diff --git a/source b/source
index 6360be48c4c..03030fec3c4 100644
--- a/source
+++ b/source
@@ -80127,8 +80127,8 @@ console.assert(iframeWindow.frameElement === null);
    <span data-x="browsing context group">browsing context groups</span> where:</p>
 
    <ul>
-    <li><p>every top-level <span>Document</span> has `<code data-x=""><span
-    data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</span>: <span
+    <li><p>every top-level <span>Document</span> has `<code
+    data-x=""><span>Cross-Origin-Opener-Policy</span>: <span
     data-x="coop-same-origin">same-origin</span></code>`, and</p></li>
 
     <li><p>every <span>Document</span> has a `<code>Cross-Origin-Embedder-Policy</code>` header
@@ -82766,10 +82766,10 @@ interface <dfn interface>BarProp</dfn> {
 
   <p>A <code>Document</code> delivered over a <span>secure context</span> can request that it be
   placed in an <span>origin</span>-<span data-x="agent cluster key">keyed</span> <span>agent
-  cluster</span>, by using the `<code
-  data-x="http-origin-agent-cluster">Origin-Agent-Cluster</code>` HTTP response header. This header
-  is a <span data-x="http-structured-header">structured header</span> whose value must be a <span
-  data-x="http-structured-header-boolean">boolean</span>. <ref spec=STRUCTURED-FIELDS></p>
+  cluster</span>, by using the `<dfn http-header
+  id="http-origin-agent-cluster"><code>Origin-Agent-Cluster</code></dfn>` HTTP response header. This
+  header is a <span data-x="http-structured-header">structured header</span> whose value must be a
+  <span data-x="http-structured-header-boolean">boolean</span>. <ref spec=STRUCTURED-FIELDS></p>
 
   <p><span w-nodev>Per the processing model in the <span data-x="create-the-document-object">create
   and initialize a new <code>Document</code> object</span>, values</span><span w-dev>Values</span>
@@ -82787,11 +82787,11 @@ interface <dfn interface>BarProp</dfn> {
   to allocate implementation-specific resources corresponding to <span data-x="agent cluster">agent
   clusters</span>, such as processes or threads, more efficiently.</p>
 
-  <p>Note that within a <span>browsing context group</span>, the `<code
-  data-x="http-origin-agent-cluster">Origin-Agent-Cluster</code>` header can never cause same-origin
-  <code>Document</code> objects to end up in different <span data-x="agent cluster">agent
-  clusters</span>, even if one sends the header and the other doesn't.<span w-nodev> This is
-  prevented by means of the <span>historical agent cluster key map</span>.</span></p>
+  <p>Note that within a <span>browsing context group</span>, the `<code>Origin-Agent-Cluster</code>`
+  header can never cause same-origin <code>Document</code> objects to end up in different <span
+  data-x="agent cluster">agent clusters</span>, even if one sends the header and the other
+  doesn't.<span w-nodev> This is prevented by means of the <span>historical agent cluster key
+  map</span>.</span></p>
 
   <p class="note">This means that the <code
   data-x="dom-originAgentCluster">originAgentCluster</code> getter can return false, even if the
@@ -82811,9 +82811,8 @@ interface <dfn interface>BarProp</dfn> {
   <p class="note">Similarly, <code>Document</code>s whose <span>agent cluster</span>'s
   <span data-x="agent-cluster-cross-origin-isolation">cross-origin isolation mode</span> is not
   "<code data-x="cross-origin-isolation-none">none</code>" are automatically origin-keyed. The
-  `<code data-x="http-origin-agent-cluster">Origin-Agent-Cluster</code>` header might be useful as
-  an additional hint to implementations about resource allocation, since the `<code
-  data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</code>` and
+  `<code>Origin-Agent-Cluster</code>` header might be useful as an additional hint to
+  implementations about resource allocation, since the `<code>Cross-Origin-Opener-Policy</code>` and
   `<code>Cross-Origin-Embedder-Policy</code>` headers used to achieve cross-origin isolation are
   more about ensuring that everything in the same address space opts in to being there. But adding
   it would have no additional observable effects on author code.</p>
@@ -83193,11 +83192,9 @@ interface <dfn interface>BarProp</dfn> {
     data-x="cross-origin-isolation-concrete">concrete</code>".</p>
 
