14. A method according to claim 11 , wherein the shape defined in the display comprises at least two concentric circles and the unique spine groups are placed around an innermost circle of the concentric circles.
14. A method according to claim 11 , wherein the shape defined in the display comprises at least two concentric circles and the unique spine groups are placed around an innermost circle of the concentric circles. 15. A method according to claim 14 , further comprising: positioning the selected spine group at a radius of the innermost circle at an angle of the unique spine group that is most similar.