Selecting a small picture will enlarge it.
The twist is visible at the right.
The twist has been rotated straight ahead, to the front.
Color is assigned according to u parameter. The twist is visible at the right.
The twist is visible at the lower left.
Comments to: firstname.lastname@example.org
Created: Jul 6 1995 ---- Last modified: Fri Aug 11 17:32:13 1995
Copyright © 1995 by The Geometry Center, all rights reserved