbitrary-version" id="ref-for-create-an-arbitrary-version">create an arbitrary version</a> with <var>version type</var>.</p>
@@ -1356,7 +1372,7 @@ <h4 class="heading settled algorithm" data-algorithm="to create brands" data-lev
        <p>Randomize the order of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-item" id="ref-for-list-item①">items</a> in <var>list</var>.</p>
      </ol>
      <p class="note" role="note"><span class="marker">Note:</span> One approach to minimize caching variance when generating these random components could be to
-determine them at build time, and keep them identical throughout the lifetime of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③④">user agent</a>'s significant
+determine them at build time, and keep them identical throughout the lifetime of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑤">user agent</a>'s significant
 version.</p>
      <p class="note" role="note"><span class="marker">Note:</span> See <a href="#grease">§ 6.2 GREASE-like UA Brand Lists</a> for more details on when and why these randomization steps might be appropriate.</p>
     <li data-md>
@@ -1365,7 +1381,7 @@ <h4 class="heading settled algorithm" data-algorithm="to create brands" data-lev
    <p>An <dfn class="dfn-paneled" data-dfn-for="user agent" data-dfn-type="dfn" data-export id="user-agent-equivalence-class">equivalence class</dfn> represents a group of browsers believed to be compatible with
 each other. A shared rendering engine may form an <a data-link-type="dfn" href="#user-agent-equivalence-class" id="ref-for-user-agent-equivalence-class②">equivalence class</a>, for example.</p>
    <h4 class="heading settled algorithm" data-algorithm="to create arbitrary brand and version values" data-level="4.1.3" id="create-arbitrary-brands-section"><span class="secno">4.1.3. </span><span class="content">Create arbitrary brand and version values</span><a class="self-link" href="#create-arbitrary-brands-section"></a></h4>
-   <p>To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="create-an-arbitrary-brand">create an arbitrary brand</dfn>, the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑤">user agent</a> MUST run these steps:</p>
+   <p>To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="create-an-arbitrary-brand">create an arbitrary brand</dfn>, the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑥">user agent</a> MUST run these steps:</p>
    <ol>
     <li data-md>
      <p>Let <var>arbitraryBrand</var> be a <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string" id="ref-for-string①">string</a> composed of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-alpha" id="ref-for-ascii-alpha①">ASCII alpha</a> and 0x20 (SP). <var>arbitraryBrand</var> MUST contain one or more 0x20 (SP) bytes and be no longer than twenty <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#ascii-byte" id="ref-for-ascii-byte">ASCII bytes</a>, and MUST not start or end with 0x20 (SP).</p>
@@ -1411,7 +1427,7 @@ <h4 class="heading settled algorithm" data-algorithm="to create arbitrary brand
    <div class="note" role="note">
      This algorithm should result in an arbitrary brand without leading or trailing <var>greaseyChars</var>, as
 implementation experience has shown these are not web-compatible. 
-    <p>In addition, despite <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31①⓪">Structured Headers</a> allowing for escaped 0x22 (\") and 0x5C (\\) inside a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3⑦">string</a>, these characters have also created compatibility issues with
+    <p>In addition, despite <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#" id="ref-for-edc3e3324b8239e1191d55af2617bd31①①">Structured Headers</a> allowing for escaped 0x22 (\") and 0x5C (\\) inside a <a data-link-type="dfn" href="https://tools.ietf.org/html/rfc8941#section-3.3.3" id="ref-for-section-3.3.3⑧">string</a>, these characters have also created compatibility issues with
 firewalls.</p>
    </div>
    <p>To <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="create-an-arbitrary-version">create an arbitrary version</dfn> given <var>version type</var>, run the following steps:</p>
@@ -1470,15 +1486,15 @@ <h4 class="heading settled algorithm" data-algorithm="to create a brand-version
    </ol>
    <h4 class="heading settled" data-level="4.1.5" id="getters"><span class="secno">4.1.5. </span><span class="content">Getters</span><a class="self-link" href="#getters"></a></h4>
    <p>On getting, the <code class="idl"><a data-link-type="idl" href="#dom-navigatoruadata-brands" id="ref-for-dom-navigatoruadata-brands">brands</a></code> attribute MUST return <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>'s <a data-link-type="dfn" href="#windoworworkerglobalscope-brands-frozen-array" id="ref-for-windoworworkerglobalscope-brands-frozen-array">brands frozen array</a>.</p>
-   <p>On getting, the <code class="idl"><a data-link-type="idl" href="#dom-navigatoruadata-mobile" id="ref-for-dom-navigatoruadata-mobile">mobile</a></code> attribute must return the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑥">user agent</a>'s <a data-link-type="dfn" href="#user-agent-mobileness" id="ref-for-user-agent-mobileness②">mobileness</a>.</p>
-   <p>On getting, the <code class="idl"><a data-link-type="idl" href="#dom-navigatoruadata-platform" id="ref-for-dom-navigatoruadata-platform">platform</a></code> attribute must return the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑦">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand①">platform brand</a>.</p>
+   <p>On getting, the <code class="idl"><a data-link-type="idl" href="#dom-navigatoruadata-mobile" id="ref-for-dom-navigatoruadata-mobile">mobile</a></code> attribute must return the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑦">user agent</a>'s <a data-link-type="dfn" href="#user-agent-mobileness" id="ref-for-user-agent-mobileness②">mobileness</a>.</p>
+   <p>On getting, the <code class="idl"><a data-link-type="idl" href="#dom-navigatoruadata-platform" id="ref-for-dom-navigatoruadata-platform">platform</a></code> attribute must return the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑧">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand①">platform brand</a>.</p>
    <h4 class="heading settled" data-level="4.1.6" id="getHighEntropyValues"><span class="secno">4.1.6. </span><span class="content"><code>getHighEntropyValues</code> method</span><a class="self-link" href="#getHighEntropyValues"></a></h4>
    <p>The <dfn class="idl-code" data-dfn-for="NavigatorUA" data-dfn-type="method" data-export id="dom-navigatorua-gethighentropyvalues"><code>getHighEntropyValues(<var>hints</var>)</code><a class="self-link" href="#dom-navigatorua-gethighentropyvalues"></a></dfn> method MUST run these steps:</p>
    <ol>
     <li data-md>
      <p>Let <var>p</var> be a <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#a-new-promise" id="ref-for-a-new-promise">a new promise</a> created in the <a data-link-type="dfn" href="https://tc39.es/ecma262/#current-realm" id="ref-for-current-realm">current realm</a>.</p>
     <li data-md>
-     <p>If the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑧">user agent</a> decides one or more values in <var>hints</var> should not be returned, then <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject">reject</a> and return <var>p</var> with a "<code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror">NotAllowedError</a></code>".</p>
+     <p>If the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑨">user agent</a> decides one or more values in <var>hints</var> should not be returned, then <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#reject" id="ref-for-reject">reject</a> and return <var>p</var> with a "<code class="idl"><a data-link-type="idl" href="https://webidl.spec.whatwg.org/#notallowederror" id="ref-for-notallowederror">NotAllowedError</a></code>".</p>
    </ol>
    <p class="issue" id="issue-22962aa8"><a class="self-link" href="#issue-22962aa8"></a> We can improve upon when and why a UA decides to refuse a hint once <a href="https://github.com/WICG/ua-client-hints/issues/151">Issue #151</a> is resolved.</p>
    <ol start="3">
@@ -1490,27 +1506,30 @@ <h4 class="heading settled" data-level="4.1.6" id="getHighEntropyValues"><span c
       <li data-md>
        <p>set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-brands" id="ref-for-dom-uadatavalues-brands">brands</a></code>"] to <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-global" id="ref-for-concept-relevant-global①">relevant global object</a>'s <a data-link-type="dfn" href="#windoworworkerglobalscope-brands-frozen-array" id="ref-for-windoworworkerglobalscope-brands-frozen-array①">brands frozen array</a>.</p>
       <li data-md>
-       <p>set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-mobile" id="ref-for-dom-uadatavalues-mobile">mobile</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent③⑨">user agent</a>'s <a data-link-type="dfn" href="#user-agent-mobileness" id="ref-for-user-agent-mobileness③">mobileness</a>.</p>
+       <p>set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-mobile" id="ref-for-dom-uadatavalues-mobile">mobile</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⓪">user agent</a>'s <a data-link-type="dfn" href="#user-agent-mobileness" id="ref-for-user-agent-mobileness③">mobileness</a>.</p>
       <li data-md>
-       <p>set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-platform" id="ref-for-dom-uadatavalues-platform">platform</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⓪">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand②">platform brand</a>.</p>
+       <p>set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-platform" id="ref-for-dom-uadatavalues-platform">platform</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④①">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand②">platform brand</a>.</p>
       <li data-md>
        <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain">contains</a> "architecture", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-architecture" id="ref-for-dom-uadatavalues-architecture">architecture</a></code>"] to
-the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④①">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-architecture" id="ref-for-user-agent-platform-architecture③">platform architecture</a>.</p>
+the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④②">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-architecture" id="ref-for-user-agent-platform-architecture③">platform architecture</a>.</p>
       <li data-md>
        <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain①">contains</a> "bitness", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-bitness" id="ref-for-dom-uadatavalues-bitness">bitness</a></code>"] to
-the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④②">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-bitness" id="ref-for-user-agent-platform-bitness②">platform bitness</a>.</p>
+the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④③">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-bitness" id="ref-for-user-agent-platform-bitness③">platform bitness</a>.</p>
+      <li data-md>
+       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain②">contains</a> "formFactor", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-formfactor" id="ref-for-dom-uadatavalues-formfactor">formFactor</a></code>"] to
+the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④④">user agent</a>'s <a data-link-type="dfn" href="#user-agent-form-factor" id="ref-for-user-agent-form-factor①">form-factor</a>.</p>
       <li data-md>
-       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain②">contains</a> "fullVersionList", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-fullversionlist" id="ref-for-dom-uadatavalues-fullversionlist">fullVersionList</a></code>"]
+       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain③">contains</a> "fullVersionList", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-fullversionlist" id="ref-for-dom-uadatavalues-fullversionlist">fullVersionList</a></code>"]
 to <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="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global②">relevant global object</a>'s <a data-link-type="dfn" href="#windoworworkerglobalscope-full-version-list-frozen-array" id="ref-for-windoworworkerglobalscope-full-version-list-frozen-array">full version list frozen array</a>.</p>
       <li data-md>
-       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain③">contains</a> "model", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-model" id="ref-for-dom-uadatavalues-model">model</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④③">user agent</a>'s <a data-link-type="dfn" href="#user-agent-model" id="ref-for-user-agent-model③">model</a>.</p>
+       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain④">contains</a> "model", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-model" id="ref-for-dom-uadatavalues-model">model</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑤">user agent</a>'s <a data-link-type="dfn" href="#user-agent-model" id="ref-for-user-agent-model③">model</a>.</p>
       <li data-md>
-       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain④">contains</a> "platformVersion", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-platformversion" id="ref-for-dom-uadatavalues-platformversion">platformVersion</a></code>"]
+       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain⑤">contains</a> "platformVersion", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-platformversion" id="ref-for-dom-uadatavalues-platformversion">platformVersion</a></code>"]
 to the result of <a data-link-type="dfn" href="#get-the-platform-version" id="ref-for-get-the-platform-version①">getting the platform version</a> with <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand③">platform brand</a>.</p>
       <li data-md>
-       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain⑤">contains</a> "uaFullVersion", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-uafullversion" id="ref-for-dom-uadatavalues-uafullversion">uaFullVersion</a></code>"]</p>
+       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain⑥">contains</a> "uaFullVersion", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-uafullversion" id="ref-for-dom-uadatavalues-uafullversion">uaFullVersion</a></code>"]</p>
       <li data-md>
-       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain⑥">contains</a> "wow64", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-wow64" id="ref-for-dom-uadatavalues-wow64">wow64</a></code>"]
+       <p>If <var>hints</var> <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#list-contain" id="ref-for-list-contain⑦">contains</a> "wow64", set <var>uaData</var>["<code class="idl"><a data-link-type="idl" href="#dom-uadatavalues-wow64" id="ref-for-dom-uadatavalues-wow64">wow64</a></code>"]
 to the user agent’s <a data-link-type="dfn" href="#user-agent-wow64-ness" id="ref-for-user-agent-wow64-ness①">wow64-ness</a>.</p>
       <li data-md>
        <p><a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-task" id="ref-for-queue-a-task">Queue a task</a> on the <a data-link-type="dfn" href="https://w3c.github.io/permissions/#dfn-permissions-task-source" id="ref-for-dfn-permissions-task-source">permission task source</a> to <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#resolve" id="ref-for-resolve">resolve</a> <var>p</var> with <var>uaData</var>.</p>
@@ -1526,61 +1545,61 @@ <h4 class="heading settled" data-level="4.1.7" id="toJSON"><span class="secno">4
     <li data-md>
      <p>set <var>uaLowEntropyData</var>["<code class="idl"><a data-link-type="idl" href="#dom-ualowentropyjson-brands" id="ref-for-dom-ualowentropyjson-brands">brands</a></code>"] to <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="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global③">relevant global object</a>'s <a data-link-type="dfn" href="#windoworworkerglobalscope-brands-frozen-array" id="ref-for-windoworworkerglobalscope-brands-frozen-array②">brands frozen array</a>.</p>
     <li data-md>
-     <p>set <var>uaLowEntropyData</var>["<code class="idl"><a data-link-type="idl" href="#dom-ualowentropyjson-mobile" id="ref-for-dom-ualowentropyjson-mobile">mobile</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④④">user agent</a>'s <a data-link-type="dfn" href="#user-agent-mobileness" id="ref-for-user-agent-mobileness④">mobileness</a>.</p>
+     <p>set <var>uaLowEntropyData</var>["<code class="idl"><a data-link-type="idl" href="#dom-ualowentropyjson-mobile" id="ref-for-dom-ualowentropyjson-mobile">mobile</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑥">user agent</a>'s <a data-link-type="dfn" href="#user-agent-mobileness" id="ref-for-user-agent-mobileness④">mobileness</a>.</p>
     <li data-md>
-     <p>set <var>uaLowEntropyData</var>["<code class="idl"><a data-link-type="idl" href="#dom-ualowentropyjson-platform" id="ref-for-dom-ualowentropyjson-platform">platform</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑤">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand④">platform brand</a>.</p>
+     <p>set <var>uaLowEntropyData</var>["<code class="idl"><a data-link-type="idl" href="#dom-ualowentropyjson-platform" id="ref-for-dom-ualowentropyjson-platform">platform</a></code>"] to the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑦">user agent</a>'s <a data-link-type="dfn" href="#user-agent-platform-brand" id="ref-for-user-agent-platform-brand④">platform brand</a>.</p>
     <li data-md>
      <p>Return <var>uaLowEntropyData</var></p>
    </ol>
    <h2 class="heading settled" data-level="5" id="security-privacy"><span class="secno">5. </span><span class="content">Security and Privacy Considerations</span><a class="self-link" href="#security-privacy"></a></h2>
    <h3 class="heading settled" data-level="5.1" id="secure-transport"><span class="secno">5.1. </span><span class="content">Secure Transport</span><a class="self-link" href="#secure-transport"></a></h3>
