diff --git a/index.bs b/index.bs index c61e491..395f344 100644 --- a/index.bs +++ b/index.bs @@ -50,6 +50,7 @@ table td, table th { 
 spec:html; type:element; text:link
+spec:webidl; type:interface; text:object
 
@@ -1230,54 +1231,66 @@ the user agent MUST run the following steps:
 

   The artwork
   attribute reflects the {{MediaMetadata}}'s artwork
-  images. On getting, it MUST return the result of the following steps:
+  images. On getting, it MUST run the following steps:
   
    
     
  1. 
-      Let frozenArtwork be an empty list of type object.
-    
    2. 
-    
  2. 
-      For each entry in the {{MediaMetadata}}'s artwork images, perform the following steps:
+      If the {{MediaMetadata}}'s converted artwork images is undefined,
+      run the following steps:
       
      
         
    1. 
-          Let image be a new {{MediaImage}}.
-        
      2. 
-        
    2. 
-          Set image's {{MediaImage/src}} to entry's
-          {{MediaImage/src}}.
-        
      3. 
-        
    3. 
-          Set image's {{MediaImage/sizes}} to entry's
-          {{MediaImage/sizes}}.
-        
      4. 
-        
    4. 
-          Set image's {{MediaImage/type}} to entry's
-          {{MediaImage/type}}.
-        
      5. 
-        
    5. 
-          Convert image into an object
-          whose type is object.
+          Let frozenArtwork be an empty list of type object.
         
      6. 
-        
         
    6. 
-          Call {{Object/freeze(O)}} on image, to prevent accidental
-          mutation by scripts.
+          For each entry in the {{MediaMetadata}}'s artwork images, perform the following steps:
+          
        
+            
      1. 
+              Let image be a new {{MediaImage}}.
+            
        2. 
+            
      2. 
+              Set image's {{MediaImage/src}} to entry's
+              {{MediaImage/src}}.
+            
        3. 
+            
      3. 
+              Set image's {{MediaImage/sizes}} to entry's
+              {{MediaImage/sizes}}.
+            
        4. 
+            
      4. 
+              Set image's {{MediaImage/type}} to entry's
+              {{MediaImage/type}}.
+            
        5. 
+            
      5. 
+              Convert image into an object
+              whose type is object.
+            
        6. 
+            
+            
      6. 
+              Call {{Object/freeze(O)}} on image, to prevent accidental
+              mutation by scripts.
+            
        7. 
+            
      7. 
+              Append the object to frozenArtwork.
+            
        8. 
+          
      
         
      7. 
         
    7. 
-          Append the object to frozenArtwork.
+          Set the {{MediaMetadata}}'s converted artwork images to frozenArtwork.
         
      8. 
       
    
     
    3. 
     
  3. 
-      Create a frozen array from frozenArtwork.
+      Return the {{MediaMetadata}}'s converted artwork images.
     
    4. 
   

   On setting, it MUST run the following steps:
   
    
+    
  1. 
+      Set the {{MediaMetadata}}'s converted artwork images to undefined.
+    
    2. 
     
  2. 
       Convert the frozenArtwork from a list of type object
       into a list of type {{MediaImage}}.