anchor.diff:                      elif isAddressSelected subscriber world_ then Some (subscription address subscriber message_ world_)
                       else Some (message_, world_))
                   (message, world)
  -                subList
  +                subListSorted
           world_
   
   /// Subscribe to messages at the given address.
  
positive.code:         // TODO: abstract member HandleIntegrationMessages : IntegrationMessage rQueue -> World -> World
          end
  
  /// Initialize Nu's various type converters.
  /// Must be called for reflection to work in Nu.
  let initTypeConverters () =
      initMathConverters ()
      initAudioConverters ()
      initRenderConverters ()
  
  /// Mark a message as handled.
  let handle message =
  
negative.code: let MouseLeftAddress = [Lun.make "mouse"; Lun.make "left"]
  let DownMouseLeftAddress = Lun.make "down" :: MouseLeftAddress
  let UpMouseLeftAddress = Lun.make "up" :: MouseLeftAddress
  let GameModelPublishingPriority = Single.MaxValue
  let ScreenModelPublishingPriority = GameModelPublishingPriority * 0.5f
  let GroupModelPublishingPriority = ScreenModelPublishingPriority * 0.5f
  
  /// Describes data relevant to specific event messages.
  type [<ReferenceEquality>] MessageData =
  