Click in the picture to get it focused and then ...

Press p/P to render in Phong shading.

Press g/G to render in Gouraud shading.

Press w/W to render in Wireframe.

Press s/S to render in Specular Phong shading.

When "Scene" or "Object" buttons is down, dragging will rotate the picture.

When "Camera" buttons is down, dragging will move the camera.

When "Light" buttons is down, dragging will move the light.

Click "Antialias" to switch it on (antialias=2) or off (antialias=1).

Antialiasing is only used in Gouraud shading.

Click "Magnify" and drag the picture to see details of the pixels.

"Magnify" can be good tool if you want to see detailed effect of antialiasing.