After drawing splines, a Spines spline layer is added to the Layer Control panel, Select the Splines layer then LMC on a spline in the workspace, it will be highlighted in red. Next, RMC on that spline to display options as shown in 2137882676.
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Copy Splines: Selecting this option will copy that spline to other splines another spline layer. After selecting this option, the Select Layer form will pop up as shown in 2137882676. From the drop-down list, we can select <New Layer> or an available splines layer there.
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