    <p>Client Hints will not be delivered to non-secure endpoints (see the secure transport requirements in
-Section 2.2.1 of <a data-link-type="biblio" href="#biblio-rfc8942" title="HTTP Client Hints">[RFC8942]</a>). This means that <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑥">user agent</a> information will not
+Section 2.2.1 of <a data-link-type="biblio" href="#biblio-rfc8942" title="HTTP Client Hints">[RFC8942]</a>). This means that <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑧">user agent</a> information will not
 be leaked over plaintext channels, reducing the opportunity for network attackers to build a profile
 of a given agent’s behavior over time.</p>
    <h3 class="heading settled" data-level="5.2" id="delegation"><span class="secno">5.2. </span><span class="content">Delegation</span><a class="self-link" href="#delegation"></a></h3>
    <p>Client Hints will be delegated from top-level pages via Permissions Policy
-(<a data-link-type="biblio" href="#biblio-permissions-policy-1" title="Permissions Policy">[permissions-policy-1]</a>). This reduces the likelihood that <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑦">user agent</a> information will be
+(<a data-link-type="biblio" href="#biblio-permissions-policy-1" title="Permissions Policy">[permissions-policy-1]</a>). This reduces the likelihood that <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑨">user agent</a> information will be
 delivered along with subresource requests, which reduces the potential for <a data-link-type="dfn" href="https://w3c.github.io/fingerprinting-guidance/#dfn-passive-fingerprinting" id="ref-for-dfn-passive-fingerprinting②">passive fingerprinting</a>.</p>
    <p>That delegation is defined as part of <a data-link-type="abstract-op" href="https://wicg.github.io/client-hints-infrastructure/#abstract-opdef-append-client-hints-to-request" id="ref-for-abstract-opdef-append-client-hints-to-request">append client hints to request</a>.</p>
    <h3 class="heading settled" data-level="5.3" id="fingerprinting"><span class="secno">5.3. </span><span class="content">Fingerprinting</span><a class="self-link" href="#fingerprinting"></a></h3>
    <p>The <em>primary goal</em> of User Agent Client Hints is to reduce the amount of default entropy exposed to
 the web at large through the User-Agent header field, which may be used for <a data-link-type="dfn" href="https://w3c.github.io/fingerprinting-guidance/#dfn-passive-fingerprinting" id="ref-for-dfn-passive-fingerprinting③">passive fingerprinting</a> purposes.</p>
-   <p>A <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑧">user agent</a> is able to decide which hints it provides, with the expectation that no more
-information is provided than would be included in an unredacted User-Agent header field. A <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent④⑨">user agent</a> can provide an empty string for any value that it does not wish to provide, or refuse
+   <p>A <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⓪">user agent</a> is able to decide which hints it provides, with the expectation that no more
+information is provided than would be included in an unredacted User-Agent header field. A <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤①">user agent</a> can provide an empty string for any value that it does not wish to provide, or refuse
 to return a hint entirely.</p>
-   <p>However, it will still be possible for some, or all, hints to be requested and used for <a data-link-type="dfn" href="https://w3c.github.io/fingerprinting-guidance/#dfn-active-fingerprinting" id="ref-for-dfn-active-fingerprinting">active fingerprinting</a> purposes by first or delegated third parties. As noted in <a href="#access">§ 5.4 Access Restrictions</a>, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⓪">user agents</a> should consider policies to restrict or reduce access to parties that are known to <a data-link-type="dfn" href="https://w3c.github.io/fingerprinting-guidance/#dfn-active-fingerprinting" id="ref-for-dfn-active-fingerprinting①">actively fingerprint</a> their users.</p>
-   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤①">User agents</a> should take care to not introduce fingerprinting vectors through GREASE-like brand
+   <p>However, it will still be possible for some, or all, hints to be requested and used for <a data-link-type="dfn" href="https://w3c.github.io/fingerprinting-guidance/#dfn-active-fingerprinting" id="ref-for-dfn-active-fingerprinting">active fingerprinting</a> purposes by first or delegated third parties. As noted in <a href="#access">§ 5.4 Access Restrictions</a>, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤②">user agents</a> should consider policies to restrict or reduce access to parties that are known to <a data-link-type="dfn" href="https://w3c.github.io/fingerprinting-guidance/#dfn-active-fingerprinting" id="ref-for-dfn-active-fingerprinting①">actively fingerprint</a> their users.</p>
+   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤③">User agents</a> should take care to not introduce fingerprinting vectors through GREASE-like brand
 lists that might be unique for an individual or a very small group of users. Rather, a strategy
 should be employed where the arbitrary brand is shared across many users (e.g., stable across
 major versions for all users).</p>
    <h3 class="heading settled" data-level="5.4" id="access"><span class="secno">5.4. </span><span class="content">Access Restrictions</span><a class="self-link" href="#access"></a></h3>
    <p>The information in the Client Hints defined above reveals quite a bit of information about the user
-agent and the device upon which it runs. <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤②">User agents</a> ought to exercise judgement before
+agent and the device upon which it runs. <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤④">User agents</a> ought to exercise judgement before
 granting access to this information, and MAY impose restrictions above and beyond the secure
-transport and delegation requirements noted above. For instance, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤③">user agents</a> could choose to reveal <a data-link-type="dfn" href="#user-agent-platform-architecture" id="ref-for-user-agent-platform-architecture④">platform architecture</a> or <a data-link-type="dfn" href="#user-agent-platform-bitness" id="ref-for-user-agent-platform-bitness③">platform bitness</a> only on requests it intends
+transport and delegation requirements noted above. For instance, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑤">user agents</a> could choose to reveal <a data-link-type="dfn" href="#user-agent-platform-architecture" id="ref-for-user-agent-platform-architecture④">platform architecture</a> or <a data-link-type="dfn" href="#user-agent-platform-bitness" id="ref-for-user-agent-platform-bitness④">platform bitness</a> only on requests it intends
 to download, giving the server the opportunity to serve the right binary. Likewise, they could offer
 users control over the values revealed to servers, or gate access on explicit user interaction via a
 permission prompt or via a settings interface.</p>
    <h2 class="heading settled" data-level="6" id="impl-considerations"><span class="secno">6. </span><span class="content">Implementation Considerations</span><a class="self-link" href="#impl-considerations"></a></h2>
    <h3 class="heading settled" data-level="6.1" id="user-agent"><span class="secno">6.1. </span><span class="content">The 'User-Agent' Header</span><a class="self-link" href="#user-agent"></a></h3>
-   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤④">User agents</a> SHOULD deprecate usage of the <code>User-Agent</code> header by reducing its information granularity
+   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑥">User agents</a> SHOULD deprecate usage of the <code>User-Agent</code> header by reducing its information granularity
 in favor of the Client Hints model described in this document. The header
 is likely to be impossible to remove entirely in the near-term, as existing sites' content negotiation
 code will continue to require its presence (see <a data-link-type="biblio" href="#biblio-rossi2015" title="The Microsoft Edge Rendering Engine that makes the Web just work">[Rossi2015]</a> for a recent example of a new browser’s struggles
 in this area).</p>
-   <p>One approach which might be advisable could be for each <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑤">user agent</a> to lock the value of its <code>User-Agent</code> header, ensuring backwards compatibility by maintaining the crufty declarations of
+   <p>One approach which might be advisable could be for each <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑦">user agent</a> to lock the value of its <code>User-Agent</code> header, ensuring backwards compatibility by maintaining the crufty declarations of
 "like Gecko" and "AppleWebKit/537.36" on into eternity. This can ratchet over time, first freezing
 the version number, then shifting platform and model information to something reasonably generic in
 order to reduce the fingerprint the header provides.</p>
    <h3 class="heading settled" data-level="6.2" id="grease"><span class="secno">6.2. </span><span class="content">GREASE-like UA Brand Lists</span><a class="self-link" href="#grease"></a></h3>
-   <p>History has shown us that there are real incentives for <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑥">user agents</a> to lie about their branding
+   <p>History has shown us that there are real incentives for <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑧">user agents</a> to lie about their branding
 in order to thread the needle of sites' sniffing scripts, and prevent their users from being blocked
 by UA-based allow/block lists.</p>
    <p>Resetting expectations may help to prevent abuse of the <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands⑤">brands</a> list in the short term, but
 probably won’t help in the long run. The world of network protocols introduced the notion of <abbr title="Generate Random Extensions And Sustain Extensibility">GREASE</abbr> <a data-link-type="biblio" href="#biblio-i-dietf-tls-grease" title="Applying GREASE to TLS Extensibility">[I-D.ietf-tls-grease]</a>.
 We could borrow from that concept to tackle this problem.</p>
-   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑦">User agents</a>' <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands⑥">brands</a> containing more than a single entry could encourage
+   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑨">User agents</a>' <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands⑥">brands</a> containing more than a single entry could encourage
 standardized processing of the <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands⑦">brands</a> list. By randomly including additional, intentionally
 incorrect, comma-separated entries with arbitrary ordering, they would reduce the chance that we
 ossify on a few required strings.</p>
@@ -1615,14 +1634,14 @@ <h3 class="heading settled" data-level="6.2" id="grease"><span class="secno">6.2
        <p><code>"Chrome"; v="73", "Xwebs mega"; v="60", "Chromium"; v="73", "(Not;Browser"; v="12"</code></p>
      </ul>
    </ul>
-   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑧">User agents</a> MUST include more than a single value in <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands⑧">brands</a>, where one of these values is an
+   <p><a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥⓪">User agents</a> MUST include more than a single value in <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands⑧">brands</a>, where one of these values is an
 arbitrary value.</p>
    <p>The value order in <a data-link-type="dfn" href="#user-agent-brands" id="ref-for-user-agent-brands⑨">brands</a> MUST change over time to prevent receivers of the header
 from relying on certain values being in certain locations in the list.</p>
-   <p>When choosing GREASE strategies, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑤⑨">user agents</a> SHOULD keep caching variance and analytics use
-cases in mind and minimize variance among identical <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥⓪">user agent</a> versions.</p>
+   <p>When choosing GREASE strategies, <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥①">user agents</a> SHOULD keep caching variance and analytics use
+cases in mind and minimize variance among identical <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥②">user agent</a> versions.</p>
    <p class="note" role="note"><span class="marker">Note:</span> One approach to minimize variance for caching and analytics could be to determine the GREASE
-parts of the UA set at build time, and keep them identical throughout the lifetime of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥①">user agent</a>'s significant version.</p>
+parts of the UA set at build time, and keep them identical throughout the lifetime of the <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#user-agent" id="ref-for-user-agent⑥③">user agent</a>'s significant version.</p>
    <h3 class="heading settled" data-level="6.3" id="sec-ch"><span class="secno">6.3. </span><span class="content">The 'Sec-CH-' prefix</span><a class="self-link" href="#sec-ch"></a></h3>
    <p>Restricting user-land JavaScript code from influencing and modifying UA-CH headers has various
 security related advantages. At the same time, there don’t seem to be any legitimate <a href="https://github.com/WICG/ua-client-hints#use-cases">use-cases</a> which
@@ -1633,8 +1652,8 @@ <h3 class="heading settled" data-level="6.3" id="sec-ch"><span class="secno">6.3
 included in requests without triggering CORS preflights.</p>
    <p>Therefore, request headers defined in this specification include a <code>Sec-CH-</code> prefix.</p>
    <h2 class="heading settled" data-level="7" id="iana"><span class="secno">7. </span><span class="content">IANA Considerations</span><a class="self-link" href="#iana"></a></h2>
-   <p>This document intends to define the <code>Sec-CH-UA</code>, <code>Sec-CH-UA-Arch</code>, <code>Sec-CH-UA-Bitness</code>, <code>Sec-CH-UA-Full-Version</code>, <code>Sec-CH-UA-Mobile</code>, <code>Sec-CH-UA-Model</code>, <code>Sec-CH-UA-Platform</code>, <code>Sec-CH-UA-Platform-Version</code>, <code>Sec-CH-UA-WoW64</code>, and the <code>Sec-CH-UA-Full-Version-List</code> HTTP request
-header fields, and register them in the permanent message header field registry (<a data-link-type="biblio" href="#biblio-rfc3864" title="Registration Procedures for Message Header Fields">[RFC3864]</a>).</p>
+   <p>This document intends to define the <code>Sec-CH-UA</code>, <code>Sec-CH-UA-Arch</code>, <code>Sec-CH-UA-Bitness</code>, <code>Sec-CH-UA-Form-Factor</code>, <code>Sec-CH-UA-Full-Version</code>, <code>Sec-CH-UA-Mobile</code>, <code>Sec-CH-UA-Model</code>, <code>Sec-CH-UA-Platform</code>, <code>Sec-CH-UA-Platform-Version</code>, <code>Sec-CH-UA-WoW64</code>, and the <code>Sec-CH-UA-Full-Version-List</code> HTTP request header fields, and register them in the permanent message
+ header field registry (<a data-link-type="biblio" href="#biblio-rfc3864" title="Registration Procedures for Message Header Fields">[RFC3864]</a>).</p>
    <p>It also intends to deprecate usage of the <code>User-Agent</code> header field.</p>
    <h3 class="heading settled" data-level="7.1" id="iana-ua"><span class="secno">7.1. </span><span class="content">'Sec-CH-UA' Header Field</span><a class="self-link" href="#iana-ua"></a></h3>
    <p>Header field name: Sec-CH-UA</p>
@@ -1654,49 +1673,55 @@ <h3 class="heading settled" data-level="7.3" id="iana-bitness"><span class="secn
    <p>Status: standard</p>
    <p>Author/Change controller: IETF</p>
    <p>Specification document: this specification (<a href="#sec-ch-ua-bitness">§ 3.3 The 'Sec-CH-UA-Bitness' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.4" id="iana-full-version"><span class="secno">7.4. </span><span class="content">'Sec-CH-UA-Full-Version' Header Field</span><a class="self-link" href="#iana-full-version"></a></h3>
+   <h3 class="heading settled" data-level="7.4" id="iana-form-factor"><span class="secno">7.4. </span><span class="content">'Sec-CH-UA-Form-Factor' Header Field</span><a class="self-link" href="#iana-form-factor"></a></h3>
+   <p>Header field name: Sec-CH-UA-Form-Factor</p>
+   <p>Applicable protocol: http</p>
+   <p>Status: standard</p>
+   <p>Author/Change controller: IETF</p>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-form-factor">§ 3.4 The 'Sec-CH-UA-Form-Factor' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.5" id="iana-full-version"><span class="secno">7.5. </span><span class="content">'Sec-CH-UA-Full-Version' Header Field</span><a class="self-link" href="#iana-full-version"></a></h3>
    <p>Header field name: Sec-CH-UA-Full-Version</p>
    <p>Applicable protocol: http</p>
    <p>Status: deprecated</p>
    <p>Author/Change controller: IETF</p>
-   <p>Specification document: this specification (<a href="#sec-ch-ua-full-version">§ 3.4 The 'Sec-CH-UA-Full-Version' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.5" id="iana-full-version-list"><span class="secno">7.5. </span><span class="content">'Sec-CH-UA-Full-Version-List' Header Field</span><a class="self-link" href="#iana-full-version-list"></a></h3>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-full-version">§ 3.5 The 'Sec-CH-UA-Full-Version' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.6" id="iana-full-version-list"><span class="secno">7.6. </span><span class="content">'Sec-CH-UA-Full-Version-List' Header Field</span><a class="self-link" href="#iana-full-version-list"></a></h3>
    <p>Header field name: Sec-CH-UA-Full-Version-List</p>
    <p>Applicable protocol: http</p>
    <p>Status: standard</p>
    <p>Author/Change controller: IETF</p>
