I would also conjecture that the second column of the marginal table (of glyphs) was written first, followed by the third column (as a first attempt at a key). And then the partial fourth column and finally the first column.
The first column just appears to be far to close to the main script for the writer to have started there. But this would raise other questions as to the choice of placements.
The first column just appears to be far to close to the main script for the writer to have started there. But this would raise other questions as to the choice of placements.