     <p class="note">"<code data-x="coop-same-origin-plus-COEP">same-origin-plus-COEP</code>" cannot
-    be directly set via the `<code
-    data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</code>` header, but results
-    from a combination of setting both `<code data-x=""><span
-    data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</span>: <span
-    data-x="coop-same-origin">same-origin</span></code>` and a
+    be directly set via the `<code>Cross-Origin-Opener-Policy</code>` header, but results
+    from a combination of setting both `<code data-x=""><span>Cross-Origin-Opener-Policy</span>:
+    <span data-x="coop-same-origin">same-origin</span></code>` and a
     `<code>Cross-Origin-Embedder-Policy</code>` header whose value is <span>compatible with
     cross-origin isolation</span> together.<p>
    </dd>
@@ -83239,12 +83236,13 @@ interface <dfn interface>BarProp</dfn> {
    <li><p>Return false.</p></li>
   </ol>
 
-  <h4>The headers</h4>
+  <h4 id="the-coop-headers">The headers</h4>
 
   <p>A <code>Document</code>'s <span data-x="concept-document-coop">cross-origin opener
-  policy</span> is derived from the `<code
-  data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</code>`  and the `<code
-  data-x="http-cross-origin-opener-policy-report-only">Cross-Origin-Opener-Policy-Report-Only</code>`
+  policy</span> is derived from the `<dfn http-header
+  id="http-cross-origin-opener-policy"><code>Cross-Origin-Opener-Policy</code></dfn>` and `<dfn
+  http-header
+  id="http-cross-origin-opener-policy-report-only"><code>Cross-Origin-Opener-Policy-Report-Only</code></dfn>`
   HTTP response headers. These headers are <span data-x="http-structured-header">structured
   headers</span> whose value must be a <span data-x="http-structured-header-token">token</span>.
   <ref spec=STRUCTURED-FIELDS></p>
@@ -83272,9 +83270,8 @@ interface <dfn interface>BarProp</dfn> {
    <var>policy</var>.</p></li>
 
    <li><p>Let <var>value</var> be the result of <span>getting a structured field value</span> given
-   `<code data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</code>` and "<code
-   data-x="">item</code>" from <var>response</var>'s <span
-   data-x="concept-response-header-list">header list</span>.</p></li>
+   `<code>Cross-Origin-Opener-Policy</code>` and "<code data-x="">item</code>" from
+   <var>response</var>'s <span data-x="concept-response-header-list">header list</span>.</p></li>
 
    <li>
     <p>If <var>parsedItem</var> is not null, then:</p>
@@ -83312,10 +83309,9 @@ interface <dfn interface>BarProp</dfn> {
    </li>
 
    <li><p>Set <var>parsedItem</var> to the result of <span>getting a structured field value</span>
-   given `<code
-   data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy-Report-Only</code>` and
-   "<code data-x="">item</code>" from <var>response</var>'s <span
-   data-x="concept-response-header-list">header list</span>.</p></li>
+   given `<code>Cross-Origin-Opener-Policy-Report-Only</code>` and "<code data-x="">item</code>"
+   from <var>response</var>'s <span data-x="concept-response-header-list">header
+   list</span>.</p></li>
 
    <li>
     <p>If <var>parsedItem</var> is not null, then:</p>
@@ -84412,13 +84408,14 @@ interface <dfn interface>BarProp</dfn> {
   is "<code data-x="">coep</code>". It is <span>visible to
   <code>ReportingObserver</code>s</span>.</p>
 
