Hi Sue, When proofreading scanned books you will often see certain characters that don't belong. It usually happens at the ends of the lines of the printed book, but since those line breaks usually aren't kept they may be in the middle of lines. Some of the most common characters are l, i, 1, t, f, j, |, and ^. Once you've validated a few books you'll get used to them and feel more comfortable recognizing and eliminating these. Kellie