Double Spacing

  The Double Spacing button controls whether the print job
  output is double-spaced.  When this button is turned on, a
  blank line will be inserted on the printout after each line in
  the file.

  To use the Double Spacing option:

  1.  Move the pointer to the Double Spacing button.

  2.  Click MB1 on the button.  When turned on, the button
      becomes highlighted.

  3.  Click on the OK button.

  Off is the default setting.