2009

Align to U Aligns the local Z axis of the controlled object with the surface
normal of the surface object, and the X axis with the U axis of the surface
object.
Align to V Aligns the local Z axis of the controlled object with the surface
normal of the surface object, and the X axis is aligned with the V axis of the
surface object.
Flip Flips the alignment of the local Z axis of the controlled object. This check
box is not available if No Alignment is turned on.
Path Constraint
Animation menu > Constraints > Path Constraint
Path constraint positions the service platform along the side of the bridge.
A path constraint restricts an object's movement along a spline or at an
averaged distance between multiple splines.
A path target can be any type of spline. The spline curve (target) defines a path
of motion for the constrained object. Targets can be animated using any of
Path Constraint | 3297