File saved in the MicroBraille (BRL) format; encodes contracted braille characters (Grade 2 Braille) in braille ASCII, which uses 64 characters from the ASCII character set to represent dot combinations in six-dot braille; can be read by software that supports braille to speech functionality or braille embossers used for printing.

Similar to the more common .BRF file extension. BRL and BRF files are commonly used for making digital publications available to those who are blind. To create a BRL file in CASC Braille 2000, select New → Braille File, name the file, select "MicroBraille File (brl)" from the file type drop down menu, and click OK. To open a BRL file in CASC Braille 2000, select Open → Braille File, navigate to the file, and click Open. NOTE: Duxbury MegaDots has been discontinued.