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Also known as: headers, header block
The block of name-value lines at the top of an article, ending at the first blank line. Required fields include From, Subject, Newsgroups, Date, Message-ID, and Path, and servers add or rewrite several of them in transit. A long value may be folded across continuation lines that start with whitespace. Everything needed to route, thread, and index an article lives in this block.
Browse all terms in Core Usenet Concepts, or see the full Usenet glossary.