Cone <height> <radius> <sides>
This command creates a cone of the given dimensions in the current clump. The cone is transformed by the current transformation matrix and its surface is assigned the current material.
The radius can be either positive or negative. It cannot be zero. A negative radius creates a cone that is "inside out" (i.e. only visible from the inside). The number of sides must be greater than two.
<height> the height of the cone
<radius> the radius of the base of the cone
<sides> the number of sides of the cone