diff --git a/source b/source
index 864a982e0de..0c25081329f 100644
--- a/source
+++ b/source
@@ -136026,6 +136026,14 @@ ul[type=disc i], li[type=disc i] { list-style-type: disc; }
 ul[type=circle i], li[type=circle i] { list-style-type: circle; }
 ul[type=square i], li[type=square i] { list-style-type: square; }</code></pre>
 
+  <p>In <span>quirks mode</span>, the following rules are also expected to apply:</p>
+
+  <pre><code class="css">@namespace "http://www.w3.org/1999/xhtml";
+
+li { list-style-position: inside; }
+li :is(ul, ol) { list-style-position: outside; }
+:is(ul, ol) :is(ul, ol, li) { list-style-position: unset; }</code></pre>
+
   <p>When rendering <code>li</code> elements, non-CSS user agents are expected to use the
   <span>ordinal value</span> of the <code>li</code> element to render the counter in the list item
   marker.</p>