Doc talk:2.6/Manual/Constraints/Tracking/Damped Track

[29 Sep 2012:] Could we/should we add something describing the difference between this and the other "Track To" constraint? I can see by looking at the options available to them that the "Track To" constraint allows you to specify the "UP" direction for the constraint, but I can't quite understand how that leads to different behavior for the "Damped Track To" Constraint.