It has to do with a treaty, or some such words. I believe it is the Warsaw treaty. It addresses how much you get if you are made dead on the plane, how much you are reimbursed if your luggage is dissapeared, etc. It deals with how much baggage you can check. "2 pc" 2 x 32kg each with a total l,w,h dimension of whatever 64 inches is in meters.
I do not know what countries are a party to this agreement, and where it applies, other than transatlantic travel to/from the USA.
[This message has been edited by slawecki (edited November 11, 2003).]