diff --git a/index.html b/index.html
index 00406eaf8..1725f4664 100644
--- a/index.html
+++ b/index.html
@@ -12281,7 +12281,7 @@ <h2>Interface Mixin <dfn>AccessibilityRole</dfn></h2>
 		<h2>Interface Mixin <dfn>AriaAttributes</dfn></h2>
 		<pre class="idl">
 			interface mixin AriaAttributes {
-				attribute DOMString? ariaActiveDescendant;
+				attribute Element? ariaActiveDescendantElement;
 				attribute DOMString? ariaAtomic;
 				attribute DOMString? ariaAutoComplete;
 				attribute DOMString? ariaBusy;
@@ -12289,27 +12289,27 @@ <h2>Interface Mixin <dfn>AriaAttributes</dfn></h2>
 				attribute DOMString? ariaColCount;
 				attribute DOMString? ariaColIndex;
 				attribute DOMString? ariaColSpan;
-				attribute DOMString? ariaControls;
+				attribute FrozenArray&lt;Element&gt;? ariaControlsElements;
 				attribute DOMString? ariaCurrent;
-				attribute DOMString? ariaDescribedBy;
-				attribute DOMString? ariaDetails;
+				attribute FrozenArray&lt;Element&gt;? ariaDescribedByElements;
+				attribute Element? ariaDetailsElement;
 				attribute DOMString? ariaDisabled;
-				attribute DOMString? ariaErrorMessage;
+				attribute Element? ariaErrorMessageElement;
 				attribute DOMString? ariaExpanded;
-				attribute DOMString? ariaFlowTo;
+				attribute FrozenArray&lt;Element&gt;? ariaFlowToElements;
 				attribute DOMString? ariaHasPopup;
 				attribute DOMString? ariaHidden;
 				attribute DOMString? ariaInvalid;
 				attribute DOMString? ariaKeyShortcuts;
 				attribute DOMString? ariaLabel;
-				attribute DOMString? ariaLabelledBy;
+				attribute FrozenArray&lt;Element&gt;? ariaLabelledByElements;
 				attribute DOMString? ariaLevel;
 				attribute DOMString? ariaLive;
 				attribute DOMString? ariaModal;
 				attribute DOMString? ariaMultiLine;
 				attribute DOMString? ariaMultiSelectable;
 				attribute DOMString? ariaOrientation;
-				attribute DOMString? ariaOwns;
+				attribute FrozenArray&lt;Element&gt;? ariaOwnsElements;
 				attribute DOMString? ariaPlaceholder;
 				attribute DOMString? ariaPosInSet;
 				attribute DOMString? ariaPressed;
@@ -12335,7 +12335,7 @@ <h2>ARIA Attribute Reflection</h2>
 			<p>User agents MUST <a href="https://www.w3.org/TR/html52/infrastructure.html#reflecting-content-attributes-in-idl-attributes">reflect</a> the following content attributes to each of the corresponding IDL attributes.</p>
 			<table>
 				<tr><th>IDL Attribute</th><th>Reflected ARIA Content Attribute</th></tr>
-				<tr><td><dfn>ariaActiveDescendant</dfn></td><td><pref>aria-activedescendant</pref></td></tr>
+				<tr><td><dfn>ariaActiveDescendantElement</dfn></td><td><pref>aria-activedescendant</pref></td></tr>
 				<tr><td><dfn>ariaAtomic</dfn></td><td><pref>aria-atomic</pref></td></tr>
 				<tr><td><dfn>ariaAutoComplete</dfn></td><td><pref>aria-autocomplete</pref></td></tr>
 				<tr><td><dfn>ariaBusy</dfn></td><td><sref>aria-busy</sref></td></tr>