-   <p>Specification document: this specification (<a href="#sec-ch-ua-full-version-list">§ 3.5 The 'Sec-CH-UA-Full-Version-List' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.6" id="iana-mobile"><span class="secno">7.6. </span><span class="content">'Sec-CH-UA-Mobile' Header Field</span><a class="self-link" href="#iana-mobile"></a></h3>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-full-version-list">§ 3.6 The 'Sec-CH-UA-Full-Version-List' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.7" id="iana-mobile"><span class="secno">7.7. </span><span class="content">'Sec-CH-UA-Mobile' Header Field</span><a class="self-link" href="#iana-mobile"></a></h3>
    <p>Header field name: Sec-CH-UA-Mobile</p>
    <p>Applicable protocol: http</p>
    <p>Status: standard</p>
    <p>Author/Change controller: IETF</p>
-   <p>Specification document: this specification (<a href="#sec-ch-ua-mobile">§ 3.6 The 'Sec-CH-UA-Mobile' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.7" id="iana-model"><span class="secno">7.7. </span><span class="content">'Sec-CH-UA-Model' Header Field</span><a class="self-link" href="#iana-model"></a></h3>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-mobile">§ 3.7 The 'Sec-CH-UA-Mobile' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.8" id="iana-model"><span class="secno">7.8. </span><span class="content">'Sec-CH-UA-Model' Header Field</span><a class="self-link" href="#iana-model"></a></h3>
    <p>Header field name: Sec-CH-UA-Model</p>
    <p>Applicable protocol: http</p>
    <p>Status: standard</p>
    <p>Author/Change controller: IETF</p>
-   <p>Specification document: this specification (<a href="#sec-ch-ua-model">§ 3.7 The 'Sec-CH-UA-Model' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.8" id="iana-platform"><span class="secno">7.8. </span><span class="content">'Sec-CH-UA-Platform' Header Field</span><a class="self-link" href="#iana-platform"></a></h3>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-model">§ 3.8 The 'Sec-CH-UA-Model' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.9" id="iana-platform"><span class="secno">7.9. </span><span class="content">'Sec-CH-UA-Platform' Header Field</span><a class="self-link" href="#iana-platform"></a></h3>
    <p>Header field name: Sec-CH-UA-Platform</p>
    <p>Applicable protocol: http</p>
    <p>Status: standard</p>
    <p>Author/Change controller: IETF</p>
-   <p>Specification document: this specification (<a href="#sec-ch-ua-platform">§ 3.8 The 'Sec-CH-UA-Platform' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.9" id="iana-platform-version"><span class="secno">7.9. </span><span class="content">'Sec-CH-UA-Platform-Version' Header Field</span><a class="self-link" href="#iana-platform-version"></a></h3>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-platform">§ 3.9 The 'Sec-CH-UA-Platform' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.10" id="iana-platform-version"><span class="secno">7.10. </span><span class="content">'Sec-CH-UA-Platform-Version' Header Field</span><a class="self-link" href="#iana-platform-version"></a></h3>
    <p>Header field name: Sec-CH-UA-Platform-Version</p>
    <p>Applicable protocol: http</p>
    <p>Status: standard</p>
    <p>Author/Change controller: IETF</p>
-   <p>Specification document: this specification (<a href="#sec-ch-ua-platform-version">§ 3.9 The 'Sec-CH-UA-Platform-Version' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.10" id="iana-wow64"><span class="secno">7.10. </span><span class="content">'Sec-CH-UA-WoW64' Header Field</span><a class="self-link" href="#iana-wow64"></a></h3>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-platform-version">§ 3.10 The 'Sec-CH-UA-Platform-Version' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.11" id="iana-wow64"><span class="secno">7.11. </span><span class="content">'Sec-CH-UA-WoW64' Header Field</span><a class="self-link" href="#iana-wow64"></a></h3>
    <p>Header field name: Sec-CH-UA-WoW64</p>
    <p>Applicable protocol: http</p>
    <p>Status: standard</p>
    <p>Author/Change controller: IETF</p>
-   <p>Specification document: this specification (<a href="#sec-ch-ua-wow64">§ 3.10 The 'Sec-CH-UA-WoW64' Header Field</a>)</p>
-   <h3 class="heading settled" data-level="7.11" id="iana-user-agent"><span class="secno">7.11. </span><span class="content">'User-Agent' Header Field</span><a class="self-link" href="#iana-user-agent"></a></h3>
+   <p>Specification document: this specification (<a href="#sec-ch-ua-wow64">§ 3.11 The 'Sec-CH-UA-WoW64' Header Field</a>)</p>
+   <h3 class="heading settled" data-level="7.12" id="iana-user-agent"><span class="secno">7.12. </span><span class="content">'User-Agent' Header Field</span><a class="self-link" href="#iana-user-agent"></a></h3>
    <p>Header field name: User-Agent</p>
    <p>Applicable protocol: http</p>
    <p>Status: deprecated</p>
@@ -1739,9 +1764,11 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#create-a-brand-version-list">create a brand-version list</a><span>, in § 4.1.4</span>
    <li><a href="#create-an-arbitrary-brand">create an arbitrary brand</a><span>, in § 4.1.3</span>
    <li><a href="#create-an-arbitrary-version">create an arbitrary version</a><span>, in § 4.1.3</span>
-   <li><a href="#create-a-unified-platform-version-string">create a unified platform version string</a><span>, in § 3.9</span>
+   <li><a href="#create-a-unified-platform-version-string">create a unified platform version string</a><span>, in § 3.10</span>
    <li><a href="#create-brands">create brands</a><span>, in § 4.1.2</span>
    <li><a href="#user-agent-equivalence-class">equivalence class</a><span>, in § 4.1.2</span>
+   <li><a href="#user-agent-form-factor">form-factor</a><span>, in § 3</span>
+   <li><a href="#dom-uadatavalues-formfactor">formFactor</a><span>, in § 4</span>
    <li><a href="#user-agent-full-version">full version</a><span>, in § 3</span>
    <li><a href="#dom-uadatavalues-fullversionlist">fullVersionList</a><span>, in § 4</span>
    <li><a href="#windoworworkerglobalscope-full-version-list-frozen-array">full version list frozen array</a><span>, in § 4.1.1</span>
@@ -1751,8 +1778,8 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
      <li><a href="#dom-navigatorua-gethighentropyvalues">method for NavigatorUA</a><span>, in § 4.1.6</span>
      <li><a href="#dom-navigatoruadata-gethighentropyvalues">method for NavigatorUAData</a><span>, in § 4</span>
     </ul>
-   <li><a href="#get-the-legacy-windows-version-number">get the legacy Windows version number</a><span>, in § 3.9</span>
-   <li><a href="#get-the-platform-version">get the platform version</a><span>, in § 3.9</span>
+   <li><a href="#get-the-legacy-windows-version-number">get the legacy Windows version number</a><span>, in § 3.10</span>
+   <li><a href="#get-the-platform-version">get the platform version</a><span>, in § 3.10</span>
    <li>
     mobile
     <ul>
@@ -1782,18 +1809,19 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#user-agent-platform-brand">platform brand</a><span>, in § 3</span>
    <li><a href="#user-agent-platform-version">platform version</a><span>, in § 3</span>
    <li><a href="#dom-uadatavalues-platformversion">platformVersion</a><span>, in § 4</span>
-   <li><a href="#abstract-opdef-return-the-sec-ch-ua-full-version-list-value-for-a-request">return the Sec-CH-UA-Full-Version-List value for a request</a><span>, in § 3.5</span>
+   <li><a href="#abstract-opdef-return-the-sec-ch-ua-full-version-list-value-for-a-request">return the Sec-CH-UA-Full-Version-List value for a request</a><span>, in § 3.6</span>
    <li><a href="#abstract-opdef-return-the-sec-ch-ua-value-for-a-request">return the Sec-CH-UA value for a request</a><span>, in § 3.1</span>
    <li><a href="#http-headerdef-sec-ch-ua">Sec-CH-UA</a><span>, in § 3.1</span>
    <li><a href="#http-headerdef-sec-ch-ua-arch">Sec-CH-UA-Arch</a><span>, in § 3.2</span>
    <li><a href="#http-headerdef-sec-ch-ua-bitness">Sec-CH-UA-Bitness</a><span>, in § 3.3</span>
-   <li><a href="#http-headerdef-sec-ch-ua-full-version">Sec-CH-UA-Full-Version</a><span>, in § 3.4</span>
-   <li><a href="#http-headerdef-sec-ch-ua-full-version-list">Sec-CH-UA-Full-Version-List</a><span>, in § 3.5</span>
-   <li><a href="#http-headerdef-sec-ch-ua-mobile">Sec-CH-UA-Mobile</a><span>, in § 3.6</span>
-   <li><a href="#http-headerdef-sec-ch-ua-model">Sec-CH-UA-Model</a><span>, in § 3.7</span>
-   <li><a href="#http-headerdef-sec-ch-ua-platform">Sec-CH-UA-Platform</a><span>, in § 3.8</span>
-   <li><a href="#http-headerdef-sec-ch-ua-platform-version">Sec-CH-UA-Platform-Version</a><span>, in § 3.9</span>
-   <li><a href="#http-headerdef-sec-ch-ua-wow64">Sec-CH-UA-WoW64</a><span>, in § 3.10</span>
+   <li><a href="#http-headerdef-sec-ch-ua-form-factor">Sec-CH-UA-Form-Factor</a><span>, in § 3.4</span>
+   <li><a href="#http-headerdef-sec-ch-ua-full-version">Sec-CH-UA-Full-Version</a><span>, in § 3.5</span>
+   <li><a href="#http-headerdef-sec-ch-ua-full-version-list">Sec-CH-UA-Full-Version-List</a><span>, in § 3.6</span>
+   <li><a href="#http-headerdef-sec-ch-ua-mobile">Sec-CH-UA-Mobile</a><span>, in § 3.7</span>
+   <li><a href="#http-headerdef-sec-ch-ua-model">Sec-CH-UA-Model</a><span>, in § 3.8</span>
+   <li><a href="#http-headerdef-sec-ch-ua-platform">Sec-CH-UA-Platform</a><span>, in § 3.9</span>
+   <li><a href="#http-headerdef-sec-ch-ua-platform-version">Sec-CH-UA-Platform-Version</a><span>, in § 3.10</span>
+   <li><a href="#http-headerdef-sec-ch-ua-wow64">Sec-CH-UA-WoW64</a><span>, in § 3.11</span>
    <li><a href="#user-agent-significant-version">significant version</a><span>, in § 3</span>
    <li>
     toJSON()
@@ -1809,25 +1837,25 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#dom-uadatavalues-wow64">wow64</a><span>, in § 4</span>
    <li><a href="#user-agent-wow64-ness">wow64-ness</a><span>, in § 3</span>
   </ul>
-  <aside aria-labelledby="infopaneltitle-for-3997f5197f70f1d443e7fae4bfdf7813" class="dfn-panel" data-for="3997f5197f70f1d443e7fae4bfdf7813" id="infopanel-for-3997f5197f70f1d443e7fae4bfdf7813" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-3997f5197f70f1d443e7fae4bfdf7813" class="dfn-panel" data-for="3997f5197f70f1d443e7fae4bfdf7813" id="infopanel-for-3997f5197f70f1d443e7fae4bfdf7813">
    <span id="infopaneltitle-for-3997f5197f70f1d443e7fae4bfdf7813" style="display:none">Info about the 'active fingerprinting' external reference.</span><a href="https://w3c.github.io/fingerprinting-guidance/#dfn-active-fingerprinting">https://w3c.github.io/fingerprinting-guidance/#dfn-active-fingerprinting</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-active-fingerprinting">5.3. Fingerprinting</a> <a href="#ref-for-dfn-active-fingerprinting①">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-2b590f303e1e5fffbc3446b9b26c8e4f" class="dfn-panel" data-for="2b590f303e1e5fffbc3446b9b26c8e4f" id="infopanel-for-2b590f303e1e5fffbc3446b9b26c8e4f" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-2b590f303e1e5fffbc3446b9b26c8e4f" class="dfn-panel" data-for="2b590f303e1e5fffbc3446b9b26c8e4f" id="infopanel-for-2b590f303e1e5fffbc3446b9b26c8e4f">
    <span id="infopaneltitle-for-2b590f303e1e5fffbc3446b9b26c8e4f" style="display:none">Info about the 'best practice 1' external reference.</span><a href="https://w3c.github.io/fingerprinting-guidance/#avoid-passive-increases">https://w3c.github.io/fingerprinting-guidance/#avoid-passive-increases</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-avoid-passive-increases">1. Introduction</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-cfc84645713774846e370ab47464bdd6" class="dfn-panel" data-for="cfc84645713774846e370ab47464bdd6" id="infopanel-for-cfc84645713774846e370ab47464bdd6" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-cfc84645713774846e370ab47464bdd6" class="dfn-panel" data-for="cfc84645713774846e370ab47464bdd6" id="infopanel-for-cfc84645713774846e370ab47464bdd6">
    <span id="infopaneltitle-for-cfc84645713774846e370ab47464bdd6" style="display:none">Info about the 'current realm' external reference.</span><a href="https://tc39.es/ecma262/#current-realm">https://tc39.es/ecma262/#current-realm</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-current-realm">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-e602a07ee228912cb928210a662599bb" class="dfn-panel" data-for="e602a07ee228912cb928210a662599bb" id="infopanel-for-e602a07ee228912cb928210a662599bb" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-e602a07ee228912cb928210a662599bb" class="dfn-panel" data-for="e602a07ee228912cb928210a662599bb" id="infopanel-for-e602a07ee228912cb928210a662599bb">
    <span id="infopaneltitle-for-e602a07ee228912cb928210a662599bb" style="display:none">Info about the 'passive fingerprinting' external reference.</span><a href="https://w3c.github.io/fingerprinting-guidance/#dfn-passive-fingerprinting">https://w3c.github.io/fingerprinting-guidance/#dfn-passive-fingerprinting</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-passive-fingerprinting">Unnumbered Section</a>
@@ -1836,71 +1864,77 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-dfn-passive-fingerprinting③">5.3. Fingerprinting</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-0e616968f50afe67919c71544b7ff178" class="dfn-panel" data-for="0e616968f50afe67919c71544b7ff178" id="infopanel-for-0e616968f50afe67919c71544b7ff178" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-0e616968f50afe67919c71544b7ff178" class="dfn-panel" data-for="0e616968f50afe67919c71544b7ff178" id="infopanel-for-0e616968f50afe67919c71544b7ff178">
    <span id="infopaneltitle-for-0e616968f50afe67919c71544b7ff178" style="display:none">Info about the 'permission task source' external reference.</span><a href="https://w3c.github.io/permissions/#dfn-permissions-task-source">https://w3c.github.io/permissions/#dfn-permissions-task-source</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-permissions-task-source">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-f6ea1e00f886e38f90f930c2bb07d289" class="dfn-panel" data-for="f6ea1e00f886e38f90f930c2bb07d289" id="infopanel-for-f6ea1e00f886e38f90f930c2bb07d289" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-f6ea1e00f886e38f90f930c2bb07d289" class="dfn-panel" data-for="f6ea1e00f886e38f90f930c2bb07d289" id="infopanel-for-f6ea1e00f886e38f90f930c2bb07d289">
    <span id="infopaneltitle-for-f6ea1e00f886e38f90f930c2bb07d289" style="display:none">Info about the 'append client hints to request' external reference.</span><a href="https://wicg.github.io/client-hints-infrastructure/#abstract-opdef-append-client-hints-to-request">https://wicg.github.io/client-hints-infrastructure/#abstract-opdef-append-client-hints-to-request</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-abstract-opdef-append-client-hints-to-request">5.2. Delegation</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-838052d91918daa0341851a344650d06" class="dfn-panel" data-for="838052d91918daa0341851a344650d06" id="infopanel-for-838052d91918daa0341851a344650d06" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-838052d91918daa0341851a344650d06" class="dfn-panel" data-for="838052d91918daa0341851a344650d06" id="infopanel-for-838052d91918daa0341851a344650d06">
    <span id="infopaneltitle-for-838052d91918daa0341851a344650d06" style="display:none">Info about the 'client hints token' external reference.</span><a href="https://wicg.github.io/client-hints-infrastructure/#client-hints-token">https://wicg.github.io/client-hints-infrastructure/#client-hints-token</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-client-hints-token">3.10. The 'Sec-CH-UA-WoW64' Header Field</a>
+    <li><a href="#ref-for-client-hints-token">3.11. The 'Sec-CH-UA-WoW64' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-1f9c7a637d2441cd6f3af324d00e6a87" class="dfn-panel" data-for="1f9c7a637d2441cd6f3af324d00e6a87" id="infopanel-for-1f9c7a637d2441cd6f3af324d00e6a87" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-1f9c7a637d2441cd6f3af324d00e6a87" class="dfn-panel" data-for="1f9c7a637d2441cd6f3af324d00e6a87" id="infopanel-for-1f9c7a637d2441cd6f3af324d00e6a87">
    <span id="infopaneltitle-for-1f9c7a637d2441cd6f3af324d00e6a87" style="display:none">Info about the 'low entropy hint table' external reference.</span><a href="https://wicg.github.io/client-hints-infrastructure/#low-entropy-hint-table">https://wicg.github.io/client-hints-infrastructure/#low-entropy-hint-table</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-low-entropy-hint-table">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-low-entropy-hint-table①">3.6. The 'Sec-CH-UA-Mobile' Header Field</a>
-    <li><a href="#ref-for-low-entropy-hint-table②">3.8. The 'Sec-CH-UA-Platform' Header Field</a>
+    <li><a href="#ref-for-low-entropy-hint-table①">3.7. The 'Sec-CH-UA-Mobile' Header Field</a>
+    <li><a href="#ref-for-low-entropy-hint-table②">3.9. The 'Sec-CH-UA-Platform' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-cc29bfc56397134563b20d679eafd421" class="dfn-panel" data-for="cc29bfc56397134563b20d679eafd421" id="infopanel-for-cc29bfc56397134563b20d679eafd421" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-cc29bfc56397134563b20d679eafd421" class="dfn-panel" data-for="cc29bfc56397134563b20d679eafd421" id="infopanel-for-cc29bfc56397134563b20d679eafd421">
    <span id="infopaneltitle-for-cc29bfc56397134563b20d679eafd421" style="display:none">Info about the 'policy-controlled client hints features' external reference.</span><a href="https://wicg.github.io/client-hints-infrastructure/#policy-controlled-client-hints-features">https://wicg.github.io/client-hints-infrastructure/#policy-controlled-client-hints-features</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-policy-controlled-client-hints-features">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-policy-controlled-client-hints-features①">3.6. The 'Sec-CH-UA-Mobile' Header Field</a>
-    <li><a href="#ref-for-policy-controlled-client-hints-features②">3.8. The 'Sec-CH-UA-Platform' Header Field</a>
+    <li><a href="#ref-for-policy-controlled-client-hints-features①">3.7. The 'Sec-CH-UA-Mobile' Header Field</a>
+    <li><a href="#ref-for-policy-controlled-client-hints-features②">3.9. The 'Sec-CH-UA-Platform' Header Field</a>
+   </ul>
+  </aside>
