Angles of the 4 lines on the last page: the top line is a separate thought?(!)

[addekallstrom]

As you can see on the picture below, the top line is about as flat/straight of an angle as you would expect from someone writing by hand, it is essentially perfect.
The bottom three lines, all of them, are arched, almost vaulted, rising upwards towards the middle of the page before falling downwards again.

I'm not sure any conclusions can be made from this.

1) The first line is right next to the edge of the folio, the edge could serve as a good visual aid.
2) The folio is damaged and it's quite possible the vellum has shrunk in places, the bottom three lines could have been much straighter initially.
3) The top line is very short, it's much easier to keep a short inscription perfectly level, compared to a line that goes across the whole folio.

What I would say is:
1. The aid which the edge of a folio gives does not explain both the dramatic shift in how much the angles change. Line 2 is only about 2-3 centimeters below line 1, and yet almost all of "anchiton" would fit below "multos". 
2.  Could be, but I would like to point out that the change within the three lines is almost identical, and yet a shrinkage has had no apparent impact on the first line. I measured it with the ruler in the Windows snapshot tool where the gap is the largest, right round the + in line 1 and the a in abia and a in gasmich, and they were 7mm, 8mm, and 6mm respectively. So they have the same shift, and the top line has essentially 0mm shift.
3. By the end of the first line, all other three lines have already drastically shifted, so it is long enough.

You could have a point on your second argument, but I browsing through the pages I cannot find any other pages in the VM where the topmost line is perfect and just 2-3 centimeters down the line of the text is completely distorted due to shrinkage. 

On the whole, I'd say it is far more likely that two different sets of thoughts are communicated: line 1 and lines 2-4. By the same person, or by someone else. I don't remember Koen saying it in his video but that he sort of a posterio assumed that it is all connected, and I guess that's what I'm trying to argue against.

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Hi addekallstrom.
there is a loose single quote after your image code. Also that image code does not look like a forum image attachment id.
Choose 'edit post' > "full edit"and there should be a box at the bottom where you can upload an image to the forum.

As to the top line being written at a different time, totally possible , as you say the top line is straight and the other lines have a pronounced curve,
there is also a big space between the top line and the second line.

Thank you, I got it to work!