Disc <height> <radius> <sides>
This command creates a disc of the given dimensions in the current clump. The disc is transformed by the current transformation matrix and its surface is assigned the current material.
A disc is a flat (i.e. two-dimensional) circle which is often used to "cap" the ends of cones and cylinders.
The radius can be either positive or negative. It cannot be zero. A negative radius create a disc that faces downwards. The number of sides must be greater than two.
The height of the disc determines how far it is displaced up the Y axis. It is usually set to zero.
<height> the vertical displacement of the disc
<radius> the radius of the disc
<sides> the number of sides of the disc