I've been doing a lot of work on a 3d Qmap kind of educational thing but I noticed today Drudge had this linked and my eye just goes straight to the A-B - well, I have dug up plenty on the letter codes they use, A-B B-A AA BB CC VV TT William/Mc/Theodore/win/Al/ and about a dozen more that each have peculiar meanings… and I need to check this board to see if anyone else has been working on those codes - I've been cracking them for months but I kind of do things solo and get in my own little world so I'm not sure if people know some of the nuances I do. I'll check before I make a cheat sheet, don't want to give redundant info or contrary info without properly making sure other people aren't more right than I am.