Most are compromises; many work against one another

1. Curves should be simple closed curves: link
2. Curves should be smooth:  link
3. Curves should be convex: link
4. Few intersections between any pair of curves: link
5. Few curves should meet at a given point: link
6. Intersections:   should be far apart;
                             angles should be high,
                             regions should be large: link
7. Markings should show “family traits” and individuality:
   link and link

David Dailey
Slippery Rock University