The "Domain" window allows you to choose a section of the domain to highlight in the graph. It displays a horizontal line and a magenta segment that can be specified by choosing a yellow center and a green endpoint, either on the right or the left.

The "t, y(t)" window graphs y(t) as a function of t with the magenta curve, and green and yellow points corresponding to those in the "Domain" window.

The "t, x(t)" window shows the graph of x(t) as a function of t including the image of the magenta interval and the green and yellow points corresponding to those chosen in the "Domain" window.

The "Range" window shows the parametric curve (x(t),y(t)) including the image of the magenta interval and the and green and yellow points corresponding to those in the "Domain" window. The "Range" window is a 3D window showing the graph of the curve (x(t),y(t),t). If we look down the z-axis, we get the parametric curve in the x-y-plane. If we look down the y-axis, we get the graph (x(t),t), a reflection of the graph (t,x(t)), and similarly if we look down the x-axis, we get the reflected image of the graph (t,y(t)).