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• You can constrain the control point tangents as well as interpolation point tangents. • You can use Horizontal and Vertical for all the constraints, that is, for G1 - Surface Tangent, G2 - Surface Curvature, G3 - Surface Acceleration, and Draft Tangent. • You can use the secondary constraint Normal only if the reference plane normal lies in the tangent plane. • You can use the secondary constraint Align only if the curve tangent for the curve selected for alignment lies in the tangent plane. • You can use Normal to Edge/Curve, Along U, and Along V when the primary constraint is G1 - Surface Tangent, G2 - Surface Curvature, or G3 - Surface Acceleration. • You cannot use the secondary constraints Align, Normal, Normal to Edge/Curve, Along U, or Along V for Draft Tangent. |