diff --git a/dom.bs b/dom.bs
index 8a1509ab..935324ee 100644
--- a/dom.bs
+++ b/dom.bs
@@ -2826,8 +2826,9 @@ before a <var>child</var>, with an optional <i>suppress observers flag</i>, run
       <ol>
        <li><p>If <var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a> is
        null, then set <var>inclusiveDescendant</var>'s <a for=Element>custom element registry</a> to
-       the result of <a>looking up a custom element registry</a> given
+       the result of <b>looking up a custom element registry</b> given
        <var>inclusiveDescendant</var>'s <a for=tree>parent</a>.
+       <!-- XXX xref -->
 
        <li><p>If <var>inclusiveDescendant</var> is <a for=Element>custom</a>, then
        <a>enqueue a custom element callback reaction</a> with <var>inclusiveDescendant</var>,
@@ -2845,8 +2846,9 @@ before a <var>child</var>, with an optional <i>suppress observers flag</i>, run
      <li><p>If <var>inclusiveDescendant</var> is <a>connected</a> and is a <a for=/>shadow root</a>
      whose <a for=ShadowRoot>custom element registry</a> is null, then set
      <var>inclusiveDescendant</var>'s <a for=ShadowRoot>custom element registry</a> to the result of
-     <a>looking up a custom element registry</a> given <var>inclusiveDescendant</var>'s
+     <b>looking up a custom element registry</b> given <var>inclusiveDescendant</var>'s
      <a for=tree>parent</a>.
+     <!-- XXX xref -->
     </ol>
   </ol>
 
@@ -6263,7 +6265,7 @@ interface Element : Node {
   ShadowRoot attachShadow(ShadowRootInit init);
   readonly attribute ShadowRoot? shadowRoot;
 
-  CustomElementRegistry? customElements;
+  readonly attribute CustomElementRegistry? customElements;
 
   Element? closest(DOMString selectors);
   boolean matches(DOMString selectors);
@@ -6310,7 +6312,8 @@ dictionary ShadowRootInit {
  "<code>precustomized</code>", or "<code>custom</code>".
 
  <dt><dfn export id=concept-element-custom-element-definition for=Element>custom element definition</dfn>
- <dd>Null or a <a for=/>custom element definition</a>.
+ <dd>Null or a <b for=/>custom element definition</b>.
+ <!-- XXX xref -->
 
  <dt><dfn export id=concept-element-is-value for=Element><code>is</code> value</dfn>
  <dd>Null or a <a for=/>valid custom element name</a>.
@@ -6565,7 +6568,7 @@ null or a {{CustomElementRegistry}} object <var>registry</var>:
  <li><p>Let <var>element</var> be a new <a for=/>element</a> that implements <var>interface</var>,
  with <a for=Element>namespace</a> set to <var>namespace</var>, <a for=Element>namespace prefix</a>
  set to <var>prefix</var>, <a for=Element>local name</a> set to <var>localName</var>,
- <a for=Element>custom element registry</var> set to <var>registry</var>,
+ <a for=Element>custom element registry</a> set to <var>registry</var>,
  <a for=Element>custom element state</a> set to <var>state</var>,
  <a for=Element>custom element definition</a> set to null, <a for=Element><code>is</code> value</a>
  set to <var>is</var>, and <a for=Node>node document</a> set to <var>document</var>.
@@ -7291,7 +7294,7 @@ a boolean <var>serializable</var>, a boolean <var>delegatesFocus</var>, a string
 <hr>
 
 <dl class=domintro>
- <dt><code><var>registry</var> = <var>element</var> . {{customElements}}</code>
+ <dt><code><var>registry</var> = <var>element</var> . {{Element/customElements}}</code>
  <dd><p>Returns <var>element</var>'s {{CustomElementRegistry}} object, if any; otherwise null.
 </dl>