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

[ReneZ]

One observation of Currier was: "The ends of the lines contain  ... little groups of letters which don't occur anywhere else, and just look as if they were added to fill out the line to the margin"

Indeed, but until this day it is not clear to me what he meant, or what he saw.
The two characters that seem to fill this role are Eva-m and Eva-g, but they don't appear in little groups, and they also occur elsewhere.