+  <aside aria-labelledby="infopaneltitle-for-8184daca5125998da6a4187ca2a1b4d2" class="dfn-panel" data-for="8184daca5125998da6a4187ca2a1b4d2" id="infopanel-for-8184daca5125998da6a4187ca2a1b4d2">
+   <span id="infopaneltitle-for-8184daca5125998da6a4187ca2a1b4d2" style="display:none">Info about the 'devicecompat' external reference.</span><a href="https://compat.spec.whatwg.org/#devicecompat">https://compat.spec.whatwg.org/#devicecompat</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-devicecompat">3. User Agent Hints</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-3c82b19be23a00eb4bb6896ec20cd7aa" class="dfn-panel" data-for="3c82b19be23a00eb4bb6896ec20cd7aa" id="infopanel-for-3c82b19be23a00eb4bb6896ec20cd7aa" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-3c82b19be23a00eb4bb6896ec20cd7aa" class="dfn-panel" data-for="3c82b19be23a00eb4bb6896ec20cd7aa" id="infopanel-for-3c82b19be23a00eb4bb6896ec20cd7aa">
    <span id="infopaneltitle-for-3c82b19be23a00eb4bb6896ec20cd7aa" style="display:none">Info about the 'Navigator' external reference.</span><a href="https://html.spec.whatwg.org/multipage/system-state.html#navigator">https://html.spec.whatwg.org/multipage/system-state.html#navigator</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-navigator">4. Interface</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-e027d9579874c4c69c0da88943bc748f" class="dfn-panel" data-for="e027d9579874c4c69c0da88943bc748f" id="infopanel-for-e027d9579874c4c69c0da88943bc748f" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-e027d9579874c4c69c0da88943bc748f" class="dfn-panel" data-for="e027d9579874c4c69c0da88943bc748f" id="infopanel-for-e027d9579874c4c69c0da88943bc748f">
    <span id="infopaneltitle-for-e027d9579874c4c69c0da88943bc748f" style="display:none">Info about the 'WindowOrWorkerGlobalScope' external reference.</span><a href="https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope">https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-windoworworkerglobalscope">4.1.1. WindowOrWorkerGlobalScope</a> <a href="#ref-for-windoworworkerglobalscope①">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-f9c60134d1166b5cbe490d111703a3b0" class="dfn-panel" data-for="f9c60134d1166b5cbe490d111703a3b0" id="infopanel-for-f9c60134d1166b5cbe490d111703a3b0" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-f9c60134d1166b5cbe490d111703a3b0" class="dfn-panel" data-for="f9c60134d1166b5cbe490d111703a3b0" id="infopanel-for-f9c60134d1166b5cbe490d111703a3b0">
    <span id="infopaneltitle-for-f9c60134d1166b5cbe490d111703a3b0" style="display:none">Info about the 'WorkerNavigator' external reference.</span><a href="https://html.spec.whatwg.org/multipage/workers.html#workernavigator">https://html.spec.whatwg.org/multipage/workers.html#workernavigator</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-workernavigator">4. Interface</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-3a2763fcaa6bc82693554cf36780c0dd" class="dfn-panel" data-for="3a2763fcaa6bc82693554cf36780c0dd" id="infopanel-for-3a2763fcaa6bc82693554cf36780c0dd" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-3a2763fcaa6bc82693554cf36780c0dd" class="dfn-panel" data-for="3a2763fcaa6bc82693554cf36780c0dd" id="infopanel-for-3a2763fcaa6bc82693554cf36780c0dd">
    <span id="infopaneltitle-for-3a2763fcaa6bc82693554cf36780c0dd" style="display:none">Info about the 'in parallel' external reference.</span><a href="https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel">https://html.spec.whatwg.org/multipage/infrastructure.html#in-parallel</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-in-parallel">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-da7ed5f190c4eedd375552d6f7876301" class="dfn-panel" data-for="da7ed5f190c4eedd375552d6f7876301" id="infopanel-for-da7ed5f190c4eedd375552d6f7876301" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-da7ed5f190c4eedd375552d6f7876301" class="dfn-panel" data-for="da7ed5f190c4eedd375552d6f7876301" id="infopanel-for-da7ed5f190c4eedd375552d6f7876301">
    <span id="infopaneltitle-for-da7ed5f190c4eedd375552d6f7876301" style="display:none">Info about the 'queue a task' external reference.</span><a href="https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-task">https://html.spec.whatwg.org/multipage/webappapis.html#queue-a-task</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-queue-a-task">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-2233058c8f0998915af8393ee2abbc1d" class="dfn-panel" data-for="2233058c8f0998915af8393ee2abbc1d" id="infopanel-for-2233058c8f0998915af8393ee2abbc1d" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-2233058c8f0998915af8393ee2abbc1d" class="dfn-panel" data-for="2233058c8f0998915af8393ee2abbc1d" id="infopanel-for-2233058c8f0998915af8393ee2abbc1d">
    <span id="infopaneltitle-for-2233058c8f0998915af8393ee2abbc1d" style="display:none">Info about the 'relevant global object' external reference.</span><a href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global">https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-concept-relevant-global">4.1.5. Getters</a>
@@ -1908,29 +1942,29 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-concept-relevant-global③">4.1.7. toJSON method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-fcfc8b0ed220faa237969aed00e2586d" class="dfn-panel" data-for="fcfc8b0ed220faa237969aed00e2586d" id="infopanel-for-fcfc8b0ed220faa237969aed00e2586d" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-fcfc8b0ed220faa237969aed00e2586d" class="dfn-panel" data-for="fcfc8b0ed220faa237969aed00e2586d" id="infopanel-for-fcfc8b0ed220faa237969aed00e2586d">
    <span id="infopaneltitle-for-fcfc8b0ed220faa237969aed00e2586d" style="display:none">Info about the 'append' external reference.</span><a href="https://infra.spec.whatwg.org/#list-append">https://infra.spec.whatwg.org/#list-append</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-list-append">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-list-append①">(2)</a> <a href="#ref-for-list-append②">(3)</a> <a href="#ref-for-list-append③">(4)</a> <a href="#ref-for-list-append④">(5)</a> <a href="#ref-for-list-append⑤">(6)</a>
+    <li><a href="#ref-for-list-append">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-list-append①">(2)</a> <a href="#ref-for-list-append②">(3)</a> <a href="#ref-for-list-append③">(4)</a> <a href="#ref-for-list-append④">(5)</a> <a href="#ref-for-list-append⑤">(6)</a>
     <li><a href="#ref-for-list-append⑥">4.1.2. Create brands</a> <a href="#ref-for-list-append⑦">(2)</a>
     <li><a href="#ref-for-list-append⑧">4.1.3. Create arbitrary brand and version values</a> <a href="#ref-for-list-append⑨">(2)</a> <a href="#ref-for-list-append①⓪">(3)</a>
     <li><a href="#ref-for-list-append①①">4.1.4. Create a brand-version list</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-e1e46f5ff1289bed869101f3ad873031" class="dfn-panel" data-for="e1e46f5ff1289bed869101f3ad873031" id="infopanel-for-e1e46f5ff1289bed869101f3ad873031" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-e1e46f5ff1289bed869101f3ad873031" class="dfn-panel" data-for="e1e46f5ff1289bed869101f3ad873031" id="infopanel-for-e1e46f5ff1289bed869101f3ad873031">
    <span id="infopaneltitle-for-e1e46f5ff1289bed869101f3ad873031" style="display:none">Info about the 'ascii alpha' external reference.</span><a href="https://infra.spec.whatwg.org/#ascii-alpha">https://infra.spec.whatwg.org/#ascii-alpha</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-ascii-alpha">3. User Agent Hints</a>
     <li><a href="#ref-for-ascii-alpha①">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-f7ea7339a0bfdd0024f0cbd9cf67997e" class="dfn-panel" data-for="f7ea7339a0bfdd0024f0cbd9cf67997e" id="infopanel-for-f7ea7339a0bfdd0024f0cbd9cf67997e" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-f7ea7339a0bfdd0024f0cbd9cf67997e" class="dfn-panel" data-for="f7ea7339a0bfdd0024f0cbd9cf67997e" id="infopanel-for-f7ea7339a0bfdd0024f0cbd9cf67997e">
    <span id="infopaneltitle-for-f7ea7339a0bfdd0024f0cbd9cf67997e" style="display:none">Info about the 'ascii byte' external reference.</span><a href="https://infra.spec.whatwg.org/#ascii-byte">https://infra.spec.whatwg.org/#ascii-byte</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-ascii-byte">4.1.3. Create arbitrary brand and version values</a> <a href="#ref-for-ascii-byte①">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-7618b9a6d44febb7e784c8f39faac140" class="dfn-panel" data-for="7618b9a6d44febb7e784c8f39faac140" id="infopanel-for-7618b9a6d44febb7e784c8f39faac140" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-7618b9a6d44febb7e784c8f39faac140" class="dfn-panel" data-for="7618b9a6d44febb7e784c8f39faac140" id="infopanel-for-7618b9a6d44febb7e784c8f39faac140">
    <span id="infopaneltitle-for-7618b9a6d44febb7e784c8f39faac140" style="display:none">Info about the 'assert' external reference.</span><a href="https://infra.spec.whatwg.org/#assert">https://infra.spec.whatwg.org/#assert</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-assert">4.1.2. Create brands</a>
@@ -1938,248 +1972,251 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-assert②">4.1.4. Create a brand-version list</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-b554fa62e66e696c005b983f794a74e2" class="dfn-panel" data-for="b554fa62e66e696c005b983f794a74e2" id="infopanel-for-b554fa62e66e696c005b983f794a74e2" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-b554fa62e66e696c005b983f794a74e2" class="dfn-panel" data-for="b554fa62e66e696c005b983f794a74e2" id="infopanel-for-b554fa62e66e696c005b983f794a74e2">
    <span id="infopaneltitle-for-b554fa62e66e696c005b983f794a74e2" style="display:none">Info about the 'concatenation' external reference.</span><a href="https://infra.spec.whatwg.org/#string-concatenate">https://infra.spec.whatwg.org/#string-concatenate</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-string-concatenate">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-string-concatenate①">(2)</a>
+    <li><a href="#ref-for-string-concatenate">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-string-concatenate①">(2)</a>
     <li><a href="#ref-for-string-concatenate②">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-eb75379b05abc264a531a791358e1eba" class="dfn-panel" data-for="eb75379b05abc264a531a791358e1eba" id="infopanel-for-eb75379b05abc264a531a791358e1eba" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-eb75379b05abc264a531a791358e1eba" class="dfn-panel" data-for="eb75379b05abc264a531a791358e1eba" id="infopanel-for-eb75379b05abc264a531a791358e1eba">
    <span id="infopaneltitle-for-eb75379b05abc264a531a791358e1eba" style="display:none">Info about the 'contain' external reference.</span><a href="https://infra.spec.whatwg.org/#list-contain">https://infra.spec.whatwg.org/#list-contain</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-list-contain">4.1.6. getHighEntropyValues method</a> <a href="#ref-for-list-contain①">(2)</a> <a href="#ref-for-list-contain②">(3)</a> <a href="#ref-for-list-contain③">(4)</a> <a href="#ref-for-list-contain④">(5)</a> <a href="#ref-for-list-contain⑤">(6)</a> <a href="#ref-for-list-contain⑥">(7)</a>
+    <li><a href="#ref-for-list-contain">4.1.6. getHighEntropyValues method</a> <a href="#ref-for-list-contain①">(2)</a> <a href="#ref-for-list-contain②">(3)</a> <a href="#ref-for-list-contain③">(4)</a> <a href="#ref-for-list-contain④">(5)</a> <a href="#ref-for-list-contain⑤">(6)</a> <a href="#ref-for-list-contain⑥">(7)</a> <a href="#ref-for-list-contain⑦">(8)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-a46173c17cabb7b019631b97ab2f07c6" class="dfn-panel" data-for="a46173c17cabb7b019631b97ab2f07c6" id="infopanel-for-a46173c17cabb7b019631b97ab2f07c6" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-a46173c17cabb7b019631b97ab2f07c6" class="dfn-panel" data-for="a46173c17cabb7b019631b97ab2f07c6" id="infopanel-for-a46173c17cabb7b019631b97ab2f07c6">
    <span id="infopaneltitle-for-a46173c17cabb7b019631b97ab2f07c6" style="display:none">Info about the 'is not empty' external reference.</span><a href="https://infra.spec.whatwg.org/#list-is-empty">https://infra.spec.whatwg.org/#list-is-empty</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-list-is-empty">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-c783a9adeafb412d3bdeaeb1c6a29d96" class="dfn-panel" data-for="c783a9adeafb412d3bdeaeb1c6a29d96" id="infopanel-for-c783a9adeafb412d3bdeaeb1c6a29d96" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-c783a9adeafb412d3bdeaeb1c6a29d96" class="dfn-panel" data-for="c783a9adeafb412d3bdeaeb1c6a29d96" id="infopanel-for-c783a9adeafb412d3bdeaeb1c6a29d96">
    <span id="infopaneltitle-for-c783a9adeafb412d3bdeaeb1c6a29d96" style="display:none">Info about the 'item' external reference.</span><a href="https://infra.spec.whatwg.org/#list-item">https://infra.spec.whatwg.org/#list-item</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-list-item">4.1.2. Create brands</a> <a href="#ref-for-list-item①">(2)</a>
     <li><a href="#ref-for-list-item②">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-fafd38d2108e357bcc9a6fd7f3cd04a7" class="dfn-panel" data-for="fafd38d2108e357bcc9a6fd7f3cd04a7" id="infopanel-for-fafd38d2108e357bcc9a6fd7f3cd04a7" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-fafd38d2108e357bcc9a6fd7f3cd04a7" class="dfn-panel" data-for="fafd38d2108e357bcc9a6fd7f3cd04a7" id="infopanel-for-fafd38d2108e357bcc9a6fd7f3cd04a7">
    <span id="infopaneltitle-for-fafd38d2108e357bcc9a6fd7f3cd04a7" style="display:none">Info about the 'list' external reference.</span><a href="https://infra.spec.whatwg.org/#list">https://infra.spec.whatwg.org/#list</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-list">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-list①">(2)</a> <a href="#ref-for-list②">(3)</a>
+    <li><a href="#ref-for-list">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-list①">(2)</a> <a href="#ref-for-list②">(3)</a>
     <li><a href="#ref-for-list③">4.1.1. WindowOrWorkerGlobalScope</a>
     <li><a href="#ref-for-list④">4.1.2. Create brands</a>
     <li><a href="#ref-for-list⑤">4.1.3. Create arbitrary brand and version values</a> <a href="#ref-for-list⑥">(2)</a>
     <li><a href="#ref-for-list⑦">4.1.4. Create a brand-version list</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-f5d2c37d1d4cf75f0a4c5c22df3b6431" class="dfn-panel" data-for="f5d2c37d1d4cf75f0a4c5c22df3b6431" id="infopanel-for-f5d2c37d1d4cf75f0a4c5c22df3b6431" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-f5d2c37d1d4cf75f0a4c5c22df3b6431" class="dfn-panel" data-for="f5d2c37d1d4cf75f0a4c5c22df3b6431" id="infopanel-for-f5d2c37d1d4cf75f0a4c5c22df3b6431">
    <span id="infopaneltitle-for-f5d2c37d1d4cf75f0a4c5c22df3b6431" style="display:none">Info about the 'pop' external reference.</span><a href="https://infra.spec.whatwg.org/#stack-pop">https://infra.spec.whatwg.org/#stack-pop</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-stack-pop">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-297d79b515c58dd17d08f7a65252af8f" class="dfn-panel" data-for="297d79b515c58dd17d08f7a65252af8f" id="infopanel-for-297d79b515c58dd17d08f7a65252af8f" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-297d79b515c58dd17d08f7a65252af8f" class="dfn-panel" data-for="297d79b515c58dd17d08f7a65252af8f" id="infopanel-for-297d79b515c58dd17d08f7a65252af8f">
    <span id="infopaneltitle-for-297d79b515c58dd17d08f7a65252af8f" style="display:none">Info about the 'push' external reference.</span><a href="https://infra.spec.whatwg.org/#stack-push">https://infra.spec.whatwg.org/#stack-push</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-stack-push">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-bed8381510f5967f5d37a33de776e857" class="dfn-panel" data-for="bed8381510f5967f5d37a33de776e857" id="infopanel-for-bed8381510f5967f5d37a33de776e857" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-bed8381510f5967f5d37a33de776e857" class="dfn-panel" data-for="bed8381510f5967f5d37a33de776e857" id="infopanel-for-bed8381510f5967f5d37a33de776e857">
    <span id="infopaneltitle-for-bed8381510f5967f5d37a33de776e857" style="display:none">Info about the 'size' external reference.</span><a href="https://infra.spec.whatwg.org/#list-size">https://infra.spec.whatwg.org/#list-size</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-list-size">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-fc63a7270d7480e6e37f57b7d6b2b829" class="dfn-panel" data-for="fc63a7270d7480e6e37f57b7d6b2b829" id="infopanel-for-fc63a7270d7480e6e37f57b7d6b2b829" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-fc63a7270d7480e6e37f57b7d6b2b829" class="dfn-panel" data-for="fc63a7270d7480e6e37f57b7d6b2b829" id="infopanel-for-fc63a7270d7480e6e37f57b7d6b2b829">
    <span id="infopaneltitle-for-fc63a7270d7480e6e37f57b7d6b2b829" style="display:none">Info about the 'split on ascii whitespace' external reference.</span><a href="https://infra.spec.whatwg.org/#split-on-ascii-whitespace">https://infra.spec.whatwg.org/#split-on-ascii-whitespace</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-split-on-ascii-whitespace">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-b4227545bc14365743d4f4634b1f6d3d" class="dfn-panel" data-for="b4227545bc14365743d4f4634b1f6d3d" id="infopanel-for-b4227545bc14365743d4f4634b1f6d3d" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-b4227545bc14365743d4f4634b1f6d3d" class="dfn-panel" data-for="b4227545bc14365743d4f4634b1f6d3d" id="infopanel-for-b4227545bc14365743d4f4634b1f6d3d">
    <span id="infopaneltitle-for-b4227545bc14365743d4f4634b1f6d3d" style="display:none">Info about the 'stack' external reference.</span><a href="https://infra.spec.whatwg.org/#stack">https://infra.spec.whatwg.org/#stack</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-stack">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-adb176cd03e93496f5eaada8f9e4dc0f" class="dfn-panel" data-for="adb176cd03e93496f5eaada8f9e4dc0f" id="infopanel-for-adb176cd03e93496f5eaada8f9e4dc0f" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-adb176cd03e93496f5eaada8f9e4dc0f" class="dfn-panel" data-for="adb176cd03e93496f5eaada8f9e4dc0f" id="infopanel-for-adb176cd03e93496f5eaada8f9e4dc0f">
