   case DefaultButton                          = "AXDefaultButton" //(id) - UIElement for default button
   case CancelButton                           = "AXCancelButton" //(id) - UIElement for cancel button
   case FullScreenButton                       = "AXFullScreenButton" //(id) - UIElement for full screen button (or nil)
+  /// - note: private/undocumented attribute
+  case FullScreen                             = "AXFullScreen" //(NSNumber *) - (boolValue) is the window fullscreen
 
   // Application-specific attributes
   case MenuBar                                = "AXMenuBar" //(id)         - UIElement for the menu bar

  case VisibleChildren                        = "AXVisibleChildren" //(NSArray *)  - child elements which are visible
  case Position                               = "AXPosition" //(NSValue *)  - (pointValue) position in screen coords
  case Size                                   = "AXSize" //(NSValue *)  - (sizeValue) size
  case Contents                               = "AXContents" //(NSArray *)  - main elements
  case Title                                  = "AXTitle" //(NSString *) - visible text (e.g. of a push button)
  case Description                            = "AXDescription" //(NSString *) - instance description

  case FocusedWindow                          = "AXFocusedWindow" //(id)         - UIElement for the key window.
  case FocusedUIElement                       = "AXFocusedUIElement" //(id)         - Currently focused UIElement.
  case ExtrasMenuBar                          = "AXExtrasMenuBar" //(id)         - UIElement for the application extras menu bar.
  /// - note: private/undocumented attribute
  case EnhancedUserInterface                  = "AXEnhancedUserInterface" //(NSNumber *) - (boolValue) is the enhanced user interface active?

  case Orientation                            = "AXOrientation" //(NSString *) - NSAccessibilityXXXOrientationValue

