corkscrew_plot3d():
  MATLAB/Octave version 11.3.0
  Define (X,Y,Z) data on a 3D curve.
  Create corresponding gnuplot() input files.
  Created data file "corkscrew_data.txt"

  Plot commands stored in 'corkscrew_commands.txt'.

corkscrew_plot3d():
  Normal end of execution.