[split] Line padding, layout, Currier's "groups of letters"...

[-JKP-]

I think it's quite possible that lines were "padded" (right-justified/double-justified).

f81r is not right-justified and stands out quite starkly as different, especially when its mate f81v (which is formatted with the same kind of drawing and looks like it was intended to be associated with f81r) has been double-justified.

This is a topic that probably needs its own thread.