Duxbury Systems first used the .brf file format in their software before 1980. In the CP/M and DOS versions of their software, the developed a two pass process in converting the text to braille. First, the text file was converted into unformatted braille, processing contractions and such from a look-up table. Then it was formatted into literary braille format and the extension .brf appended to the filename so that the transcriber would know that is the finished file. Since they have switched to Windows, the process is different and the file extension is different as well. Other companies followed suit with the extension. Francis -- To post a message to the list, send it to jfw@xxxxxxxxxxxxx To unsubscribe from this mailing list, send a message to jfw-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line. Archives located at: //www.freelists.org/archives/jfw If you have any concerns about the list, post received from the list, or the way the list is being run, do not post them to the list. Rather contact the list owner at jfw-admins@xxxxxxxxxxxxxx