Definition of the word copy in

The term "copy in" has its origins in the context of business correspondence and communication. Initially, copies of letters or memos were made by hand through the process of carbon-copying. A sheet of paper coated with a special ink called carbon paper was placed between the original document and the copy stamp. As the writer pressed down with the stamp, ink from the carbon paper transferred onto the new sheet, creating a duplicate. As the use of carbon paper dwindled with the advent of photocopying technology, the phrase "copy in" began to replace "carbon copy" or "cc" in modern business communications. Rather than indicating a physical duplicate, "copy in" now signifies the inclusion of additional recipients in an electronic message or document, directing them to review or be informed about it. It serves as a digital equivalent of the conventional "cc" or "carbon copy" and ensures multiple parties have access to the same information, establishing better collaboration and communication in a teamwork-oriented professional environment.