What Has to be in WoW Data Folder?

[tockle]

I have "common" "eula" "expansion" "tos" and just plain "patch"

do all these have to be in there?

[taiya]

well i dont have eula and toc, but i have everything else and patch-2. I wouldnt remove them though

[ti0r]

I've "scan" Firefox document in my data folder, in the subfolder enGB there is AccountBilling, connenction-help, eula, tos, TechSupport, termination, credits and credits_BC (all firefox documents).

Would love to know what they are meaning (could imagine "scan is Wardens document and so on)