anchor.diff:  //    member val OperatingSystem = os with get, set
       
       /// ID of computer in local network                                    ????????????????????????????????????????
  -    member val ID = 0 with get
  +    member val ID = id with get
       
       /// checks the health of computer
  -    member comp.IsInfected () = isInfected;
  +    member this.IsInfected () = isInfected;
       
       /// simulates a viral attack on the computer
  -    member comp.Infect damagePoint =
  +    member this.Infect damagePoint =
           if damagePoint >= healthPoints then
               isInfected <- true
   
  
positive.code:             else "healthy"
          Seq.iter (fun x -> fontColor x
                             System.Console.WriteLine("computer number " + x.ID.ToString () + " is " + (health x))) computers
  
  //    member IsUnHealthy () =
  //        Seq
  
negative.code: //            }
  //        }
  //
  
  //    }
  //}