It doesn't matter. Either the scribe works around the drawings, or s/he needs to leave spaces where the illustrations will go. Either way, it's the same result. Sometimes words are split by drawings similar to examples at lines' ends.
My examples were intended to demonstrate the wide variety of prior sources showing text in circular bands. Not all bands are filled with words. So what? What is so special about circular text in "closed segments"? It's just a matter of the quantity of words, not something that is qualitatively different. And a bit of 'practice' perhaps. When the space is filled, just quit and move on.
Scribal hand #4 in the VMs Zodiac sequence had no problem in creating closed text segments, - with the exception of three examples: White Aries (2) and Cancer (1). That's another investigation.
My examples were intended to demonstrate the wide variety of prior sources showing text in circular bands. Not all bands are filled with words. So what? What is so special about circular text in "closed segments"? It's just a matter of the quantity of words, not something that is qualitatively different. And a bit of 'practice' perhaps. When the space is filled, just quit and move on.
Scribal hand #4 in the VMs Zodiac sequence had no problem in creating closed text segments, - with the exception of three examples: White Aries (2) and Cancer (1). That's another investigation.