    <span id="infopaneltitle-for-adb176cd03e93496f5eaada8f9e4dc0f" style="display:none">Info about the 'strictly split a string' external reference.</span><a href="https://infra.spec.whatwg.org/#strictly-split">https://infra.spec.whatwg.org/#strictly-split</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-strictly-split">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-strictly-split">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-40b59bc325bd4d66701dfd8b7f1847c0" class="dfn-panel" data-for="40b59bc325bd4d66701dfd8b7f1847c0" id="infopanel-for-40b59bc325bd4d66701dfd8b7f1847c0" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-40b59bc325bd4d66701dfd8b7f1847c0" class="dfn-panel" data-for="40b59bc325bd4d66701dfd8b7f1847c0" id="infopanel-for-40b59bc325bd4d66701dfd8b7f1847c0">
    <span id="infopaneltitle-for-40b59bc325bd4d66701dfd8b7f1847c0" style="display:none">Info about the 'string' external reference.</span><a href="https://infra.spec.whatwg.org/#string">https://infra.spec.whatwg.org/#string</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-string">4.1.2. Create brands</a>
     <li><a href="#ref-for-string①">4.1.3. Create arbitrary brand and version values</a> <a href="#ref-for-string②">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-de718597721576a078bc4d521df323a6" class="dfn-panel" data-for="de718597721576a078bc4d521df323a6" id="infopanel-for-de718597721576a078bc4d521df323a6" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-de718597721576a078bc4d521df323a6" class="dfn-panel" data-for="de718597721576a078bc4d521df323a6" id="infopanel-for-de718597721576a078bc4d521df323a6">
    <span id="infopaneltitle-for-de718597721576a078bc4d521df323a6" style="display:none">Info about the 'strip leading and trailing ascii whitespace' external reference.</span><a href="https://infra.spec.whatwg.org/#strip-leading-and-trailing-ascii-whitespace">https://infra.spec.whatwg.org/#strip-leading-and-trailing-ascii-whitespace</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-strip-leading-and-trailing-ascii-whitespace">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-52bdfc59f72538efe80e2a86647ac489" class="dfn-panel" data-for="52bdfc59f72538efe80e2a86647ac489" id="infopanel-for-52bdfc59f72538efe80e2a86647ac489" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-52bdfc59f72538efe80e2a86647ac489" class="dfn-panel" data-for="52bdfc59f72538efe80e2a86647ac489" id="infopanel-for-52bdfc59f72538efe80e2a86647ac489">
    <span id="infopaneltitle-for-52bdfc59f72538efe80e2a86647ac489" style="display:none">Info about the 'user agent' external reference.</span><a href="https://infra.spec.whatwg.org/#user-agent">https://infra.spec.whatwg.org/#user-agent</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent">3. User Agent Hints</a> <a href="#ref-for-user-agent①">(2)</a> <a href="#ref-for-user-agent②">(3)</a> <a href="#ref-for-user-agent③">(4)</a> <a href="#ref-for-user-agent④">(5)</a> <a href="#ref-for-user-agent⑤">(6)</a> <a href="#ref-for-user-agent⑥">(7)</a> <a href="#ref-for-user-agent⑦">(8)</a> <a href="#ref-for-user-agent⑧">(9)</a> <a href="#ref-for-user-agent⑨">(10)</a> <a href="#ref-for-user-agent①⓪">(11)</a> <a href="#ref-for-user-agent①①">(12)</a> <a href="#ref-for-user-agent①②">(13)</a> <a href="#ref-for-user-agent①③">(14)</a> <a href="#ref-for-user-agent①④">(15)</a> <a href="#ref-for-user-agent①⑤">(16)</a> <a href="#ref-for-user-agent①⑥">(17)</a> <a href="#ref-for-user-agent①⑦">(18)</a> <a href="#ref-for-user-agent①⑧">(19)</a>
     <li><a href="#ref-for-user-agent①⑨">3.1. The 'Sec-CH-UA' Header Field</a> <a href="#ref-for-user-agent②⓪">(2)</a> <a href="#ref-for-user-agent②①">(3)</a>
     <li><a href="#ref-for-user-agent②②">3.2. The 'Sec-CH-UA-Arch' Header Field</a>
     <li><a href="#ref-for-user-agent②③">3.3. The 'Sec-CH-UA-Bitness' Header Field</a>
-    <li><a href="#ref-for-user-agent②④">3.6. The 'Sec-CH-UA-Mobile' Header Field</a>
-    <li><a href="#ref-for-user-agent②⑤">3.7. The 'Sec-CH-UA-Model' Header Field</a>
-    <li><a href="#ref-for-user-agent②⑥">3.8. The 'Sec-CH-UA-Platform' Header Field</a>
-    <li><a href="#ref-for-user-agent②⑦">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
-    <li><a href="#ref-for-user-agent②⑧">3.10. The 'Sec-CH-UA-WoW64' Header Field</a>
-    <li><a href="#ref-for-user-agent②⑨">4. Interface</a>
-    <li><a href="#ref-for-user-agent③⓪">4.1.1. WindowOrWorkerGlobalScope</a> <a href="#ref-for-user-agent③①">(2)</a>
-    <li><a href="#ref-for-user-agent③②">4.1.2. Create brands</a> <a href="#ref-for-user-agent③③">(2)</a> <a href="#ref-for-user-agent③④">(3)</a>
-    <li><a href="#ref-for-user-agent③⑤">4.1.3. Create arbitrary brand and version values</a>
-    <li><a href="#ref-for-user-agent③⑥">4.1.5. Getters</a> <a href="#ref-for-user-agent③⑦">(2)</a>
-    <li><a href="#ref-for-user-agent③⑧">4.1.6. getHighEntropyValues method</a> <a href="#ref-for-user-agent③⑨">(2)</a> <a href="#ref-for-user-agent④⓪">(3)</a> <a href="#ref-for-user-agent④①">(4)</a> <a href="#ref-for-user-agent④②">(5)</a> <a href="#ref-for-user-agent④③">(6)</a>
-    <li><a href="#ref-for-user-agent④④">4.1.7. toJSON method</a> <a href="#ref-for-user-agent④⑤">(2)</a>
-    <li><a href="#ref-for-user-agent④⑥">5.1. Secure Transport</a>
-    <li><a href="#ref-for-user-agent④⑦">5.2. Delegation</a>
-    <li><a href="#ref-for-user-agent④⑧">5.3. Fingerprinting</a> <a href="#ref-for-user-agent④⑨">(2)</a> <a href="#ref-for-user-agent⑤⓪">(3)</a> <a href="#ref-for-user-agent⑤①">(4)</a>
-    <li><a href="#ref-for-user-agent⑤②">5.4. Access Restrictions</a> <a href="#ref-for-user-agent⑤③">(2)</a>
-    <li><a href="#ref-for-user-agent⑤④">6.1. The 'User-Agent' Header</a> <a href="#ref-for-user-agent⑤⑤">(2)</a>
-    <li><a href="#ref-for-user-agent⑤⑥">6.2. GREASE-like UA Brand Lists</a> <a href="#ref-for-user-agent⑤⑦">(2)</a> <a href="#ref-for-user-agent⑤⑧">(3)</a> <a href="#ref-for-user-agent⑤⑨">(4)</a> <a href="#ref-for-user-agent⑥⓪">(5)</a> <a href="#ref-for-user-agent⑥①">(6)</a>
-   </ul>
-  </aside>
-  <aside aria-labelledby="infopaneltitle-for-5bb426afb0158d16c2665b4c871137e8" class="dfn-panel" data-for="5bb426afb0158d16c2665b4c871137e8" id="infopanel-for-5bb426afb0158d16c2665b4c871137e8" role="menu">
+    <li><a href="#ref-for-user-agent②④">3.4. The 'Sec-CH-UA-Form-Factor' Header Field</a>
+    <li><a href="#ref-for-user-agent②⑤">3.7. The 'Sec-CH-UA-Mobile' Header Field</a>
+    <li><a href="#ref-for-user-agent②⑥">3.8. The 'Sec-CH-UA-Model' Header Field</a>
+    <li><a href="#ref-for-user-agent②⑦">3.9. The 'Sec-CH-UA-Platform' Header Field</a>
+    <li><a href="#ref-for-user-agent②⑧">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-user-agent②⑨">3.11. The 'Sec-CH-UA-WoW64' Header Field</a>
+    <li><a href="#ref-for-user-agent③⓪">4. Interface</a>
+    <li><a href="#ref-for-user-agent③①">4.1.1. WindowOrWorkerGlobalScope</a> <a href="#ref-for-user-agent③②">(2)</a>
+    <li><a href="#ref-for-user-agent③③">4.1.2. Create brands</a> <a href="#ref-for-user-agent③④">(2)</a> <a href="#ref-for-user-agent③⑤">(3)</a>
+    <li><a href="#ref-for-user-agent③⑥">4.1.3. Create arbitrary brand and version values</a>
+    <li><a href="#ref-for-user-agent③⑦">4.1.5. Getters</a> <a href="#ref-for-user-agent③⑧">(2)</a>
+    <li><a href="#ref-for-user-agent③⑨">4.1.6. getHighEntropyValues method</a> <a href="#ref-for-user-agent④⓪">(2)</a> <a href="#ref-for-user-agent④①">(3)</a> <a href="#ref-for-user-agent④②">(4)</a> <a href="#ref-for-user-agent④③">(5)</a> <a href="#ref-for-user-agent④④">(6)</a> <a href="#ref-for-user-agent④⑤">(7)</a>
+    <li><a href="#ref-for-user-agent④⑥">4.1.7. toJSON method</a> <a href="#ref-for-user-agent④⑦">(2)</a>
+    <li><a href="#ref-for-user-agent④⑧">5.1. Secure Transport</a>
+    <li><a href="#ref-for-user-agent④⑨">5.2. Delegation</a>
+    <li><a href="#ref-for-user-agent⑤⓪">5.3. Fingerprinting</a> <a href="#ref-for-user-agent⑤①">(2)</a> <a href="#ref-for-user-agent⑤②">(3)</a> <a href="#ref-for-user-agent⑤③">(4)</a>
+    <li><a href="#ref-for-user-agent⑤④">5.4. Access Restrictions</a> <a href="#ref-for-user-agent⑤⑤">(2)</a>
+    <li><a href="#ref-for-user-agent⑤⑥">6.1. The 'User-Agent' Header</a> <a href="#ref-for-user-agent⑤⑦">(2)</a>
+    <li><a href="#ref-for-user-agent⑤⑧">6.2. GREASE-like UA Brand Lists</a> <a href="#ref-for-user-agent⑤⑨">(2)</a> <a href="#ref-for-user-agent⑥⓪">(3)</a> <a href="#ref-for-user-agent⑥①">(4)</a> <a href="#ref-for-user-agent⑥②">(5)</a> <a href="#ref-for-user-agent⑥③">(6)</a>
+   </ul>
+  </aside>
+  <aside aria-labelledby="infopaneltitle-for-5bb426afb0158d16c2665b4c871137e8" class="dfn-panel" data-for="5bb426afb0158d16c2665b4c871137e8" id="infopanel-for-5bb426afb0158d16c2665b4c871137e8">
    <span id="infopaneltitle-for-5bb426afb0158d16c2665b4c871137e8" style="display:none">Info about the 'boolean' external reference.</span><a href="https://tools.ietf.org/html/rfc8941#section-3.3.6">https://tools.ietf.org/html/rfc8941#section-3.3.6</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-section-3.3.6">3.6. The 'Sec-CH-UA-Mobile' Header Field</a>
-    <li><a href="#ref-for-section-3.3.6①">3.10. The 'Sec-CH-UA-WoW64' Header Field</a>
+    <li><a href="#ref-for-section-3.3.6">3.7. The 'Sec-CH-UA-Mobile' Header Field</a>
+    <li><a href="#ref-for-section-3.3.6①">3.11. The 'Sec-CH-UA-WoW64' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-6274216a854620c22387e26067966b4e" class="dfn-panel" data-for="6274216a854620c22387e26067966b4e" id="infopanel-for-6274216a854620c22387e26067966b4e" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-6274216a854620c22387e26067966b4e" class="dfn-panel" data-for="6274216a854620c22387e26067966b4e" id="infopanel-for-6274216a854620c22387e26067966b4e">
    <span id="infopaneltitle-for-6274216a854620c22387e26067966b4e" style="display:none">Info about the 'list' external reference.</span><a href="https://tools.ietf.org/html/rfc8941#section-3.1">https://tools.ietf.org/html/rfc8941#section-3.1</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-section-3.1">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-section-3.1①">3.5. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
+    <li><a href="#ref-for-section-3.1①">3.6. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-ac7a70e01f20468344f56a6bf551ceb9" class="dfn-panel" data-for="ac7a70e01f20468344f56a6bf551ceb9" id="infopanel-for-ac7a70e01f20468344f56a6bf551ceb9" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-ac7a70e01f20468344f56a6bf551ceb9" class="dfn-panel" data-for="ac7a70e01f20468344f56a6bf551ceb9" id="infopanel-for-ac7a70e01f20468344f56a6bf551ceb9">
    <span id="infopaneltitle-for-ac7a70e01f20468344f56a6bf551ceb9" style="display:none">Info about the 'serializing a list' external reference.</span><a href="https://tools.ietf.org/html/rfc8941#section-4.1.1">https://tools.ietf.org/html/rfc8941#section-4.1.1</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-section-4.1.1">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-section-4.1.1①">3.5. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
+    <li><a href="#ref-for-section-4.1.1①">3.6. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-74d52bb72ef9fb1bb5520406f010079c" class="dfn-panel" data-for="74d52bb72ef9fb1bb5520406f010079c" id="infopanel-for-74d52bb72ef9fb1bb5520406f010079c" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-74d52bb72ef9fb1bb5520406f010079c" class="dfn-panel" data-for="74d52bb72ef9fb1bb5520406f010079c" id="infopanel-for-74d52bb72ef9fb1bb5520406f010079c">
    <span id="infopaneltitle-for-74d52bb72ef9fb1bb5520406f010079c" style="display:none">Info about the 'string' external reference.</span><a href="https://tools.ietf.org/html/rfc8941#section-3.3.3">https://tools.ietf.org/html/rfc8941#section-3.3.3</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-section-3.3.3">3.1. The 'Sec-CH-UA' Header Field</a>
     <li><a href="#ref-for-section-3.3.3①">3.2. The 'Sec-CH-UA-Arch' Header Field</a>
     <li><a href="#ref-for-section-3.3.3②">3.3. The 'Sec-CH-UA-Bitness' Header Field</a>
-    <li><a href="#ref-for-section-3.3.3③">3.4. The 'Sec-CH-UA-Full-Version' Header Field</a>
-    <li><a href="#ref-for-section-3.3.3④">3.7. The 'Sec-CH-UA-Model' Header Field</a>
-    <li><a href="#ref-for-section-3.3.3⑤">3.8. The 'Sec-CH-UA-Platform' Header Field</a>
-    <li><a href="#ref-for-section-3.3.3⑥">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
-    <li><a href="#ref-for-section-3.3.3⑦">4.1.3. Create arbitrary brand and version values</a>
+    <li><a href="#ref-for-section-3.3.3③">3.4. The 'Sec-CH-UA-Form-Factor' Header Field</a>
+    <li><a href="#ref-for-section-3.3.3④">3.5. The 'Sec-CH-UA-Full-Version' Header Field</a>
+    <li><a href="#ref-for-section-3.3.3⑤">3.8. The 'Sec-CH-UA-Model' Header Field</a>
+    <li><a href="#ref-for-section-3.3.3⑥">3.9. The 'Sec-CH-UA-Platform' Header Field</a>
+    <li><a href="#ref-for-section-3.3.3⑦">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-section-3.3.3⑧">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-edc3e3324b8239e1191d55af2617bd31" class="dfn-panel" data-for="edc3e3324b8239e1191d55af2617bd31" id="infopanel-for-edc3e3324b8239e1191d55af2617bd31" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-edc3e3324b8239e1191d55af2617bd31" class="dfn-panel" data-for="edc3e3324b8239e1191d55af2617bd31" id="infopanel-for-edc3e3324b8239e1191d55af2617bd31">
    <span id="infopaneltitle-for-edc3e3324b8239e1191d55af2617bd31" style="display:none">Info about the 'structured header' external reference.</span><a href="https://tools.ietf.org/html/rfc8941#">https://tools.ietf.org/html/rfc8941#</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.1. The 'Sec-CH-UA' Header Field</a>
     <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.2. The 'Sec-CH-UA-Arch' Header Field</a>
     <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.3. The 'Sec-CH-UA-Bitness' Header Field</a>
-    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.4. The 'Sec-CH-UA-Full-Version' Header Field</a>
-    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.5. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
-    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.6. The 'Sec-CH-UA-Mobile' Header Field</a>
-    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.7. The 'Sec-CH-UA-Model' Header Field</a>
-    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.8. The 'Sec-CH-UA-Platform' Header Field</a>
-    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
-    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.10. The 'Sec-CH-UA-WoW64' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.4. The 'Sec-CH-UA-Form-Factor' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.5. The 'Sec-CH-UA-Full-Version' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.6. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.7. The 'Sec-CH-UA-Mobile' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.8. The 'Sec-CH-UA-Model' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.9. The 'Sec-CH-UA-Platform' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">3.11. The 'Sec-CH-UA-WoW64' Header Field</a>
     <li><a href="#ref-for-edc3e3324b8239e1191d55af2617bd31">4.1.3. Create arbitrary brand and version values</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-d0f238a61de9310f1738a214749fab18" class="dfn-panel" data-for="d0f238a61de9310f1738a214749fab18" id="infopanel-for-d0f238a61de9310f1738a214749fab18" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-d0f238a61de9310f1738a214749fab18" class="dfn-panel" data-for="d0f238a61de9310f1738a214749fab18" id="infopanel-for-d0f238a61de9310f1738a214749fab18">
    <span id="infopaneltitle-for-d0f238a61de9310f1738a214749fab18" style="display:none">Info about the 'DOMString' external reference.</span><a href="https://webidl.spec.whatwg.org/#idl-DOMString">https://webidl.spec.whatwg.org/#idl-DOMString</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-idl-DOMString">4. Interface</a> <a href="#ref-for-idl-DOMString①">(2)</a> <a href="#ref-for-idl-DOMString②">(3)</a> <a href="#ref-for-idl-DOMString③">(4)</a> <a href="#ref-for-idl-DOMString④">(5)</a> <a href="#ref-for-idl-DOMString⑤">(6)</a> <a href="#ref-for-idl-DOMString⑥">(7)</a> <a href="#ref-for-idl-DOMString⑦">(8)</a> <a href="#ref-for-idl-DOMString⑧">(9)</a> <a href="#ref-for-idl-DOMString⑨">(10)</a> <a href="#ref-for-idl-DOMString①⓪">(11)</a>
+    <li><a href="#ref-for-idl-DOMString">4. Interface</a> <a href="#ref-for-idl-DOMString①">(2)</a> <a href="#ref-for-idl-DOMString②">(3)</a> <a href="#ref-for-idl-DOMString③">(4)</a> <a href="#ref-for-idl-DOMString④">(5)</a> <a href="#ref-for-idl-DOMString⑤">(6)</a> <a href="#ref-for-idl-DOMString⑥">(7)</a> <a href="#ref-for-idl-DOMString⑦">(8)</a> <a href="#ref-for-idl-DOMString⑧">(9)</a> <a href="#ref-for-idl-DOMString⑨">(10)</a> <a href="#ref-for-idl-DOMString①⓪">(11)</a> <a href="#ref-for-idl-DOMString①①">(12)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dde049eb112f043fc45407ec0d4cb457" class="dfn-panel" data-for="dde049eb112f043fc45407ec0d4cb457" id="infopanel-for-dde049eb112f043fc45407ec0d4cb457" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-dde049eb112f043fc45407ec0d4cb457" class="dfn-panel" data-for="dde049eb112f043fc45407ec0d4cb457" id="infopanel-for-dde049eb112f043fc45407ec0d4cb457">
    <span id="infopaneltitle-for-dde049eb112f043fc45407ec0d4cb457" style="display:none">Info about the 'Exposed' external reference.</span><a href="https://webidl.spec.whatwg.org/#Exposed">https://webidl.spec.whatwg.org/#Exposed</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-Exposed">4. Interface</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-30e8367dc9a547b9096d98ba691987d9" class="dfn-panel" data-for="30e8367dc9a547b9096d98ba691987d9" id="infopanel-for-30e8367dc9a547b9096d98ba691987d9" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-30e8367dc9a547b9096d98ba691987d9" class="dfn-panel" data-for="30e8367dc9a547b9096d98ba691987d9" id="infopanel-for-30e8367dc9a547b9096d98ba691987d9">
