anchor.diff:          let cameraView  = DefaultCameraController.control win.Mouse win.Keyboard win.Time initialView
   
           let candidates = 
  -            [| for _ in 1 .. 9 do yield Helpers.box C4b.Red Box3d.Unit |> Sg.ofIndexedGeometry |]
  +            [| for _ in 1 .. 9 do yield Sg.box' C4b.Red Box3d.Unit  |]
   
           let scale = 100.0
           let rnd = Random()
  
positive.code:         let cameraView  = DefaultCameraController.control win.Mouse win.Keyboard win.Time initialView
  
          let candidates = 
              [| for _ in 0 .. 8 do yield Helpers.box C4b.Red Box3d.Unit |> Sg.ofIndexedGeometry |]
  
          let scale = 100.0
          let rnd = Random()
  
negative.code:         let cameraView  = Mod.constant initialView
  
          let candidates = 
              [| for _ in 1 .. 9 do yield Sg.box' C4b.Red Box3d.Unit |]
  
          let scale = 100.0
          let rnd = Random()
  