Editing Splines
Modifies the spline’s angle of inclination relative to the X, Y, or Z (3D splines) axis...To edit 2d or 3D splines...As you drag the spline point, the value for X Coordinate , Y Coordinate , and Z Coordinate (3D splines) changes
Sketching > Splines
Creating 2D Splines
. Multi-point spline Simplified spline Creating 3D Splines Relations with Splines Adding controls ...