This is a modding system designed to let the maximum number of players possible create things for the game. Now this MMORPG is much more interactive/detailed than most (or all?) and objects will act more the way they would in the real world (hence all the hidden data defined by expert creators) -- that painting you could throw at somebody, or you could trash it by stomping on it or you could paint some more on it to modify it. ALL the objects are define with real attributes to make them behave correctly when manipulated, and 'damage' is a big aspect of THIS game, after all, so repairing things is also a big part of the game.