8.3 convention
The "8.3 convention" refers to a file naming system used in older operating systems, particularly in MS-DOS and early versions of Windows. It limits filenames to a maximum of eight characters, followed by a three-character file extension. This format was designed to ensure compatibility with various software and hardware that could not handle longer names.
Under the 8.3 convention, a typical filename might look like "example.txt," where "example" is the name and "txt" indicates the file type. While modern systems support longer filenames, the 8.3 convention remains relevant for compatibility with legacy systems and certain applications.