Might be a little machine doubling. This isn't considered an error and has no additional value. Go to www.doubleddie.com and click on the worthless doubling tab for an explanation. If you plan to search for errors, you'll run across lots of MD, so it helps if you know how to identify it
John, the poll isn't required , just available if you really want it, otherwise skip it, as some feel they have to click it. Jim