Ink/pen dynamics and the rhythms of writing

[Bernd]

I'd like to hear Lisa's opinion on this.
Many of the marginalia letters are strangely ambiguous as if the scribe himself was unsure what to write or changes his mind half-way. I this common in pen tests?

There is some evidence of a correlation between similarities in imagery and scribal hands meaning scribes also drew the respective images but we should investigate this further. The story is probably more complicated, a always.