Used to move an existing control point mark.

The line in the list box corresponding to the modified control point is now selected (highlighted) and is rewritten with the adjusted coordinates. 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 indicates the residual for this pair of control points. As long as there is no extra point, the model is exact, i.e., there is no residual. Consequently, the two corresponding marks of each pair coincide.