OK I think J is the same but not quite. Here it is in version 8.2
The little checker board turns your checkerboard on the screen off and on. Mine does not have a drop down arrow as shown on the assignment page. The next 3 items going to the right are for placing pictures of a backdrop to model from, like a blueprint of something. You get the option of placing a sideview, a top view and an end view. Then there is a divider for the next section. It contains 3 items, the shaded square is Show Atmosphere, when I click it the screen goes black so I assume you have to set an atmosphere up somewhere. Next is SHow Background Image, this toggles your side, front or end images on and off. The 3rd button that looks like two blocks turns on Shadows in the scene. If you place a cube on the screen and click it you get a nice shadow behind the cube. The next button is in it's own section for some reason and all it does is toggle the title bar on the 3D Canvas window off and on. Click it and you get alittle more viewing area. The rest of the toolbar is a Camera to take a snapshot and the little question mark looking thing is to Render with POV Ray. I have no idea what that even means POV Ray?? I am a newbie for sure.
The last item is Properties and Information. When you move the mouse over it a window pops up, if you click it the window stays open and I beleive this should be seperate part as there are lots of things in there.