Extend and trim curves to meet at their endpoints.
Lengthen a curve.
Lengthen a curve with an arc keeping radius.
Lengthen a curve with an arc from center.
Lengthen a curve with an arc to a point.
Lengthen a curve with a line.
Lengthen a curve smoothly.
Lengthen a curve to a boundary curve or edge.
Lengthen a curve on a surface to the surface edges.
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