The "Domain" window shows a gray wireframe domain.  In this domain are also shown curves in the r, theta, and z directions colored red, green, and blue respectively.  These curves are determined by the location of the cyan hotspot.

The windows "Graph of Z-Slice Curve", "Graph of R-Slice Curve", and "Graph of Theta-Slice Curve" plot the mentioned variables versus the value of the function along the specified lines in the domain window.

The "All Slice Curves" window shows the same curves that were shown in the domain but here are shown colored according to the values of the function.