diff --git a/dom.bs b/dom.bs
index 403cfc935..595724d1f 100644
--- a/dom.bs
+++ b/dom.bs
@@ -6412,8 +6412,8 @@ steps:
 </ol>
 
 <p>To <dfn id=concept-element-attributes-validate-and-set-value>validate and set attribute value</dfn>
-<var>value</var> for an <a>attribute</a> <var>attribute</var>, with <a for=/>element</a>
-<var>element</var>, run these steps:
+{{TrustedType}} or a string <var>value</var> for an <a>attribute</a> <var>attribute</var>, with
+<a for=/>element</a> <var>element</var>:
 
 <ol>
  <li><p>Let <var>validValue</var> be the result of calling
@@ -6508,26 +6508,21 @@ or string <var>namespace</var> (default null):
  <a lt="get an attribute by namespace and local name">getting an attribute</a> given
  <var>namespace</var>, <var>localName</var>, and <var>element</var>.
 
- <li>If <var>attribute</var> is null, create an <a>attribute</a> whose <a for=Attr>namespace</a> is
- <var>namespace</var>, <a for=Attr>namespace prefix</a> is <var>prefix</var>,
- <a for=Attr>local name</a> is <var>localName</var>, <a for=Attr>value</a> is <var>value</var>, and
- <a for=Node>node document</a> is <var>element</var>'s <a for=Node>node document</a>, then
- <a lt="append an attribute">append</a> this <a>attribute</a> to <var>element</var>, and then
- return.
-
- <ol>
-  <li><p>Set <var>attribute</var> to a new <a>attribute</a> whose <a for=Attr>namespace</a> is
-  <var>namespace</var>, <a for=Attr>namespace prefix</a> is <var>prefix</var>,
-  <a for=Attr>local name</a> is <var>localName</var> and <a for=Node>node document</a> is
-  <var>element</var>'s <a for=Node>node document</a>.
+ <li>
+  <p>If <var>attribute</var> is null, then:
+  <ol>
+    <li><p>Set <var>attribute</var> to a new <a>attribute</a> whose <a for=Attr>namespace</a> is
+    <var>namespace</var>, <a for=Attr>namespace prefix</a> is <var>prefix</var>,
+    <a for=Attr>local name</a> is <var>localName</var> and <a for=Node>node document</a> is
+    <var>element</var>'s <a for=Node>node document</a>.
 
-  <li><p><a>Validate and set attribute value</a> <var>value</var> for <var>attribute</var> with
-  <var>element</var>.
+    <li><p><a>Validate and set attribute value</a> <var>value</var> for <var>attribute</var> with
+    <var>element</var>.
 
-  <li><p><a lt="append an attribute">Append</a> <var>attribute</var> to <var>element</var>.
+    <li><p><a lt="append an attribute">Append</a> <var>attribute</var> to <var>element</var>.
 
-  <li><p>Return.
- </ol>
+    <li><p>Return.
+  </ol>
 
  <li><p><a lt="change an attribute">Change</a> <var>attribute</var> to <var>value</var>.
 </ol>
@@ -6790,20 +6785,21 @@ method steps are:
  and null otherwise.
  <!-- This is step 2 of "get an attribute by name", modified as appropriate -->
 
- <li><p>If <var>attribute</var> is null, then:
+ <li>
+  <p>If <var>attribute</var> is null, then:
 
- <ol>
-  <li><p>Set <var>attribute</var> to a new <a>attribute</a> whose <a for=Attr>local name</a> is
-  <var>qualifiedName</var> and <a for=Node>node document</a> is <a>this</a>'s
-  <a for=Node>node document</a>.
+  <ol>
+   <li><p>Set <var>attribute</var> to a new <a>attribute</a> whose <a for=Attr>local name</a> is
+   <var>qualifiedName</var> and <a for=Node>node document</a> is <a>this</a>'s
+   <a for=Node>node document</a>.
 
-  <li><p><a>Validate and set attribute value</a> <var>value</var> for <var>attribute</var>,
-  with <a>this</a>.
+   <li><p><a>Validate and set attribute value</a> <var>value</var> for <var>attribute</var>,
+   with <a>this</a>.
 
-  <li><p><a lt="append an attribute">Append</a> <var>attribute</var> to <a>this</a>.
+   <li><p><a lt="append an attribute">Append</a> <var>attribute</var> to <a>this</a>.
 
-  <li><p>Return.
- </ol>
+   <li><p>Return.
+  </ol>
 
  <li><p><a lt="change an attribute">Change</a> <var>attribute</var> to <var>value</var>.
 </ol>