We use cookies to understand how the site is used and to improve it. You can accept them, or carry on with them switched off.
The searchable store built from downloaded headers, mapping subject lines to the article numbers and Message-IDs that make up each posting. Indexers keep one server-side and share it with every user; desktop newsreaders build a private copy on disk. Either way the index is what turns a raw group of millions of articles into a list of named files that can be searched.
Browse all terms in NZB Files & Indexing, or see the full Usenet glossary.