Share Email Facebook Twitter LinkedIn To Reverse Lines, Polylines, Splines, or Helixes Click Drafting tab > Modify panel > Reverse. Note: Hidden by default. Click to display the icon on the tool set panel. Select a line, polyline, spline, or helix to reverse. Press Enter to end the command. Related Concepts About PolylinesAbout Modifying Splines Related Reference Commands for Editing Specific Objects