anchor.diff:                  | None -> failwithumf ()
               | _ -> world
   
  +        // fin
           world
   
       /// Initialize the Nu game engine.
  
positive.code:                             match UMap.tryFind entity.EntityAddress entityBindingCounts with
                              | Some entityBindingCount ->
                                  let entityBindingCount = inc entityBindingCount
                                  printfn "%A %i %i" entity entityBindingCount (UMap.length entityBindingCounts)
                                  let entityBindingCounts = UMap.add entity.EntityAddress entityBindingCount entityBindingCounts
                                  let world = if entityBindingCount = 1 && entity.Exists world then World.setEntityPublishChangeBindings true entity world else world
                                  World.addKeyedValue EntityBindingCountsId entityBindingCounts world
                              | None ->
                                  let entityBindingCounts = UMap.add entity.EntityAddress 1 entityBindingCounts
                                  printfn "%A 1 %i" entity (UMap.length entityBindingCounts)
                                  let world = if entity.Exists world then World.setEntityPublishChangeBindings true entity world else world
                                  World.addKeyedValue EntityBindingCountsId entityBindingCounts world
                          | None ->
                              let entityBindingCounts = if World.getStandAlone world then UMap.makeEmpty Imperative else UMap.makeEmpty Functional
                              let entityBindingCounts = UMap.add entity.EntityAddress 1 entityBindingCounts
                              printfn "%A 1 %i" entity (UMap.length entityBindingCounts)
                              let world = if entity.Exists world then World.setEntityPublishChangeBindings true entity world else world
                              World.addKeyedValue EntityBindingCountsId entityBindingCounts world
                      | _ -> world
  
negative.code:                 | Some entityBindingCounts ->
                      match UMap.tryFind entity.EntityAddress entityBindingCounts with
                      | Some entityBindingCount ->
                          let entityBindingCount = dec entityBindingCount
                          let entityBindingCounts =
                              if entityBindingCount = 0
  