-  <h4>The headers</h4>
+  <h4 id="the-coep-headers">The headers</h4>
 
-  <p>The `<code>Cross-Origin-Embedder-Policy</code>` and
-  `<code>Cross-Origin-Embedder-Policy-Report-Only</code>` HTTP response header fields allow a server
-  to declare an <span>embedder policy</span> for an <span>environment settings object</span>. These
-  headers are <span data-x="http-structured-header">structured headers</span> whose values must be
-  <span data-x="http-structured-header-token">token</span>. <ref spec=STRUCTURED-FIELDS>
+  <p>The `<dfn http-header><code>Cross-Origin-Embedder-Policy</code></dfn>` and
+  `<dfn http-header><code>Cross-Origin-Embedder-Policy-Report-Only</code></dfn>` HTTP response
+  headers allow a server to declare an <span>embedder policy</span> for an <span>environment
+  settings object</span>. These headers are <span data-x="http-structured-header">structured
+  headers</span> whose values must be <span data-x="http-structured-header-token">token</span>. <ref
+  spec=STRUCTURED-FIELDS>
 
   <p>The valid <span
   data-x="http-structured-header-token">token</span> values are the <span data-x="embedder policy
@@ -84824,9 +84821,8 @@ interface <dfn interface>BarProp</dfn> {
   href="https://github.com/whatwg/html/issues/4782">whatwg/html issue #4782</a> and <a
   href="https://github.com/whatwg/html/issues/5350">whatwg/html issue #5350</a> for defining
   <span>browsing session</span>. It is roughly analogous to a <span>top-level browsing
-  context</span> except that it cannot be replaced due to a `<code
-  data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</code>` header or
-  navigation.</p>
+  context</span> except that it cannot be replaced due to a
+  `<code>Cross-Origin-Opener-Policy</code>` header or navigation.</p>
 
   <p>A <span>top-level browsing context</span> has an associated <dfn export data-x="tlbc browsing
   session" for="top-level browsing context">browsing session</dfn> which is a <span>browsing
@@ -87763,9 +87759,8 @@ interface <dfn interface>Location</dfn> { // but see also <a href="#the-location
 
     <ol>
      <li><p>Let <var>oacHeader</var> be the result of <span>getting a structured field value</span>
-     given `<code data-x="http-origin-agent-cluster">Origin-Agent-Cluster</code>` and "<code
-     data-x="">item</code>" from <var>response</var>'s <span
-     data-x="concept-response-header-list">header list</span>.</p></li>
+     given `<code>Origin-Agent-Cluster</code>` and "<code data-x="">item</code>" from
+     <var>response</var>'s <span data-x="concept-response-header-list">header list</span>.</p></li>
 
      <li><p>Let <var>requestsOAC</var> be true if <var>oacHeader</var> is not
      null and <var>oacHeader</var>[0] is the <span
@@ -95747,8 +95742,7 @@ interface mixin <dfn interface>WindowOrWorkerGlobalScope</dfn> {
 
    <dt><code data-x="">self.<span subdfn data-x="dom-crossOriginIsolated">crossOriginIsolated</span></code></dt>
    <dd><p>Returns whether scripts running in this global are allowed to use APIs that require
-   cross-origin isolation. This depends on the `<code
-   data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</code>` and
+   cross-origin isolation. This depends on the `<code>Cross-Origin-Opener-Policy</code>` and
    `<code>Cross-Origin-Embedder-Policy</code>` HTTP response headers and the "<code
    data-x="cross-origin-isolated-feature">cross-origin-isolated</code>" feature.</p></dd>
   </dl>
@@ -121380,123 +121374,6 @@ interface <dfn interface>External</dfn> {
   <code>text/event-stream</code> resources.</p>
 
