ocr: bandwidtn The transmission capacity (in kilobytes) of the communication lines that transport the Internet's electronic information. (See byte, kilobyte.) Baud The number of times a communication line changes its level per second while transmitting data. BCC-Blind Courtesy Copy Acopy of an E-Mail message, sent to an additional recipient without the knowledge of the addressed recipient. (See CC, E-Mail.) Binary file A1 file that holds information in a way that a computer can read and understand. If you try to open such a file using a word- processing program, you'll see meaningless signs. (See A ...