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Also known as: followup, reply
A reply posted back to the newsgroup rather than mailed privately, carrying the parent's Message-ID in its References header so clients can thread the two together. Convention prefixes the subject with Re:. Follow-ups go to whatever groups the Followup-To header names when one is present, which stops replies to a crossposted article from scattering across every group in the original Newsgroups line.
Browse all terms in Core Usenet Concepts, or see the full Usenet glossary.