(1) See
Common Criteria and
closed captions.
(2) (
Carbon
Copy) The field in an email header that names additional recipients for the message. The term comes from carbon paper, which before word processing, was commonly used to make paper copies in a typewriter. Carbon paper is a letter-size sheet with ink on one side that is inserted between two sheets of regular paper to make a copy while typing the original. Additional copies were made at the same time by inserting more pairs of carbon and regular paper into the same stack. See
bcc,
fcc and
Carbon Copy.