Editing Fat binary (section)

====Mach-O and Mac OS X====
Apple Computer acquired NeXT in 1996 and continued to work with the OPENSTEP code. Mach-O became the native object file format in Apple's free [[Darwin (operating system)|Darwin operating system]] (2000) and Apple's [[Mac OS X]] (2001), and NeXT's Multi-Architecture Binaries continued to be supported by the operating system. Under Mac OS X, Multi-Architecture Binaries can be used to support multiple variants of an architecture, for instance to have different versions of [[32-bit]] code optimized for the [[PowerPC G3]], [[PowerPC G4]], and [[PowerPC 970]] generations of processors. It can also be used to support multiple architectures, such as 32-bit and [[64-bit]] PowerPC, or PowerPC and [[x86]], or [[x86-64]] and [[AArch64|ARM64]].<ref name="Universal Binary"/>