ABCDEFGHI...OPQ on the first page

[Koen G]

Those letters have been noticed before - if I recall correctly, JKP wrote a post about it as well but I can't access his site at the moment. He's also pretty good with photoshop so I think his post will give them the best possible shot.

To be honest I have never given this much thought. To me it looks like someone else wrote this in an attempt to crack the "code" and then tried to erase his notes. But who knows...

Edit: Anton beat me too it