This is just a picture of that little box, so it's going to turn out it goes from, the pink line goes from here to here and the blue line goes from here to here.

这是那个小方格的放大图,这些线如图所示,粉色的线从这一点到这一点,蓝色的线从这一点到这一点

耶鲁公开课 - 博弈论课程节选