BRF
From Just Solve the File Format Problem
Braille text in ASCII form for computerized transmission, using various ASCII characters to represent the Braille symbols. The files will generally look like gibberish to those unfamiliar with the format (with some familiar letters surrounded by other symbols that aren't so familiar), but since only normal ASCII characters are used the file can be transmitted just like any text file, not requiring any special binary handling. Developed by Duxbury Systems in the 1980's for the DOS version of DBT.
BRF is a format for saving