This is one of the modes which can be selected in the Model Modes submenu in the Display menu, or in the Dialog Bar - Left.
This model mode supports ball-and-stick and coordination polyhedra, which may be intermixed in various ways. It does not support drawing atoms as thermal ellipsoids.
The representation in this model mode can be shown with either the 2D or 3D Drawing modes, and either as single objects or stereopairs.
This mode is actually very flexible, and supports representations ranging from very schematic line drawings to fully three-dimensional. The settings in the Rims, Linewidths, and Shading commands in the Input2 menu have an especially great influence on this mode.