Cipher or unknown language - historical perspective

[oshfdk]

These close-ups all seem to show disturbances during lining or drying, just as "stumbling" over some vellum roughnesses and forced resetting, or spots were the ink was not properly or evenly absorbed by the material.

This has nothing to do with the basic concept of letters to be drawn in one single line, which applies to nearly all VMS characters.

I think these close ups show consistent gaps at the same part of the glyph which to me suggest that most glyphs were executed in two or more strokes. Could you clarify where the idea that letters were drawn in on single line comes from? I don't think I've seen any evidence of this.