    <span id="infopaneltitle-for-30e8367dc9a547b9096d98ba691987d9" style="display:none">Info about the 'FrozenArray' external reference.</span><a href="https://webidl.spec.whatwg.org/#idl-frozen-array">https://webidl.spec.whatwg.org/#idl-frozen-array</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-idl-frozen-array">4. Interface</a>
     <li><a href="#ref-for-idl-frozen-array①">4.1.1. WindowOrWorkerGlobalScope</a> <a href="#ref-for-idl-frozen-array②">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-aa43258e2b51dc6ebe6268a36e6fd733" class="dfn-panel" data-for="aa43258e2b51dc6ebe6268a36e6fd733" id="infopanel-for-aa43258e2b51dc6ebe6268a36e6fd733" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-aa43258e2b51dc6ebe6268a36e6fd733" class="dfn-panel" data-for="aa43258e2b51dc6ebe6268a36e6fd733" id="infopanel-for-aa43258e2b51dc6ebe6268a36e6fd733">
    <span id="infopaneltitle-for-aa43258e2b51dc6ebe6268a36e6fd733" style="display:none">Info about the 'NotAllowedError' external reference.</span><a href="https://webidl.spec.whatwg.org/#notallowederror">https://webidl.spec.whatwg.org/#notallowederror</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-notallowederror">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-93669c631ec1ef8e696b4c083bdbe12c" class="dfn-panel" data-for="93669c631ec1ef8e696b4c083bdbe12c" id="infopanel-for-93669c631ec1ef8e696b4c083bdbe12c" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-93669c631ec1ef8e696b4c083bdbe12c" class="dfn-panel" data-for="93669c631ec1ef8e696b4c083bdbe12c" id="infopanel-for-93669c631ec1ef8e696b4c083bdbe12c">
    <span id="infopaneltitle-for-93669c631ec1ef8e696b4c083bdbe12c" style="display:none">Info about the 'Promise' external reference.</span><a href="https://webidl.spec.whatwg.org/#idl-promise">https://webidl.spec.whatwg.org/#idl-promise</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-idl-promise">4. Interface</a> <a href="#ref-for-idl-promise①">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-cdf224ec60dc3b08449a2fbdf3a90406" class="dfn-panel" data-for="cdf224ec60dc3b08449a2fbdf3a90406" id="infopanel-for-cdf224ec60dc3b08449a2fbdf3a90406" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-cdf224ec60dc3b08449a2fbdf3a90406" class="dfn-panel" data-for="cdf224ec60dc3b08449a2fbdf3a90406" id="infopanel-for-cdf224ec60dc3b08449a2fbdf3a90406">
    <span id="infopaneltitle-for-cdf224ec60dc3b08449a2fbdf3a90406" style="display:none">Info about the 'SecureContext' external reference.</span><a href="https://webidl.spec.whatwg.org/#SecureContext">https://webidl.spec.whatwg.org/#SecureContext</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-SecureContext">4. Interface</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-bbe33fc7ac016834e4aaddbfd1b084a1" class="dfn-panel" data-for="bbe33fc7ac016834e4aaddbfd1b084a1" id="infopanel-for-bbe33fc7ac016834e4aaddbfd1b084a1" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-bbe33fc7ac016834e4aaddbfd1b084a1" class="dfn-panel" data-for="bbe33fc7ac016834e4aaddbfd1b084a1" id="infopanel-for-bbe33fc7ac016834e4aaddbfd1b084a1">
    <span id="infopaneltitle-for-bbe33fc7ac016834e4aaddbfd1b084a1" style="display:none">Info about the 'a new promise' external reference.</span><a href="https://webidl.spec.whatwg.org/#a-new-promise">https://webidl.spec.whatwg.org/#a-new-promise</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-a-new-promise">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-f8062b07e25ed0281f5cbfb9a54070b4" class="dfn-panel" data-for="f8062b07e25ed0281f5cbfb9a54070b4" id="infopanel-for-f8062b07e25ed0281f5cbfb9a54070b4" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-f8062b07e25ed0281f5cbfb9a54070b4" class="dfn-panel" data-for="f8062b07e25ed0281f5cbfb9a54070b4" id="infopanel-for-f8062b07e25ed0281f5cbfb9a54070b4">
    <span id="infopaneltitle-for-f8062b07e25ed0281f5cbfb9a54070b4" style="display:none">Info about the 'boolean' external reference.</span><a href="https://webidl.spec.whatwg.org/#idl-boolean">https://webidl.spec.whatwg.org/#idl-boolean</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-idl-boolean">4. Interface</a> <a href="#ref-for-idl-boolean①">(2)</a> <a href="#ref-for-idl-boolean②">(3)</a> <a href="#ref-for-idl-boolean③">(4)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-0a99406bd73373ee3ccdafd36af2e87b" class="dfn-panel" data-for="0a99406bd73373ee3ccdafd36af2e87b" id="infopanel-for-0a99406bd73373ee3ccdafd36af2e87b" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-0a99406bd73373ee3ccdafd36af2e87b" class="dfn-panel" data-for="0a99406bd73373ee3ccdafd36af2e87b" id="infopanel-for-0a99406bd73373ee3ccdafd36af2e87b">
    <span id="infopaneltitle-for-0a99406bd73373ee3ccdafd36af2e87b" style="display:none">Info about the 'create a frozen array' external reference.</span><a href="https://webidl.spec.whatwg.org/#dfn-create-frozen-array">https://webidl.spec.whatwg.org/#dfn-create-frozen-array</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-create-frozen-array">4.1.1. WindowOrWorkerGlobalScope</a> <a href="#ref-for-dfn-create-frozen-array①">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-e111d752819bc457f7b554b621087a4a" class="dfn-panel" data-for="e111d752819bc457f7b554b621087a4a" id="infopanel-for-e111d752819bc457f7b554b621087a4a" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-e111d752819bc457f7b554b621087a4a" class="dfn-panel" data-for="e111d752819bc457f7b554b621087a4a" id="infopanel-for-e111d752819bc457f7b554b621087a4a">
    <span id="infopaneltitle-for-e111d752819bc457f7b554b621087a4a" style="display:none">Info about the 'dictionary' external reference.</span><a href="https://webidl.spec.whatwg.org/#dfn-dictionary">https://webidl.spec.whatwg.org/#dfn-dictionary</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-dictionary">4.1.4. Create a brand-version list</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-f7204c0306e7ffcb24c31adf6e629e1d" class="dfn-panel" data-for="f7204c0306e7ffcb24c31adf6e629e1d" id="infopanel-for-f7204c0306e7ffcb24c31adf6e629e1d" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-f7204c0306e7ffcb24c31adf6e629e1d" class="dfn-panel" data-for="f7204c0306e7ffcb24c31adf6e629e1d" id="infopanel-for-f7204c0306e7ffcb24c31adf6e629e1d">
    <span id="infopaneltitle-for-f7204c0306e7ffcb24c31adf6e629e1d" style="display:none">Info about the 'reject' external reference.</span><a href="https://webidl.spec.whatwg.org/#reject">https://webidl.spec.whatwg.org/#reject</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-reject">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-f4f973f92274819781816b033aea1f11" class="dfn-panel" data-for="f4f973f92274819781816b033aea1f11" id="infopanel-for-f4f973f92274819781816b033aea1f11" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-f4f973f92274819781816b033aea1f11" class="dfn-panel" data-for="f4f973f92274819781816b033aea1f11" id="infopanel-for-f4f973f92274819781816b033aea1f11">
    <span id="infopaneltitle-for-f4f973f92274819781816b033aea1f11" style="display:none">Info about the 'resolve' external reference.</span><a href="https://webidl.spec.whatwg.org/#resolve">https://webidl.spec.whatwg.org/#resolve</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-resolve">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-38ab7db52e46bed36993204c29f67202" class="dfn-panel" data-for="38ab7db52e46bed36993204c29f67202" id="infopanel-for-38ab7db52e46bed36993204c29f67202" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-38ab7db52e46bed36993204c29f67202" class="dfn-panel" data-for="38ab7db52e46bed36993204c29f67202" id="infopanel-for-38ab7db52e46bed36993204c29f67202">
    <span id="infopaneltitle-for-38ab7db52e46bed36993204c29f67202" style="display:none">Info about the 'sequence' external reference.</span><a href="https://webidl.spec.whatwg.org/#idl-sequence">https://webidl.spec.whatwg.org/#idl-sequence</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-idl-sequence">4. Interface</a> <a href="#ref-for-idl-sequence①">(2)</a> <a href="#ref-for-idl-sequence②">(3)</a> <a href="#ref-for-idl-sequence③">(4)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-be0933df03cd63338f98de217c4158c7" class="dfn-panel" data-for="be0933df03cd63338f98de217c4158c7" id="infopanel-for-be0933df03cd63338f98de217c4158c7" role="menu">
+  <aside aria-labelledby="infopaneltitle-for-be0933df03cd63338f98de217c4158c7" class="dfn-panel" data-for="be0933df03cd63338f98de217c4158c7" id="infopanel-for-be0933df03cd63338f98de217c4158c7">
    <span id="infopaneltitle-for-be0933df03cd63338f98de217c4158c7" style="display:none">Info about the 'this' external reference.</span><a href="https://webidl.spec.whatwg.org/#this">https://webidl.spec.whatwg.org/#this</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-this">4.1.5. Getters</a>
@@ -2206,6 +2243,11 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="1f9c7a637d2441cd6f3af324d00e6a87">low entropy hint table</span>
      <li><span class="dfn-paneled" id="cc29bfc56397134563b20d679eafd421">policy-controlled client hints features</span>
     </ul>
+   <li>
+    <a data-link-type="biblio">[COMPAT]</a> defines the following terms:
+    <ul>
+     <li><span class="dfn-paneled" id="8184daca5125998da6a4187ca2a1b4d2">devicecompat</span>
+    </ul>
    <li>
     <a data-link-type="biblio">[HTML]</a> defines the following terms:
     <ul>
@@ -2271,6 +2313,8 @@ <h3 class="no-num no-ref heading settled" id="normative"><span class="content">N
   <dl>
    <dt id="biblio-client-hints-infrastructure">[CLIENT-HINTS-INFRASTRUCTURE]
    <dd><a href="https://wicg.github.io/client-hints-infrastructure/"><cite>Client Hints Infrastructure</cite></a>. cg-draft. URL: <a href="https://wicg.github.io/client-hints-infrastructure/">https://wicg.github.io/client-hints-infrastructure/</a>
+   <dt id="biblio-compat">[COMPAT]
+   <dd>Mike Taylor. <a href="https://compat.spec.whatwg.org/"><cite>Compatibility Standard</cite></a>. Living Standard. URL: <a href="https://compat.spec.whatwg.org/">https://compat.spec.whatwg.org/</a>
    <dt id="biblio-html">[HTML]
    <dd>Anne van Kesteren; et al. <a href="https://html.spec.whatwg.org/multipage/"><cite>HTML Standard</cite></a>. Living Standard. URL: <a href="https://html.spec.whatwg.org/multipage/">https://html.spec.whatwg.org/multipage/</a>
    <dt id="biblio-infra">[INFRA]
@@ -2308,16 +2352,17 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-uadatavalues"><code><c- g>UADataValues</c-></code></a> {
-  <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion"><c- n>NavigatorUABrandVersion</c-></a>> <a data-type="sequence<NavigatorUABrandVersion> " href="#dom-uadatavalues-brands"><code><c- g>brands</c-></code></a>;
-  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-type="boolean " href="#dom-uadatavalues-mobile"><code><c- g>mobile</c-></code></a>;
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a data-type="DOMString " href="#dom-uadatavalues-architecture"><code><c- g>architecture</c-></code></a>;
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a data-type="DOMString " href="#dom-uadatavalues-bitness"><code><c- g>bitness</c-></code></a>;
+  <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion"><c- n>NavigatorUABrandVersion</c-></a>> <a data-type="sequence<NavigatorUABrandVersion> " href="#dom-uadatavalues-brands"><code><c- g>brands</c-></code></a>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a data-type="DOMString " href="#dom-uadatavalues-formfactor"><code><c- g>formFactor</c-></code></a>;
+  <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion"><c- n>NavigatorUABrandVersion</c-></a>> <a data-type="sequence<NavigatorUABrandVersion> " href="#dom-uadatavalues-fullversionlist"><code><c- g>fullVersionList</c-></code></a>;
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a data-type="DOMString " href="#dom-uadatavalues-model"><code><c- g>model</c-></code></a>;
+  <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-type="boolean " href="#dom-uadatavalues-mobile"><code><c- g>mobile</c-></code></a>;
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a data-type="DOMString " href="#dom-uadatavalues-platform"><code><c- g>platform</c-></code></a>;
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a data-type="DOMString " href="#dom-uadatavalues-platformversion"><code><c- g>platformVersion</c-></code></a>;
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-DOMString"><c- b>DOMString</c-></a> <a data-type="DOMString " href="#dom-uadatavalues-uafullversion"><code><c- g>uaFullVersion</c-></code></a>; // deprecated in favor of fullVersionList
   <a class="idl-code" data-link-type="interface" href="https://webidl.spec.whatwg.org/#idl-boolean"><c- b>boolean</c-></a> <a data-type="boolean " href="#dom-uadatavalues-wow64"><code><c- g>wow64</c-></code></a>;
-  <a data-link-type="dfn" href="https://webidl.spec.whatwg.org/#idl-sequence"><c- b>sequence</c-></a>&lt;<a data-link-type="idl-name" href="#dictdef-navigatoruabrandversion"><c- n>NavigatorUABrandVersion</c-></a>> <a data-type="sequence<NavigatorUABrandVersion> " href="#dom-uadatavalues-fullversionlist"><code><c- g>fullVersionList</c-></code></a>;
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-ualowentropyjson"><code><c- g>UALowEntropyJSON</c-></code></a> {
@@ -2348,52 +2393,65 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
   <div style="counter-reset:issue">
    <div class="issue"> We can improve upon when and why a UA decides to refuse a hint once <a href="https://github.com/WICG/ua-client-hints/issues/151">Issue #151</a> is resolved. <a class="issue-return" href="#issue-22962aa8" title="Jump to section">↵</a></div>
   </div>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-brand" class="dfn-panel" data-for="user-agent-brand" id="infopanel-for-user-agent-brand" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-brand" class="dfn-panel" data-for="user-agent-brand" id="infopanel-for-user-agent-brand">
    <span id="infopaneltitle-for-user-agent-brand" style="display:none">Info about the 'brand' definition.</span><b><a href="#user-agent-brand">#user-agent-brand</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent-brand">3.1. The 'Sec-CH-UA' Header Field</a>
     <li><a href="#ref-for-user-agent-brand①">4.1.2. Create brands</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-significant-version" class="dfn-panel" data-for="user-agent-significant-version" id="infopanel-for-user-agent-significant-version" role="dialog">
-   <span id="infopaneltitle-for-user-agent-significant-version" style="display:none">Info about the 'significant version' definition.</span><b><a href="#user-agent-significant-version">#user-agent-significant-version</a></b><b>Referenced in:</b>
+  <aside aria-labelledby="infopaneltitle-for-user-agent-form-factor" class="dfn-panel" data-for="user-agent-form-factor" id="infopanel-for-user-agent-form-factor">
+   <span id="infopaneltitle-for-user-agent-form-factor" style="display:none">Info about the 'form-factor' definition.</span><b><a href="#user-agent-form-factor">#user-agent-form-factor</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-user-agent-significant-version">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-user-agent-significant-version①">4.1.1. WindowOrWorkerGlobalScope</a>
-    <li><a href="#ref-for-user-agent-significant-version②">4.1.2. Create brands</a>
-    <li><a href="#ref-for-user-agent-significant-version③">4.1.3. Create arbitrary brand and version values</a>
-    <li><a href="#ref-for-user-agent-significant-version④">4.1.4. Create a brand-version list</a>
+    <li><a href="#ref-for-user-agent-form-factor">3.4. The 'Sec-CH-UA-Form-Factor' Header Field</a>
+    <li><a href="#ref-for-user-agent-form-factor①">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-full-version" class="dfn-panel" data-for="user-agent-full-version" id="infopanel-for-user-agent-full-version" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-full-version" class="dfn-panel" data-for="user-agent-full-version" id="infopanel-for-user-agent-full-version">
    <span id="infopaneltitle-for-user-agent-full-version" style="display:none">Info about the 'full version' definition.</span><b><a href="#user-agent-full-version">#user-agent-full-version</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent-full-version">3. User Agent Hints</a>
     <li><a href="#ref-for-user-agent-full-version①">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-user-agent-full-version②">3.4. The 'Sec-CH-UA-Full-Version' Header Field</a>
-    <li><a href="#ref-for-user-agent-full-version③">3.5. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
+    <li><a href="#ref-for-user-agent-full-version②">3.5. The 'Sec-CH-UA-Full-Version' Header Field</a>
+    <li><a href="#ref-for-user-agent-full-version③">3.6. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
     <li><a href="#ref-for-user-agent-full-version④">4.1.1. WindowOrWorkerGlobalScope</a>
     <li><a href="#ref-for-user-agent-full-version⑤">4.1.2. Create brands</a>
     <li><a href="#ref-for-user-agent-full-version⑥">4.1.3. Create arbitrary brand and version values</a>
     <li><a href="#ref-for-user-agent-full-version⑦">4.1.4. Create a brand-version list</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-brand" class="dfn-panel" data-for="user-agent-platform-brand" id="infopanel-for-user-agent-platform-brand" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-model" class="dfn-panel" data-for="user-agent-model" id="infopanel-for-user-agent-model">
+   <span id="infopaneltitle-for-user-agent-model" style="display:none">Info about the 'model' definition.</span><b><a href="#user-agent-model">#user-agent-model</a></b><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-user-agent-model">3. User Agent Hints</a> <a href="#ref-for-user-agent-model①">(2)</a> <a href="#ref-for-user-agent-model②">(3)</a>
+    <li><a href="#ref-for-user-agent-model③">4.1.6. getHighEntropyValues method</a>
+   </ul>
+  </aside>
+  <aside aria-labelledby="infopaneltitle-for-user-agent-mobileness" class="dfn-panel" data-for="user-agent-mobileness" id="infopanel-for-user-agent-mobileness">
+   <span id="infopaneltitle-for-user-agent-mobileness" style="display:none">Info about the 'mobileness' definition.</span><b><a href="#user-agent-mobileness">#user-agent-mobileness</a></b><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-user-agent-mobileness">3. User Agent Hints</a> <a href="#ref-for-user-agent-mobileness①">(2)</a>
