diff --git a/source b/source
index 1d179a3c075..cb3ab39286b 100644
--- a/source
+++ b/source
@@ -2815,6 +2815,8 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
        <li><dfn data-x="concept-request-replaces-client-id" data-x-href="https://fetch.spec.whatwg.org/#concept-request-replaces-client-id">replaces client id</dfn></li>
        <li><dfn data-x="concept-request-initiator" data-x-href="https://fetch.spec.whatwg.org/#concept-request-initiator">initiator</dfn></li>
        <li><dfn data-x="concept-request-destination" data-x-href="https://fetch.spec.whatwg.org/#concept-request-destination">destination</dfn></li>
+       <li><dfn data-x="request-speculative-flag" data-x-href="https://fetch.spec.whatwg.org/#request-speculative-flag">speculative flag</dfn></li>
+       <li><dfn data-x="request-service-workers-mode" data-x-href="https://fetch.spec.whatwg.org/#request-service-workers-mode">service-workers mode</dfn></li>
        <li><dfn data-x="concept-potential-destination" data-x-href="https://fetch.spec.whatwg.org/#concept-potential-destination">potential destination</dfn></li>
        <li><dfn data-x="concept-potential-destination-translate" data-x-href="https://fetch.spec.whatwg.org/#concept-potential-destination-translate">translating</dfn> a <span data-x="concept-potential-destination">potential destination</span></li>
        <li><dfn data-x="concept-script-like-destination" data-x-href="https://fetch.spec.whatwg.org/#request-destination-script-like">script-like</dfn> <span data-x="concept-request-destination">destinations</span></li>
@@ -3188,6 +3190,7 @@ a.setAttribute('href', 'https://example.com/'); // change the content attribute
              <dfn data-x-href="https://dom.spec.whatwg.org/#concept-shadow-including-descendant">shadow-including descendant</dfn>, and
              <dfn data-x-href="https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-descendant">shadow-including inclusive descendant</dfn> concepts</li>
      <li>The <dfn data-x-href="https://dom.spec.whatwg.org/#concept-tree-first-child">first child</dfn> and <dfn data-x-href="https://dom.spec.whatwg.org/#concept-tree-next-sibling">next sibling</dfn> concepts</li>
+     <li>The <dfn data-x="concept-document-origin" data-x-href="https://dom.spec.whatwg.org/#concept-document-origin"><code>origin</code></dfn></li>
      <li>The <dfn data-x-href="https://dom.spec.whatwg.org/#document-element">document element</dfn> concept</li>
      <li>The <dfn data-x-href="https://dom.spec.whatwg.org/#in-a-document-tree">in a document tree</dfn>, <dfn data-x-href="https://dom.spec.whatwg.org/#in-a-document">in a document</dfn> (legacy), and <dfn data-x-href="https://dom.spec.whatwg.org/#connected">connected</dfn> concepts</li>
      <li>The <dfn data-x="concept-slot" data-x-href="https://dom.spec.whatwg.org/#concept-slot">slot</dfn> concept, and its <dfn data-x="slot-name" data-x-href="https://dom.spec.whatwg.org/#slot-name">name</dfn> and <dfn data-x-href="https://dom.spec.whatwg.org/#slot-assigned-nodes">assigned nodes</dfn></li>
@@ -24694,6 +24697,48 @@ document.body.appendChild(wbr);</code></pre>
   keyword.</p>
 
 
+  <p>The <span>linked resource fetch setup steps</span> for this type of linked resource, given a
+  <code>link</code> element <var>el</var> and <span data-x="concept-request">request</span>
+  <var>request</var>, are:</p>
+
+  <ol>
+   <li><p>Set <var>request</var>'s <span data-x="concept-request-initiator">initiator</span>
+   to <code data-x="">prefetch</code>.</p></li>
+
+   <li><p>Set <var>request</var>'s <span data-x="request-speculative-flag">speculative</span> flag
+   to true.</p></li>
+
+   <li><p>Let <var>as</var> be the current state of <var>el</var>'s <code
+   data-x="attr-link-as">as</code> attribute.</p></li>
+
+   <li><p>Set <var>request</var>'s <span data-x="concept-request-destination">destination</span>
+   to the result of <span data-x="concept-potential-destination-translate">translating</span>
+   <var>as</var>.</p></li>
+
+   <li>
+    <p>If the browser is using both the <var>request</var>'s <span
+    data-x="concept-request-url">URL</span> and the
+    <span>top-level browsing context</span>'s <span>active document</span>'s <span
+    data-x="concept-document-origin">origin</span> as cache keys for <var>request</var>, then:</p>
+    <ol>
+     <li><p>If <var>request</var>'s <span
+     data-x="concept-request-credentials-mode">credentials mode</span> is "include", then return
+     false.</p></li>
+     <li><p>If <var>request</var>'s <span
+     data-x="concept-request-referrer-policy">referrer policy</span> is not "no-referrer", then
+     return false.</p></li>
+     <li><p>If <var>request</var>'s <span data-x="concept-request-destination">destination</span>
+     is not "document", then return false.</p></li>
+     <li><p>Set <var>request</var>'s <span
+     data-x="concept-request-redirect-mode">redirect mode</span> to "manual".</p></li>
+     <li><p>Set <var>request</var>'s <span
+     data-x="request-service-workers-mode">service workers mode</span> to "none".</p></li>
+    </ol>
+   </li>
+
+   <li><p>Return true.</p></li>
+  </ol>
+
   <h5>Link type "<dfn><code data-x="rel-preload">preload</code></dfn>"</h5>
 
   <p>The <code data-x="rel-preload">preload</code> keyword may be used with <code>link</code>