Command entry: Create panel (Shapes) Point Curve button In viewports, draw a point curve and click to create a point in the same location as the first point in the curve.
Command entry: Modify panel Select a NURBS object. NURBS toolbox (Create Point Curve) In viewports, draw a point curve sub-object and click to create a point in the same location as the first point in the curve.
This dialog lets you create a closed point curve when you click to create a point in the same location as the curve's first
point.
Interface
Yes
Closes the curve and ends curve creation.
No
Keeps the curve open and does not end curve creation.