1773 AppleSingle 2 Apple Computers created the AppleSingle format (as well as the AppleDouble format) to represent and preserve the attributes of files across files systems that do not support the same attributes of the file’s home systems. AppleSingle is primarily a storage format and contains both a file’s contents and attributes. It consists of a header and one or more optional data entries followed by the byte stream of the file it is storing. It maintains the original Macintosh filename and file type (e.g. Mydoc.pdf). The AppleSingle format can store a number of different kinds of formats. 1 Digital Preservation Department / The National Archives 21 Sep 2016 29 Jul 2022 application/applefile MIME fmt/968 PUID as File extension 1332 AppleSingle v2 BOF: 4 byte AppleSingle Magic Number 0x00051600, then 4 byte version number 0x00020000 1 Absolute from BOF 0 0 0005160000020000 Is subsequent version of 1772 AppleSingle