Used to remove an existing pair of control points from the control points list box.

When the identified point is accepted, both marks that belong to this pair are deleted and the corresponding line is removed from the list box. The rest of the list is renumbered. If Dynamic Warping in Views Displaying Uncorrected Data is on, the model updates and the base vector data warping refreshes in the specified views.

After a model is updated, the distance between the two corresponding marks reflects the residual for this pair of control points. As long as there are no extra points, the model is exact, i.e., there is no residual. Consequently, the two corresponding marks of each pair coincide.