Section views provide an understandable representation of hidden or complicated parts of 3D models. A section is technically an orthographic projection of a 3D object from the position of a plane through the object. This produces a view which shows what would be seen if one cut through the model and looked at what was cut. The image of the kiwifruit (Figure 5) provides a good example of sections. The kiwifruit is cut and rotated until the cut face is shown to the viewer. An example section is shown in Figure 6.
Sections like this show structural features not externally visible, or not clearly visible. The style of crosshatching indicates the type of material the section passes through.