I second this. Also, consider using instead of lines (or in addition to) an alternating pattern of white and light grey for the background. I love subtle grey/​white background alternations for guiding the eye straight across a bunch of columns.
I second this. Also, consider using instead of lines (or in addition to) an alternating pattern of white and light grey for the background. I love subtle grey/​white background alternations for guiding the eye straight across a bunch of columns.