It's a translation thing... The 'hemmed' areas refer to the boxes at the edges (the 'hem') which are the repeats. After you finish row 40, start over again at row 11 and the stitches inside the boxes would be repeated on each side of the 6 center stitches. That's what it's supposed to mean, the thing is, you won't be repeating the 2 edge sts and yo at the beg and end of the row, so it's more like you repeat the stitches between the boxes.
sue- knitting heretic