Display modes: VGA, VESA, Super VGA and undocumented -- Selecting colors with an octree -- Displaying TGA files -- Displaying four pictures on a single screen -- Saving and restoring .PCX files -- The vector class -- Ray tracing language description -- processing objects with object-oriented programming -- Ray tracing -- Spheres -- Planes and polygons -- Boxes -- Rings and circles -- Quadric shapes, cones, and cylinders -- Constructive solid geometry -- Textures and surfaces -- The ray tracing program -- Animation -- Using pictures from Kodak CD-ROMs.