move this to rigid unit mode

"A rigid three-dimensional object has 6 degrees of freedom, 3 translations and 3 rotations." This is true for a free, broad object, but not for a bound atom; its six comes from three cinetic and three potential degrees. -lysdexia 16:06, 6 October 2007 (UTC) —Preceding unsigned comment added by 68.123.4.253 (talk)