Paths in GTA IV are similar to the 64 node-files introduced with San Andreas. Like the first version of the format there are 64 node files where each file corresponds to a 750x750 square unit starting with nodes0.nod in the south-west corner (-3000.0, -3000.0) and ending in the north-east corner (3000.0, 3000.0) of the game's world in row-major order.