Ethanol is a widely available alternative fuel that can be used in many vehicles that are already on the road, but is it cost-effective to use ethanol or an ethanol/gasoline blend in place of unblended gasoline?
OBJ (or .OBJ) is a geometry definition file format first developed by Wavefront Technologies for its Advanced Visualizer animation package.The file format is open and has been adopted by other 3D graphics application vendors. For the most part it is a universally accepted format.TL files are commonly accompanied by and referenced from OBJ files that define geometry upon which the materials of the MTL file are mapped. The MTL format, although still widely used, is outdated and does not fully support later technologies such as specular maps and parallax maps.
RE: how to open an obj file? Given the extent to which modern compilers optimize emitted code to make best use of registers, do loop unrolling, consolidate expressions, etc., it would be exceedingly difficult and for all practical purposes impossible to determine exactly what the source code looked like.