Header

1. Text found at the top of an electronic document or hard copy.
2. More commonly known as an e-mail header, a header is data contained at the beginning of an electronic message that contains information about the message. Generally, the header is used to identify the type of message, its source and destination, and other information that may be required to decode it and understand the message. The technical specifications on e-mail headers can also be found in RFC821, RFC822, and RFC2045.

• Additional information about how to view an e-mail header can be found on document CH000531.
• See document CH000918 for additional information about understanding an e-mail header.

Also see: Footer, Hard copy, Odd header, Packet, Running header