The 64 nodes*.dat files in gta3.img (or any other archive) contain the vehicle and ped paths and related information for GTA SA. There is a file for every 750×750 unit square, starting at the south-west corner (-3000, -3000) in row-major order. However, paths for planes and trains are not stored in the node-files. Nodes can only be influenced through SCM using the opcodes 01EB and 03DE. Trains use paths in the tracks(1-4).dat and there are also paths for several missions and concrete cars. These paths are carrecs.