anchor.diff:  ﻿namespace ShootingWebSharper
   
  +open System.Net
   open IntelliFactory.WebSharper
   open IntelliFactory.WebSharper.Html
   open IntelliFactory.WebSharper.Html5
  +open IntelliFactory.WebSharper.JQuery
   
   module ShootingGame =
  +
  +  type PlayerShip = {
  +    x : float
  +    y : float
  +  }
   
     [<JavaScript>]
     let width = 300
  
positive.code:     ctx.Fill()
  
    [<JavaScript>]
    let animatedCanvas width height =
  
      // キャンバスの設定
      let element = Tags.NewTag "Canvas" []
  
negative.code:     let rec loop =
        async {
          do drawBackground ctx
          do drawPlayerShip ctx !playerShip
          do! Async.Sleep (1000 / fps)
          do! loop
        }
  