 
-  <h3>`<dfn http-header><code>Cross-Origin-Embedder-Policy</code></dfn>`</h3>
-
-  <p>This section describes a header for registration in the Permanent Message Header Field
-  Registry. <ref spec=RFC3864></p>
-
-  <dl>
-   <dt>Header field name:</dt>
-   <dd>Cross-Origin-Embedder-Policy</dd>
-   <dt>Applicable protocol:</dt>
-   <dd>http</dd>
-   <dt>Status:</dt>
-   <dd>standard</dd>
-   <dt>Author/Change controller:</dt>
-   <dd>WHATWG</dd>
-   <dt>Specification document(s):</dt>
-   <dd>
-    This document is the relevant specification.
-   </dd>
-   <dt>Related information:</dt>
-   <dd>None.</dd>
-  </dl>
-
-
-  <h3>`<dfn http-header><code>Cross-Origin-Embedder-Policy-Report-Only</code></dfn>`</h3>
-
-  <p>This section describes a header for registration in the Permanent Message Header Field
-  Registry. <ref spec=RFC3864></p>
-
-  <dl>
-   <dt>Header field name:</dt>
-   <dd>Cross-Origin-Embedder-Policy-Report-Only</dd>
-   <dt>Applicable protocol:</dt>
-   <dd>http</dd>
-   <dt>Status:</dt>
-   <dd>standard</dd>
-   <dt>Author/Change controller:</dt>
-   <dd>WHATWG</dd>
-   <dt>Specification document(s):</dt>
-   <dd>
-    This document is the relevant specification.
-   </dd>
-   <dt>Related information:</dt>
-   <dd>None.</dd>
-  </dl>
-
-
-  <h3>`<dfn http-header><code
-  data-x="http-cross-origin-opener-policy">Cross-Origin-Opener-Policy</code></dfn>`</h3>
-
-  <p>This section describes a header for registration in the Permanent Message Header Field
-  Registry. <ref spec=RFC3864></p>
-
-  <dl>
-   <dt>Header field name:</dt>
-   <dd>Cross-Origin-Opener-Policy</dd>
-   <dt>Applicable protocol:</dt>
-   <dd>http</dd>
-   <dt>Status:</dt>
-   <dd>standard</dd>
-   <dt>Author/Change controller:</dt>
-   <dd>WHATWG</dd>
-   <dt>Specification document(s):</dt>
-   <dd>
-    This document is the relevant specification.
-   </dd>
-   <dt>Related information:</dt>
-   <dd>None.</dd>
-  </dl>
-
-
-  <h3>`<dfn http-header><code
-  data-x="http-cross-origin-opener-policy-report-only">Cross-Origin-Opener-Policy-Report-Only</code></dfn>`</h3>
-
-  <p>This section describes a header for registration in the Permanent Message Header Field
-  Registry. <ref spec=RFC3864></p>
-
-  <dl>
-   <dt>Header field name:</dt>
-   <dd>Cross-Origin-Opener-Policy-Report-Only</dd>
-   <dt>Applicable protocol:</dt>
-   <dd>http</dd>
-   <dt>Status:</dt>
-   <dd>standard</dd>
-   <dt>Author/Change controller:</dt>
-   <dd>WHATWG</dd>
-   <dt>Specification document(s):</dt>
-   <dd>
-    This document is the relevant specification.
-   </dd>
-   <dt>Related information:</dt>
-   <dd>None.</dd>
-  </dl>
-
-
-  <h3>`<dfn><code data-x="http-origin-agent-cluster">Origin-Agent-Cluster</code></dfn>`</h3>
-
-  <p>This section describes a header for registration in the Permanent Message Header Field
-  Registry. <ref spec=RFC3864></p>
-
-  <dl>
-   <dt>Header field name:</dt>
-   <dd>Origin-Agent-Cluster</dd>
-   <dt>Applicable protocol:</dt>
-   <dd>http</dd>
-   <dt>Status:</dt>
-   <dd>standard</dd>
-   <dt>Author/Change controller:</dt>
-   <dd>WHATWG</dd>
-   <dt>Specification document(s):</dt>
-   <dd>
-    This document is the relevant specification.
-   </dd>
-   <dt>Related information:</dt>
-   <dd>None.</dd>
-  </dl>
-
-
   <h3 id="ping-from">`<dfn><code data-x="http-ping-from">Ping-From</code></dfn>`</h3>
 
   <p>This section describes a header for registration in the Permanent Message Header Field