
 cs=GrayLevel=90..104..120  should work
 cs=104: 84 boxes = 53 chars + 20 holes + 3 miniholes + 4 dots_above + 4 dust
 1 white pixel

<text>
 This  is  a handwritten
 example  for  GOCR.
 Write  as good as  you can.
</text>
