w3c · scottaohara · May 9, 2023 · May 9, 2023 · Jul 12, 2023 · Oct 4, 2023
diff --git a/index.html b/index.html
@@ -13594,6 +13594,208 @@ `playsinline`
     
   
 
+  
+    
+      
+      
+        `popover`
+      
+    
+    
+      
+      
+        HTML elements
+      
+    
+    
+      
+      
+        Not mapped
+      
+    
+    
+      
+      
+        Relations: `IA2_RELATION_DETAILS_FOR` points to invoking element
+        
+          Object attributes:
+          ispopup: <value> where <value> reflects the popover type
+        
+      
+    
+    
+      
+      
+        ???
+      
+    
+    
+      
+      
+        
+          Relations: `RELATION_DETAILS_FOR` points to invoking element
+        
+        
+          Object attributes: 
+          ispopup: <value> where <value> reflects the popover type.
+        
+      
+    
+    
+      
+      
+        ???
+      
+    
+    
+      
+      
+        If specified on an element with an implicit role of `generic`, then the element's role instead maps to `group`.
+      
+    
+  
+
+  
+    
+      
+      
+        `popovertarget`
+      
+    
+    
+      
+      
+        `button`;
+        `input type=button, image, reset, submit`
+      
+    
+    
+      
+      
+        
+          
+            If the associated element is displayed as a popover: 
+            `aria-expanded=true`
+          
+          
+            If the associated element is hidden, or not present in the DOM: 
+            `aria-expanded=false`
+          
 
+          
+            If the associated element is an accessibility ancestor of the element with the `popovertarget` attribute:
+            `aria-expanded=undefined`
+          
+        
+      
+    
+    
+      
+        + IAccessible2
+      
+        Use WAI-ARIA mapping
+        
+          Object attributes: `details-roles:popover`
+        
+      
+    
+    
+      
+      
+        Use WAI-ARIA mapping
+      
+    
+    
+      
+      
+        Use WAI-ARIA mapping
+        
+          Object attributes: `details-roles:popover`
+        
+      
+    
+    
+      
+      
+        Use WAI-ARIA mapping
+      
+    
+    
+      
+      
+        
+          User Agents MUST expose an `aria-details` relation with the associated popover element
+          except under either of the following conditions:
+        
+        
+          The element's `popovertargetaction` attribute value is "`hide`"
+          The associated popover element is an immediate accessibility sibling to the invoking element.
+          
+        
+      
+    
+  
+
+  
+    
+      
+      
+        `popovertargetaction`
+      
+    
+    
+      
+      
+        `button`;
+        `input type=button, image, reset, submit`
+      
+    
+    
+      
+      
+        
+          Not mapped
+        
+      
+    
+    
+      
+        IAccessible2
+      
+        Not mapped
+      
+    
+    
+      
+      
+        Not mapped
+      
+    
+    
+      
+      
+        Not mapped
+      
+    
+    
+      
+      
+        Not mapped
+      
+    
+    
+      
+      
+        The value of this attribute can impact the mappings of its related `popovertarget` attribute.
+      
+    
+  
+