Creates free curve copies of free curves, curves-on-surface, trim edges, or isoparametric curves.
The Duplicate curve tool duplicates any curves that are picked when you click the tool, and any curves you click while the tool is active.
The new curve occupies the same space as the original, so in many cases you will not actually see the separate curves until you move one of them.
Because they use different mathematical representations, free curves duplicated from curves-on-surface and trim edges are only close approximations of the originals.
Curves duplicated from curves-on-surface or trim edges can be very complex (many spans).
To reduce the number of spans in the duplicated curve, do one of the following: