anchor.diff:  #if DEBUG
           let population = 1
   #else
  -        let population = 50
  +        let population = 45
   #endif
  -        let spread = 20.0f
  +        let spread = 22.0f
           let offset = v3Dup spread * single population * 0.5f
           let positions = List ()
           for i in 0 .. population do
  
positive.code:                     [Entity.CubeMap == Assets.Default.SkyBoxMap]
                   Content.staticModelSurface Gen.name
                      [Entity.SurfaceIndex == 0
                       Entity.StaticModel <== field --|> fun field world -> snd (Field.getFieldHeightMapAndStaticModel field world)
                       Entity.RenderStyle == Forward 0.0f]
                   Content.staticModelSurface Gen.name
                      [Entity.SurfaceIndex == 1
                       Entity.StaticModel <== field --|> fun field world -> snd (Field.getFieldHeightMapAndStaticModel field world)
                       Entity.RenderStyle == Forward -1.0f]]]]
  
      // here we create the scenery in an imperative fashion
  
negative.code:         private
              { FieldTileMap : TileMap AssetTag }
  
      let getFieldStaticModelAndHeightMap (field : Field) world =
          let fieldModelAssetTag = asset field.FieldTileMap.PackageName (field.FieldTileMap.AssetName + "Model")
          match CachedDescriptors.TryGetValue fieldModelAssetTag with
          | (false, _) ->
  