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The db&w Splines support animation since the October release of the db&w Tools. Initially, individual points (knots, control points, up vectors) may be animated using key frames or by following other items in the scene.
By default, when creating a spline, all points are static. Their position may be edited at any frame.
The type of point may be changed using the Context Menu 1) while a point is selected or by changing it in the editor panel.
Enveloped points can be animated by using the Spline Editor or the envelopes in the Graph Editor.
The Spline Editor uses Layout's Auto Key settings when the points are edited: