File Format Definition A file format defines the structure and type of data stored in a file. The structure of a typical file may include a header, metadata, saved content, and an end-of-file (EOF) marker. The data stored in the file depends on the purpose of the file format. Some files, such as XML files, are used to store lists of items, while others, such as JPEG image files simply contain a block of data. A file format also defines whether the data is stored in a plain text or binary...