@@ -12343,27 +12343,27 @@ <h2>ARIA Attribute Reflection</h2>
 				<tr><td><dfn>ariaColCount</dfn></td><td><pref>aria-colcount</pref></td></tr>
 				<tr><td><dfn>ariaColIndex</dfn></td><td><pref>aria-colindex</pref></td></tr>
 				<tr><td><dfn>ariaColSpan</dfn></td><td><pref>aria-colspan</pref></td></tr>
-				<tr><td><dfn>ariaControls</dfn></td><td><pref>aria-controls</pref></td></tr>
+				<tr><td><dfn>ariaControlsElements</dfn></td><td><pref>aria-controls</pref></td></tr>
 				<tr><td><dfn>ariaCurrent</dfn></td><td><sref>aria-current</sref></td></tr>
-				<tr><td><dfn>ariaDescribedBy</dfn></td><td><pref>aria-describedby</pref></td></tr>
-				<tr><td><dfn>ariaDetails</dfn></td><td><pref>aria-details</pref></td></tr>
+				<tr><td><dfn>ariaDescribedByElements</dfn></td><td><pref>aria-describedby</pref></td></tr>
+				<tr><td><dfn>ariaDetailsElement</dfn></td><td><pref>aria-details</pref></td></tr>
 				<tr><td><dfn>ariaDisabled</dfn></td><td><sref>aria-disabled</sref></td></tr>
-				<tr><td><dfn>ariaErrorMessage</dfn></td><td><pref>aria-errormessage</pref></td></tr>
+				<tr><td><dfn>ariaErrorMessageElement</dfn></td><td><pref>aria-errormessage</pref></td></tr>
 				<tr><td><dfn>ariaExpanded</dfn></td><td><sref>aria-expanded</sref></td></tr>
-				<tr><td><dfn>ariaFlowTo</dfn></td><td><pref>aria-flowto</pref></td></tr>
+				<tr><td><dfn>ariaFlowToElements</dfn></td><td><pref>aria-flowto</pref></td></tr>
 				<tr><td><dfn>ariaHasPopup</dfn></td><td><pref>aria-haspopup</pref></td></tr>
 				<tr><td><dfn>ariaHidden</dfn></td><td><sref>aria-hidden</sref></td></tr>
 				<tr><td><dfn>ariaInvalid</dfn></td><td><sref>aria-invalid</sref></td></tr>
 				<tr><td><dfn>ariaKeyShortcuts</dfn></td><td><pref>aria-keyshortcuts</pref></td></tr>
 				<tr><td><dfn>ariaLabel</dfn></td><td><pref>aria-label</pref></td></tr>
-				<tr><td><dfn>ariaLabelledBy</dfn></td><td><pref>aria-labelledby</pref></td></tr>
+				<tr><td><dfn>ariaLabelledByElements</dfn></td><td><pref>aria-labelledby</pref></td></tr>
 				<tr><td><dfn>ariaLevel</dfn></td><td><pref>aria-level</pref></td></tr>
 				<tr><td><dfn>ariaLive</dfn></td><td><pref>aria-live</pref></td></tr>
 				<tr><td><dfn>ariaModal</dfn></td><td><pref>aria-modal</pref></td></tr>
 				<tr><td><dfn>ariaMultiLine</dfn></td><td><pref>aria-multiline</pref></td></tr>
 				<tr><td><dfn>ariaMultiSelectable</dfn></td><td><pref>aria-multiselectable</pref></td></tr>
 				<tr><td><dfn>ariaOrientation</dfn></td><td><pref>aria-orientation</pref></td></tr>
-				<tr><td><dfn>ariaOwns</dfn></td><td><pref>aria-owns</pref></td></tr>
+				<tr><td><dfn>ariaOwnsElements</dfn></td><td><pref>aria-owns</pref></td></tr>
 				<tr><td><dfn>ariaPlaceholder</dfn></td><td><pref>aria-placeholder</pref></td></tr>
 				<tr><td><dfn>ariaPosInSet</dfn></td><td><pref>aria-posinset</pref></td></tr>
 				<tr><td><dfn>ariaPressed</dfn></td><td><sref>aria-pressed</sref></td></tr>