The "cyl_head" file contains a 3D solid model of an automobile engine's cylinder head. The test reflects a typical 3D mechanical CAD application. The cylinder head is rotated, translated and zoomed in on during the test. It is composed of 3,621 3D polygons and 32 3D fill-area sets. There is an average of 4.8 vertices per polygon. The fill-area sets have an average of 55.7 vertices and 2.7 contours per frame. There are 225 frames displayed in this test. All colors in this file are true color (RGB) values and all polygons are Gouraud shaded. There are three light sources, which use ambient, diffuse and specular light components.