anchor.diff:  
                   [// backdrop sprite
                    Content.staticSprite Simulants.FieldBackdrop.Name
  -                    [Entity.Absolute == true
  -                     Entity.Depth == Single.MinValue
  +                    [Entity.Bounds <== model ->> (fun _ world -> World.getViewBoundsAbsolute world); Entity.Depth == Single.MinValue; Entity.Absolute == true
                        Entity.StaticImage == asset Assets.DefaultPackageName "Image9"
  -                     Entity.Bounds <== model ->> fun _ world -> World.getViewBoundsAbsolute world
                        Entity.Color <== model --> fun model ->
                           match data.Value.Fields.TryGetValue model.FieldType with
                           | (true, fieldData) -> fieldData.FieldBackgroundColor
  
positive.code: 
                   // submenu button
                   Content.button Simulants.FieldSubmenu.Name
                      [Entity.Position == v2 -444.0f -240.0f
                       Entity.Depth == Constants.Field.GuiDepth
                       Entity.Size == v2 192.0f 64.0f
                       Entity.Text == "Submenu"
                       Entity.UpImage == Assets.ButtonShortUpImage
                       Entity.DownImage == Assets.ButtonShortDownImage
                       Entity.Visible <== model --> fun model ->
                          model.SubmenuModel.SubmenuState = SubmenuClosed &&
                          Option.isNone model.DialogOpt &&
  
negative.code: 
                   // interact button
                   Content.button Simulants.FieldInteract.Name
                      [Entity.Position == v2 248.0f -240.0f; Entity.Depth == Constants.Field.GuiDepth; Entity.Size == v2 192.0f 64.0f
                       Entity.UpImage == Assets.ButtonShortUpImage; Entity.DownImage == Assets.ButtonShortDownImage
                       Entity.Visible <== model ->> fun model world ->
                          model.SubmenuModel.SubmenuState = SubmenuClosed &&
                          Option.isNone model.ShopModelOpt &&
  