+    <li><a href="#ref-for-user-agent-mobileness②">4.1.5. Getters</a>
+    <li><a href="#ref-for-user-agent-mobileness③">4.1.6. getHighEntropyValues method</a>
+    <li><a href="#ref-for-user-agent-mobileness④">4.1.7. toJSON method</a>
+   </ul>
+  </aside>
+  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-brand" class="dfn-panel" data-for="user-agent-platform-brand" id="infopanel-for-user-agent-platform-brand">
    <span id="infopaneltitle-for-user-agent-platform-brand" style="display:none">Info about the 'platform brand' definition.</span><b><a href="#user-agent-platform-brand">#user-agent-platform-brand</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-user-agent-platform-brand">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-user-agent-platform-brand">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
     <li><a href="#ref-for-user-agent-platform-brand①">4.1.5. Getters</a>
     <li><a href="#ref-for-user-agent-platform-brand②">4.1.6. getHighEntropyValues method</a> <a href="#ref-for-user-agent-platform-brand③">(2)</a>
     <li><a href="#ref-for-user-agent-platform-brand④">4.1.7. toJSON method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-version" class="dfn-panel" data-for="user-agent-platform-version" id="infopanel-for-user-agent-platform-version" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-version" class="dfn-panel" data-for="user-agent-platform-version" id="infopanel-for-user-agent-platform-version">
    <span id="infopaneltitle-for-user-agent-platform-version" style="display:none">Info about the 'platform version' definition.</span><b><a href="#user-agent-platform-version">#user-agent-platform-version</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-user-agent-platform-version">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-user-agent-platform-version">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-architecture" class="dfn-panel" data-for="user-agent-platform-architecture" id="infopanel-for-user-agent-platform-architecture" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-architecture" class="dfn-panel" data-for="user-agent-platform-architecture" id="infopanel-for-user-agent-platform-architecture">
    <span id="infopaneltitle-for-user-agent-platform-architecture" style="display:none">Info about the 'platform architecture' definition.</span><b><a href="#user-agent-platform-architecture">#user-agent-platform-architecture</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent-platform-architecture">3. User Agent Hints</a> <a href="#ref-for-user-agent-platform-architecture①">(2)</a> <a href="#ref-for-user-agent-platform-architecture②">(3)</a>
@@ -2401,69 +2459,64 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-user-agent-platform-architecture④">5.4. Access Restrictions</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-bitness" class="dfn-panel" data-for="user-agent-platform-bitness" id="infopanel-for-user-agent-platform-bitness" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-platform-bitness" class="dfn-panel" data-for="user-agent-platform-bitness" id="infopanel-for-user-agent-platform-bitness">
    <span id="infopaneltitle-for-user-agent-platform-bitness" style="display:none">Info about the 'platform bitness' definition.</span><b><a href="#user-agent-platform-bitness">#user-agent-platform-bitness</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent-platform-bitness">3. User Agent Hints</a> <a href="#ref-for-user-agent-platform-bitness①">(2)</a>
-    <li><a href="#ref-for-user-agent-platform-bitness②">4.1.6. getHighEntropyValues method</a>
-    <li><a href="#ref-for-user-agent-platform-bitness③">5.4. Access Restrictions</a>
+    <li><a href="#ref-for-user-agent-platform-bitness②">3.3. The 'Sec-CH-UA-Bitness' Header Field</a>
+    <li><a href="#ref-for-user-agent-platform-bitness③">4.1.6. getHighEntropyValues method</a>
+    <li><a href="#ref-for-user-agent-platform-bitness④">5.4. Access Restrictions</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-model" class="dfn-panel" data-for="user-agent-model" id="infopanel-for-user-agent-model" role="dialog">
-   <span id="infopaneltitle-for-user-agent-model" style="display:none">Info about the 'model' definition.</span><b><a href="#user-agent-model">#user-agent-model</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-user-agent-model">3. User Agent Hints</a> <a href="#ref-for-user-agent-model①">(2)</a> <a href="#ref-for-user-agent-model②">(3)</a>
-    <li><a href="#ref-for-user-agent-model③">4.1.6. getHighEntropyValues method</a>
-   </ul>
-  </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-mobileness" class="dfn-panel" data-for="user-agent-mobileness" id="infopanel-for-user-agent-mobileness" role="dialog">
-   <span id="infopaneltitle-for-user-agent-mobileness" style="display:none">Info about the 'mobileness' definition.</span><b><a href="#user-agent-mobileness">#user-agent-mobileness</a></b><b>Referenced in:</b>
+  <aside aria-labelledby="infopaneltitle-for-user-agent-significant-version" class="dfn-panel" data-for="user-agent-significant-version" id="infopanel-for-user-agent-significant-version">
+   <span id="infopaneltitle-for-user-agent-significant-version" style="display:none">Info about the 'significant version' definition.</span><b><a href="#user-agent-significant-version">#user-agent-significant-version</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-user-agent-mobileness">3. User Agent Hints</a> <a href="#ref-for-user-agent-mobileness①">(2)</a>
-    <li><a href="#ref-for-user-agent-mobileness②">4.1.5. Getters</a>
-    <li><a href="#ref-for-user-agent-mobileness③">4.1.6. getHighEntropyValues method</a>
-    <li><a href="#ref-for-user-agent-mobileness④">4.1.7. toJSON method</a>
+    <li><a href="#ref-for-user-agent-significant-version">3.1. The 'Sec-CH-UA' Header Field</a>
+    <li><a href="#ref-for-user-agent-significant-version①">4.1.1. WindowOrWorkerGlobalScope</a>
+    <li><a href="#ref-for-user-agent-significant-version②">4.1.2. Create brands</a>
+    <li><a href="#ref-for-user-agent-significant-version③">4.1.3. Create arbitrary brand and version values</a>
+    <li><a href="#ref-for-user-agent-significant-version④">4.1.4. Create a brand-version list</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-wow64-ness" class="dfn-panel" data-for="user-agent-wow64-ness" id="infopanel-for-user-agent-wow64-ness" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-wow64-ness" class="dfn-panel" data-for="user-agent-wow64-ness" id="infopanel-for-user-agent-wow64-ness">
    <span id="infopaneltitle-for-user-agent-wow64-ness" style="display:none">Info about the 'wow64-ness' definition.</span><b><a href="#user-agent-wow64-ness">#user-agent-wow64-ness</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent-wow64-ness">3. User Agent Hints</a>
     <li><a href="#ref-for-user-agent-wow64-ness①">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-http-headerdef-sec-ch-ua" class="dfn-panel" data-for="http-headerdef-sec-ch-ua" id="infopanel-for-http-headerdef-sec-ch-ua" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-http-headerdef-sec-ch-ua" class="dfn-panel" data-for="http-headerdef-sec-ch-ua" id="infopanel-for-http-headerdef-sec-ch-ua">
    <span id="infopaneltitle-for-http-headerdef-sec-ch-ua" style="display:none">Info about the 'Sec-CH-UA' definition.</span><b><a href="#http-headerdef-sec-ch-ua">#http-headerdef-sec-ch-ua</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-http-headerdef-sec-ch-ua">3.1. The 'Sec-CH-UA' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-http-headerdef-sec-ch-ua-full-version-list" class="dfn-panel" data-for="http-headerdef-sec-ch-ua-full-version-list" id="infopanel-for-http-headerdef-sec-ch-ua-full-version-list" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-http-headerdef-sec-ch-ua-full-version-list" class="dfn-panel" data-for="http-headerdef-sec-ch-ua-full-version-list" id="infopanel-for-http-headerdef-sec-ch-ua-full-version-list">
    <span id="infopaneltitle-for-http-headerdef-sec-ch-ua-full-version-list" style="display:none">Info about the 'Sec-CH-UA-Full-Version-List' definition.</span><b><a href="#http-headerdef-sec-ch-ua-full-version-list">#http-headerdef-sec-ch-ua-full-version-list</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-http-headerdef-sec-ch-ua-full-version-list">3.1. The 'Sec-CH-UA' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-get-the-platform-version" class="dfn-panel" data-for="get-the-platform-version" id="infopanel-for-get-the-platform-version" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-get-the-platform-version" class="dfn-panel" data-for="get-the-platform-version" id="infopanel-for-get-the-platform-version">
    <span id="infopaneltitle-for-get-the-platform-version" style="display:none">Info about the 'get the platform version' definition.</span><b><a href="#get-the-platform-version">#get-the-platform-version</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-get-the-platform-version">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-get-the-platform-version">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
     <li><a href="#ref-for-get-the-platform-version①">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-get-the-legacy-windows-version-number" class="dfn-panel" data-for="get-the-legacy-windows-version-number" id="infopanel-for-get-the-legacy-windows-version-number" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-get-the-legacy-windows-version-number" class="dfn-panel" data-for="get-the-legacy-windows-version-number" id="infopanel-for-get-the-legacy-windows-version-number">
    <span id="infopaneltitle-for-get-the-legacy-windows-version-number" style="display:none">Info about the 'get the legacy Windows version number' definition.</span><b><a href="#get-the-legacy-windows-version-number">#get-the-legacy-windows-version-number</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-get-the-legacy-windows-version-number">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a>
+    <li><a href="#ref-for-get-the-legacy-windows-version-number">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-create-a-unified-platform-version-string" class="dfn-panel" data-for="create-a-unified-platform-version-string" id="infopanel-for-create-a-unified-platform-version-string" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-create-a-unified-platform-version-string" class="dfn-panel" data-for="create-a-unified-platform-version-string" id="infopanel-for-create-a-unified-platform-version-string">
    <span id="infopaneltitle-for-create-a-unified-platform-version-string" style="display:none">Info about the 'create a unified platform version string' definition.</span><b><a href="#create-a-unified-platform-version-string">#create-a-unified-platform-version-string</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-create-a-unified-platform-version-string">3.9. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-create-a-unified-platform-version-string①">(2)</a> <a href="#ref-for-create-a-unified-platform-version-string②">(3)</a>
+    <li><a href="#ref-for-create-a-unified-platform-version-string">3.10. The 'Sec-CH-UA-Platform-Version' Header Field</a> <a href="#ref-for-create-a-unified-platform-version-string①">(2)</a> <a href="#ref-for-create-a-unified-platform-version-string②">(3)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dictdef-navigatoruabrandversion" class="dfn-panel" data-for="dictdef-navigatoruabrandversion" id="infopanel-for-dictdef-navigatoruabrandversion" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dictdef-navigatoruabrandversion" class="dfn-panel" data-for="dictdef-navigatoruabrandversion" id="infopanel-for-dictdef-navigatoruabrandversion">
    <span id="infopaneltitle-for-dictdef-navigatoruabrandversion" style="display:none">Info about the 'NavigatorUABrandVersion' definition.</span><b><a href="#dictdef-navigatoruabrandversion">#dictdef-navigatoruabrandversion</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dictdef-navigatoruabrandversion">4. Interface</a> <a href="#ref-for-dictdef-navigatoruabrandversion①">(2)</a> <a href="#ref-for-dictdef-navigatoruabrandversion②">(3)</a> <a href="#ref-for-dictdef-navigatoruabrandversion③">(4)</a>
@@ -2471,152 +2524,158 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-dictdef-navigatoruabrandversion⑥">4.1.2. Create brands</a> <a href="#ref-for-dictdef-navigatoruabrandversion⑦">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruabrandversion-brand" class="dfn-panel" data-for="dom-navigatoruabrandversion-brand" id="infopanel-for-dom-navigatoruabrandversion-brand" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruabrandversion-brand" class="dfn-panel" data-for="dom-navigatoruabrandversion-brand" id="infopanel-for-dom-navigatoruabrandversion-brand">
    <span id="infopaneltitle-for-dom-navigatoruabrandversion-brand" style="display:none">Info about the 'brand' definition.</span><b><a href="#dom-navigatoruabrandversion-brand">#dom-navigatoruabrandversion-brand</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-navigatoruabrandversion-brand">4.1.2. Create brands</a> <a href="#ref-for-dom-navigatoruabrandversion-brand①">(2)</a>
     <li><a href="#ref-for-dom-navigatoruabrandversion-brand②">4.1.4. Create a brand-version list</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruabrandversion-version" class="dfn-panel" data-for="dom-navigatoruabrandversion-version" id="infopanel-for-dom-navigatoruabrandversion-version" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruabrandversion-version" class="dfn-panel" data-for="dom-navigatoruabrandversion-version" id="infopanel-for-dom-navigatoruabrandversion-version">
    <span id="infopaneltitle-for-dom-navigatoruabrandversion-version" style="display:none">Info about the 'version' definition.</span><b><a href="#dom-navigatoruabrandversion-version">#dom-navigatoruabrandversion-version</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-navigatoruabrandversion-version">4.1.2. Create brands</a> <a href="#ref-for-dom-navigatoruabrandversion-version①">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dictdef-uadatavalues" class="dfn-panel" data-for="dictdef-uadatavalues" id="infopanel-for-dictdef-uadatavalues" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dictdef-uadatavalues" class="dfn-panel" data-for="dictdef-uadatavalues" id="infopanel-for-dictdef-uadatavalues">
    <span id="infopaneltitle-for-dictdef-uadatavalues" style="display:none">Info about the 'UADataValues' definition.</span><b><a href="#dictdef-uadatavalues">#dictdef-uadatavalues</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dictdef-uadatavalues">4. Interface</a>
     <li><a href="#ref-for-dictdef-uadatavalues①">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-brands" class="dfn-panel" data-for="dom-uadatavalues-brands" id="infopanel-for-dom-uadatavalues-brands" role="dialog">
-   <span id="infopaneltitle-for-dom-uadatavalues-brands" style="display:none">Info about the 'brands' definition.</span><b><a href="#dom-uadatavalues-brands">#dom-uadatavalues-brands</a></b><b>Referenced in:</b>
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-architecture" class="dfn-panel" data-for="dom-uadatavalues-architecture" id="infopanel-for-dom-uadatavalues-architecture">
+   <span id="infopaneltitle-for-dom-uadatavalues-architecture" style="display:none">Info about the 'architecture' definition.</span><b><a href="#dom-uadatavalues-architecture">#dom-uadatavalues-architecture</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-uadatavalues-brands">4.1.6. getHighEntropyValues method</a>
+    <li><a href="#ref-for-dom-uadatavalues-architecture">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-mobile" class="dfn-panel" data-for="dom-uadatavalues-mobile" id="infopanel-for-dom-uadatavalues-mobile" role="dialog">
-   <span id="infopaneltitle-for-dom-uadatavalues-mobile" style="display:none">Info about the 'mobile' definition.</span><b><a href="#dom-uadatavalues-mobile">#dom-uadatavalues-mobile</a></b><b>Referenced in:</b>
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-bitness" class="dfn-panel" data-for="dom-uadatavalues-bitness" id="infopanel-for-dom-uadatavalues-bitness">
+   <span id="infopaneltitle-for-dom-uadatavalues-bitness" style="display:none">Info about the 'bitness' definition.</span><b><a href="#dom-uadatavalues-bitness">#dom-uadatavalues-bitness</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-uadatavalues-mobile">4.1.6. getHighEntropyValues method</a>
+    <li><a href="#ref-for-dom-uadatavalues-bitness">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-architecture" class="dfn-panel" data-for="dom-uadatavalues-architecture" id="infopanel-for-dom-uadatavalues-architecture" role="dialog">
-   <span id="infopaneltitle-for-dom-uadatavalues-architecture" style="display:none">Info about the 'architecture' definition.</span><b><a href="#dom-uadatavalues-architecture">#dom-uadatavalues-architecture</a></b><b>Referenced in:</b>
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-brands" class="dfn-panel" data-for="dom-uadatavalues-brands" id="infopanel-for-dom-uadatavalues-brands">
+   <span id="infopaneltitle-for-dom-uadatavalues-brands" style="display:none">Info about the 'brands' definition.</span><b><a href="#dom-uadatavalues-brands">#dom-uadatavalues-brands</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-uadatavalues-architecture">4.1.6. getHighEntropyValues method</a>
+    <li><a href="#ref-for-dom-uadatavalues-brands">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-bitness" class="dfn-panel" data-for="dom-uadatavalues-bitness" id="infopanel-for-dom-uadatavalues-bitness" role="dialog">
-   <span id="infopaneltitle-for-dom-uadatavalues-bitness" style="display:none">Info about the 'bitness' definition.</span><b><a href="#dom-uadatavalues-bitness">#dom-uadatavalues-bitness</a></b><b>Referenced in:</b>
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-formfactor" class="dfn-panel" data-for="dom-uadatavalues-formfactor" id="infopanel-for-dom-uadatavalues-formfactor">
