CHAPTER 8 BAR CODE CONTROL - 6 
n = "s1" or "S1"  2 : 1 
n = "s3" or "S3"  2.5 : 1 
This parameter selects the bar code style as above.    When the EAN 8, EAN 13 or UPC-A bar code mode is 
selected, this bar code style parameter is ignored.     
 Expanded Character shading 
"S"  0 = White 
  1 = Black 
  2 = Vertical stripes 
  3 = Horizontal stripes 
  4 = Cross hatch 
e.g.  "S" n1 n2 
    n1 = Background fill pattern 
    n2 = Foreground fill pattern 
  If "S" is followed by only one parameter, the parameter is a foreground fill pattern.