Editorial: Issue2775 (#2783)

KateZhaoTR · web-flow · commit a7439fef70ca · 2026-05-15T08:45:54.000+02:00
Closes #2775 Updated language to reflect guidance for when accessibility child roles are present vs empty. Added note about host language restrictions.
diff --git a/index.html b/index.html
@@ -1171,9 +1171,9 @@ <h3><dfn>Prohibited</dfn> States and Properties</h3>
         <section id="mustContain">
           <h3>Allowed Accessibility Child Roles</h3>
           <p>
-            A list of roles which are allowed on an <a>accessibility child</a> of the element with this <a>role</a>. Authors MUST only add <a>accessibility children</a> with allowed roles. For
+            A list of roles which are allowed on an <a>accessibility child</a> of the element with this <a>role</a>. If the list is not empty, authors MUST only add <a>accessibility children</a> with allowed roles. For
             example, an element with the role <rref>list</rref> allows <a>accessibility children</a> with the role <rref>listitem</rref>, but does not allow <a>accessibility children</a> with the role
-            <rref>option</rref>.
+            <rref>option</rref>. If the list is empty, then there are no restrictions on accessibility child roles.
           </p>
           <p>
             Descendants which are not children of an element ancestor are not constrained by <em>allowed accessibility child roles</em>. For example, an <code>image</code> is not an
@@ -1190,6 +1190,7 @@ <h3>Allowed Accessibility Child Roles</h3>
             <a>accessibility child</a> with a role of <rref>row</rref> will not fulfill the requirement that <rref>listbox</rref> allows children with <rref>option</rref> or <rref>group</rref> roles.
           </p>
           <p class="note">An element with the appropriate <a href="#implicit_semantics">implicit WAI-ARIA semantic</a> fulfills this requirement.</p>
+          <p class="note">Host languages may further restrict accessibility child roles.</p>
           <div class="note">
             <p>Examples of valid ways to mark up allowed accessibility child roles include:</p>
             <ol>
