The only W&W Editor was the work of Frederic. He may not have been able to decrypt the Trait area. You could try contacting him at the address given in the Editor readme file:
frederic@iname.com
I personally can't program or compile that well. If he still has his source code handy from 2001&&
Edit: explanation of the term "binary sum", this example is taken from folder: “save-ww”, file: “game00.sav” as downloaded from this web page:
http://www.tk421.net/wizardry/files.shtml.
Opening the file in Hexplorer we find that character 4,947,276 seems to be the start of the entry for the PC Johne. Hence place 401 is at 4,947,676: it has a decimal value of 76. In binary 76 = 1001100
The first group of eight traits is numbered as follows:
1: War Cry, 2: Giant Strike, 4: Ironmight, 8: Fury, 16: Spellfire, 32: Guardian Ward, 64: Sneak, 128: Hawk's Brow
Thus 76 = 64 + 8 + 4, hence this PC has traits Ironmight, Fury and Sneak.