2013

 Tangent arrow grip. Changes the magnitude of the tangent at the base point.
For example, lengthening the tangent arrow grip flattens the curvature of
the surface at the point of tangency. The tangent arrow points in the
direction of one of the surface’s U, V, or W axes, depending on the tangent
direction specified in
3D Edit Bar Shortcut Menu (page 29).
3D Commands | 27