+   <span id="infopaneltitle-for-dom-uadatavalues-formfactor" style="display:none">Info about the 'formFactor' definition.</span><b><a href="#dom-uadatavalues-formfactor">#dom-uadatavalues-formfactor</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-uadatavalues-bitness">4.1.6. getHighEntropyValues method</a>
+    <li><a href="#ref-for-dom-uadatavalues-formfactor">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-model" class="dfn-panel" data-for="dom-uadatavalues-model" id="infopanel-for-dom-uadatavalues-model" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-fullversionlist" class="dfn-panel" data-for="dom-uadatavalues-fullversionlist" id="infopanel-for-dom-uadatavalues-fullversionlist">
+   <span id="infopaneltitle-for-dom-uadatavalues-fullversionlist" style="display:none">Info about the 'fullVersionList' definition.</span><b><a href="#dom-uadatavalues-fullversionlist">#dom-uadatavalues-fullversionlist</a></b><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dom-uadatavalues-fullversionlist">4.1.6. getHighEntropyValues method</a>
+   </ul>
+  </aside>
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-model" class="dfn-panel" data-for="dom-uadatavalues-model" id="infopanel-for-dom-uadatavalues-model">
    <span id="infopaneltitle-for-dom-uadatavalues-model" style="display:none">Info about the 'model' definition.</span><b><a href="#dom-uadatavalues-model">#dom-uadatavalues-model</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-uadatavalues-model">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-platform" class="dfn-panel" data-for="dom-uadatavalues-platform" id="infopanel-for-dom-uadatavalues-platform" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-mobile" class="dfn-panel" data-for="dom-uadatavalues-mobile" id="infopanel-for-dom-uadatavalues-mobile">
+   <span id="infopaneltitle-for-dom-uadatavalues-mobile" style="display:none">Info about the 'mobile' definition.</span><b><a href="#dom-uadatavalues-mobile">#dom-uadatavalues-mobile</a></b><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dom-uadatavalues-mobile">4.1.6. getHighEntropyValues method</a>
+   </ul>
+  </aside>
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-platform" class="dfn-panel" data-for="dom-uadatavalues-platform" id="infopanel-for-dom-uadatavalues-platform">
    <span id="infopaneltitle-for-dom-uadatavalues-platform" style="display:none">Info about the 'platform' definition.</span><b><a href="#dom-uadatavalues-platform">#dom-uadatavalues-platform</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-uadatavalues-platform">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-platformversion" class="dfn-panel" data-for="dom-uadatavalues-platformversion" id="infopanel-for-dom-uadatavalues-platformversion" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-platformversion" class="dfn-panel" data-for="dom-uadatavalues-platformversion" id="infopanel-for-dom-uadatavalues-platformversion">
    <span id="infopaneltitle-for-dom-uadatavalues-platformversion" style="display:none">Info about the 'platformVersion' definition.</span><b><a href="#dom-uadatavalues-platformversion">#dom-uadatavalues-platformversion</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-uadatavalues-platformversion">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-uafullversion" class="dfn-panel" data-for="dom-uadatavalues-uafullversion" id="infopanel-for-dom-uadatavalues-uafullversion" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-uafullversion" class="dfn-panel" data-for="dom-uadatavalues-uafullversion" id="infopanel-for-dom-uadatavalues-uafullversion">
    <span id="infopaneltitle-for-dom-uadatavalues-uafullversion" style="display:none">Info about the 'uaFullVersion' definition.</span><b><a href="#dom-uadatavalues-uafullversion">#dom-uadatavalues-uafullversion</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-uadatavalues-uafullversion">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-wow64" class="dfn-panel" data-for="dom-uadatavalues-wow64" id="infopanel-for-dom-uadatavalues-wow64" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-wow64" class="dfn-panel" data-for="dom-uadatavalues-wow64" id="infopanel-for-dom-uadatavalues-wow64">
    <span id="infopaneltitle-for-dom-uadatavalues-wow64" style="display:none">Info about the 'wow64' definition.</span><b><a href="#dom-uadatavalues-wow64">#dom-uadatavalues-wow64</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-uadatavalues-wow64">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-uadatavalues-fullversionlist" class="dfn-panel" data-for="dom-uadatavalues-fullversionlist" id="infopanel-for-dom-uadatavalues-fullversionlist" role="dialog">
-   <span id="infopaneltitle-for-dom-uadatavalues-fullversionlist" style="display:none">Info about the 'fullVersionList' definition.</span><b><a href="#dom-uadatavalues-fullversionlist">#dom-uadatavalues-fullversionlist</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-dom-uadatavalues-fullversionlist">4.1.6. getHighEntropyValues method</a>
-   </ul>
-  </aside>
-  <aside aria-labelledby="infopaneltitle-for-dictdef-ualowentropyjson" class="dfn-panel" data-for="dictdef-ualowentropyjson" id="infopanel-for-dictdef-ualowentropyjson" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dictdef-ualowentropyjson" class="dfn-panel" data-for="dictdef-ualowentropyjson" id="infopanel-for-dictdef-ualowentropyjson">
    <span id="infopaneltitle-for-dictdef-ualowentropyjson" style="display:none">Info about the 'UALowEntropyJSON' definition.</span><b><a href="#dictdef-ualowentropyjson">#dictdef-ualowentropyjson</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dictdef-ualowentropyjson">4. Interface</a>
     <li><a href="#ref-for-dictdef-ualowentropyjson①">4.1.7. toJSON method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-ualowentropyjson-brands" class="dfn-panel" data-for="dom-ualowentropyjson-brands" id="infopanel-for-dom-ualowentropyjson-brands" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-ualowentropyjson-brands" class="dfn-panel" data-for="dom-ualowentropyjson-brands" id="infopanel-for-dom-ualowentropyjson-brands">
    <span id="infopaneltitle-for-dom-ualowentropyjson-brands" style="display:none">Info about the 'brands' definition.</span><b><a href="#dom-ualowentropyjson-brands">#dom-ualowentropyjson-brands</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-ualowentropyjson-brands">4.1.7. toJSON method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-ualowentropyjson-mobile" class="dfn-panel" data-for="dom-ualowentropyjson-mobile" id="infopanel-for-dom-ualowentropyjson-mobile" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-ualowentropyjson-mobile" class="dfn-panel" data-for="dom-ualowentropyjson-mobile" id="infopanel-for-dom-ualowentropyjson-mobile">
    <span id="infopaneltitle-for-dom-ualowentropyjson-mobile" style="display:none">Info about the 'mobile' definition.</span><b><a href="#dom-ualowentropyjson-mobile">#dom-ualowentropyjson-mobile</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-ualowentropyjson-mobile">4.1.7. toJSON method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-ualowentropyjson-platform" class="dfn-panel" data-for="dom-ualowentropyjson-platform" id="infopanel-for-dom-ualowentropyjson-platform" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-ualowentropyjson-platform" class="dfn-panel" data-for="dom-ualowentropyjson-platform" id="infopanel-for-dom-ualowentropyjson-platform">
    <span id="infopaneltitle-for-dom-ualowentropyjson-platform" style="display:none">Info about the 'platform' definition.</span><b><a href="#dom-ualowentropyjson-platform">#dom-ualowentropyjson-platform</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-ualowentropyjson-platform">4.1.7. toJSON method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-navigatoruadata" class="dfn-panel" data-for="navigatoruadata" id="infopanel-for-navigatoruadata" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-navigatoruadata" class="dfn-panel" data-for="navigatoruadata" id="infopanel-for-navigatoruadata">
    <span id="infopaneltitle-for-navigatoruadata" style="display:none">Info about the 'NavigatorUAData' definition.</span><b><a href="#navigatoruadata">#navigatoruadata</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-navigatoruadata">4. Interface</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruadata-brands" class="dfn-panel" data-for="dom-navigatoruadata-brands" id="infopanel-for-dom-navigatoruadata-brands" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruadata-brands" class="dfn-panel" data-for="dom-navigatoruadata-brands" id="infopanel-for-dom-navigatoruadata-brands">
    <span id="infopaneltitle-for-dom-navigatoruadata-brands" style="display:none">Info about the 'brands' definition.</span><b><a href="#dom-navigatoruadata-brands">#dom-navigatoruadata-brands</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-navigatoruadata-brands">4.1.5. Getters</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruadata-mobile" class="dfn-panel" data-for="dom-navigatoruadata-mobile" id="infopanel-for-dom-navigatoruadata-mobile" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruadata-mobile" class="dfn-panel" data-for="dom-navigatoruadata-mobile" id="infopanel-for-dom-navigatoruadata-mobile">
    <span id="infopaneltitle-for-dom-navigatoruadata-mobile" style="display:none">Info about the 'mobile' definition.</span><b><a href="#dom-navigatoruadata-mobile">#dom-navigatoruadata-mobile</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-navigatoruadata-mobile">4.1.5. Getters</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruadata-platform" class="dfn-panel" data-for="dom-navigatoruadata-platform" id="infopanel-for-dom-navigatoruadata-platform" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-dom-navigatoruadata-platform" class="dfn-panel" data-for="dom-navigatoruadata-platform" id="infopanel-for-dom-navigatoruadata-platform">
    <span id="infopaneltitle-for-dom-navigatoruadata-platform" style="display:none">Info about the 'platform' definition.</span><b><a href="#dom-navigatoruadata-platform">#dom-navigatoruadata-platform</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-navigatoruadata-platform">4.1.5. Getters</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-navigatorua" class="dfn-panel" data-for="navigatorua" id="infopanel-for-navigatorua" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-navigatorua" class="dfn-panel" data-for="navigatorua" id="infopanel-for-navigatorua">
    <span id="infopaneltitle-for-navigatorua" style="display:none">Info about the 'NavigatorUA' definition.</span><b><a href="#navigatorua">#navigatorua</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-navigatorua">4. Interface</a> <a href="#ref-for-navigatorua①">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-brands" class="dfn-panel" data-for="user-agent-brands" id="infopanel-for-user-agent-brands" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-brands" class="dfn-panel" data-for="user-agent-brands" id="infopanel-for-user-agent-brands">
    <span id="infopaneltitle-for-user-agent-brands" style="display:none">Info about the 'brands' definition.</span><b><a href="#user-agent-brands">#user-agent-brands</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent-brands">3. User Agent Hints</a> <a href="#ref-for-user-agent-brands①">(2)</a>
     <li><a href="#ref-for-user-agent-brands②">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-user-agent-brands③">3.5. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
+    <li><a href="#ref-for-user-agent-brands③">3.6. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
     <li><a href="#ref-for-user-agent-brands④">4.1.1. WindowOrWorkerGlobalScope</a>
     <li><a href="#ref-for-user-agent-brands⑤">6.2. GREASE-like UA Brand Lists</a> <a href="#ref-for-user-agent-brands⑥">(2)</a> <a href="#ref-for-user-agent-brands⑦">(3)</a> <a href="#ref-for-user-agent-brands⑧">(4)</a> <a href="#ref-for-user-agent-brands⑨">(5)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-windoworworkerglobalscope-brands-frozen-array" class="dfn-panel" data-for="windoworworkerglobalscope-brands-frozen-array" id="infopanel-for-windoworworkerglobalscope-brands-frozen-array" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-windoworworkerglobalscope-brands-frozen-array" class="dfn-panel" data-for="windoworworkerglobalscope-brands-frozen-array" id="infopanel-for-windoworworkerglobalscope-brands-frozen-array">
    <span id="infopaneltitle-for-windoworworkerglobalscope-brands-frozen-array" style="display:none">Info about the 'brands frozen array' definition.</span><b><a href="#windoworworkerglobalscope-brands-frozen-array">#windoworworkerglobalscope-brands-frozen-array</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-windoworworkerglobalscope-brands-frozen-array">4.1.5. Getters</a>
@@ -2624,21 +2683,21 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-windoworworkerglobalscope-brands-frozen-array②">4.1.7. toJSON method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-windoworworkerglobalscope-full-version-list-frozen-array" class="dfn-panel" data-for="windoworworkerglobalscope-full-version-list-frozen-array" id="infopanel-for-windoworworkerglobalscope-full-version-list-frozen-array" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-windoworworkerglobalscope-full-version-list-frozen-array" class="dfn-panel" data-for="windoworworkerglobalscope-full-version-list-frozen-array" id="infopanel-for-windoworworkerglobalscope-full-version-list-frozen-array">
    <span id="infopaneltitle-for-windoworworkerglobalscope-full-version-list-frozen-array" style="display:none">Info about the 'full version list frozen array' definition.</span><b><a href="#windoworworkerglobalscope-full-version-list-frozen-array">#windoworworkerglobalscope-full-version-list-frozen-array</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-windoworworkerglobalscope-full-version-list-frozen-array">4.1.6. getHighEntropyValues method</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-create-brands" class="dfn-panel" data-for="create-brands" id="infopanel-for-create-brands" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-create-brands" class="dfn-panel" data-for="create-brands" id="infopanel-for-create-brands">
    <span id="infopaneltitle-for-create-brands" style="display:none">Info about the 'create brands' definition.</span><b><a href="#create-brands">#create-brands</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-create-brands">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-create-brands①">3.5. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
+    <li><a href="#ref-for-create-brands①">3.6. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
     <li><a href="#ref-for-create-brands②">4.1.1. WindowOrWorkerGlobalScope</a> <a href="#ref-for-create-brands③">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-user-agent-equivalence-class" class="dfn-panel" data-for="user-agent-equivalence-class" id="infopanel-for-user-agent-equivalence-class" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-user-agent-equivalence-class" class="dfn-panel" data-for="user-agent-equivalence-class" id="infopanel-for-user-agent-equivalence-class">
    <span id="infopaneltitle-for-user-agent-equivalence-class" style="display:none">Info about the 'equivalence class' definition.</span><b><a href="#user-agent-equivalence-class">#user-agent-equivalence-class</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-user-agent-equivalence-class">3. User Agent Hints</a>
@@ -2646,23 +2705,23 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-user-agent-equivalence-class③">6.2. GREASE-like UA Brand Lists</a> <a href="#ref-for-user-agent-equivalence-class④">(2)</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-create-an-arbitrary-brand" class="dfn-panel" data-for="create-an-arbitrary-brand" id="infopanel-for-create-an-arbitrary-brand" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-create-an-arbitrary-brand" class="dfn-panel" data-for="create-an-arbitrary-brand" id="infopanel-for-create-an-arbitrary-brand">
    <span id="infopaneltitle-for-create-an-arbitrary-brand" style="display:none">Info about the 'create an arbitrary brand' definition.</span><b><a href="#create-an-arbitrary-brand">#create-an-arbitrary-brand</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-create-an-arbitrary-brand">4.1.2. Create brands</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-create-an-arbitrary-version" class="dfn-panel" data-for="create-an-arbitrary-version" id="infopanel-for-create-an-arbitrary-version" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-create-an-arbitrary-version" class="dfn-panel" data-for="create-an-arbitrary-version" id="infopanel-for-create-an-arbitrary-version">
    <span id="infopaneltitle-for-create-an-arbitrary-version" style="display:none">Info about the 'create an arbitrary version' definition.</span><b><a href="#create-an-arbitrary-version">#create-an-arbitrary-version</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-create-an-arbitrary-version">4.1.2. Create brands</a>
    </ul>
   </aside>
-  <aside aria-labelledby="infopaneltitle-for-create-a-brand-version-list" class="dfn-panel" data-for="create-a-brand-version-list" id="infopanel-for-create-a-brand-version-list" role="dialog">
+  <aside aria-labelledby="infopaneltitle-for-create-a-brand-version-list" class="dfn-panel" data-for="create-a-brand-version-list" id="infopanel-for-create-a-brand-version-list">
    <span id="infopaneltitle-for-create-a-brand-version-list" style="display:none">Info about the 'create a brand-version list' definition.</span><b><a href="#create-a-brand-version-list">#create-a-brand-version-list</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-create-a-brand-version-list">3.1. The 'Sec-CH-UA' Header Field</a>
-    <li><a href="#ref-for-create-a-brand-version-list①">3.5. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
+    <li><a href="#ref-for-create-a-brand-version-list①">3.6. The 'Sec-CH-UA-Full-Version-List' Header Field</a>
    </ul>
   </aside>
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