No text, but a visual code

[Antonio García Jiménez]

You are right VViews. The illustrator made up a pseudo-language inscription. This is why I find a possible source of inspiration for the VM script.
  The illustrator of Mandeville travels is contemporary with the author of the VM, he shares his same culture. For them, astronomy is an ancient science written in a mysterious language with an alphabet of magic signs. This is the underlying idea that could lead the author of the VM to invent an original astronomical code.