Editing Splines
To edit a spline
- From the Modify menu, choose Object>Spline.
- Select the spline to modify.
- At the Command prompt, edit the spline by choosing one or more of the following options:
- Enter f (Fit) to edit the fit data that defines the spline.
- Enter c (Close) to change an open spline into a continuous, closed loop.
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Enter m (Move Vertex) to move a fit point to a new location.
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Enter r (Refine) to modify a spline definition by adding and weighting control points, and elevating the order of the spline.
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Enter e (Reverse) to reverse the direction of the spline.
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Enter u (Undo) to cancel the last editing action.
- Enter x (Exit) to end the command.
Modify toolbar: 
Command line equivalent: SPLINEDIT