For more information on Breakdowns, see Breakdowns.
Opens the Set Breakdown Options window.
Sets breakdowns on the control points of the selected objects. Control points are NURBS CVs, polygonal vertices, or lattice points. Be aware that if Control Points is on and you add breakdowns to an object with many control points, such as a complex NURBS surface, you’ll set a large number of breakdowns. This slows Maya operation. If you also set Hierarchy to Below, you might slow Maya operation even more. Turn on these options only when necessary.
If you delete the construction history of an object with CVs that have breakdowns or keys, the animation will no longer work correctly.