A curve in space, kept as a chain of short straight pieces.
Where the curve begins.
Where the curve ends.
The curve's unit direction at its start.
The curve's unit direction at its end.
Unit vector along the straight chord from start to end.
Length measured along the curve.
The center of the curve's bounding box.
The axis-aligned extent of the curve.
Distance to the curve as a field, zero on the curve; give it volume with Thicken Surface.
At each point, how far along the curve its nearest curve point lies (computed on the CPU only).
True when the curve's end meets its start.
The display name of the node that made the curve.
The same curve, running from end to start.
Items that are each a Curve. One Curve wired where a list is taken counts as a list of one. A list wired where one Curve is taken runs the block once per item.