BNS
What is B in a file?
B (BASIC Source Code File)
B files contain markup language written in BASIC (Beginner's All-Purpose Instruction Code), a popular programming language. The files are typically saved in a plain-text format.
What is a 000 file?
A file with the 000 file extension is most likely an Indexing Service Data file used to store file locations so that the Windows operating system can perform file searches. ... Microsoft DoubleSpace (later renamed DriveSpace) was a compression utility used in the old MS-DOS operating system.