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On the Draw toolbar, select Curve Command
to open the Curve Ribbon.
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Do one of the following:
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To draw an open curve, set the Curve Type box on the ribbon to Open.
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To draw a closed curve, set the Curve Type box on the ribbon to Closed.
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Select three or more points on the drawing sheet. These points represent nodes on the curve.
You must place at least three points to draw a curve.
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Right-click to end the curve.
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You can drag the pointer to draw the shape of a curve. Instead of selecting several different points to draw a curve, you can draw a diagonal line and the software automatically changes it to a curve.
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The nodes at the start point and end point of a curve are always smooth.
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You can use Insert Node on the shortcut menu to add nodes to a curve.
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You can use Delete Node on the shortcut menu to delete nodes from a curve.