The illustrations of various pages from the BoS throughout the story allow us to make comparisons with the full size pages.

The small illustration does not have the light ink splatters on and around the word "This" near the sun.
Does that mean they are a more recent addition to the page (although the faded colour suggests age)?
Perhaps they represent the growth of mold.
Our attention might be drawn to "this" or to the arrangement of the good apples.