public String toString()
  {
    String str = "Step: [" + this.Type + ",";
    if (this.Argument1 != null)
      str = str + this.Argument1 + ",";
    if (this.Argument2 != null)
      str = str + this.Argument2 + ",";
    if (this.Point1 != null)
      str = str + this.Point1 + ",";
    str = str + this.Number1 + ",Delay=" + this.Delay + "]";

    return str;
  }