In the video, a person is seen drawing on a white paper with a blue marker. The person starts by drawing a square and then adds a rectangle next to it. They then draw an arrow pointing from the rectangle to the square. Next, the person writes "WAN" inside the square and "LR" inside the rectangle. They then draw a line from the rectangle to the square and write "LR" inside the square. Finally, the person writes "WAN" inside the rectangle.