What does cc stand for on a fax sheet?

CC stands for Carbon Copy which is a term that originated pre-computers where copies of documents were made by typing on multiple sheets of paper at one time with carbon paper inbetween. The term, in a fax as well as any other communication, means to send a copy to someone else. For example if a communication is: To: Joe Bloggs cc: Fred Blogs Then this is being sent to Joe but a copy is also being sent to Fred