1226 BSDIFF 4.0 A binary source patch file containing differences to be applied to a source binary in order to create a target binary file. As only the delta is stored and BZIP2 compression is used, this format provides an efficient means of applying patches to binary files. Binary 1 Digital Preservation Department / The National Archives 11 Jun 2012 11 Jun 2012 fmt/439 PUID bsdiff File extension 672 BSDIFF4.0 1 Absolute from BOF 0 0 4253444946463430{24}425A68??314159265359