.. _glossary: Glossary ======== .. glossary:: Amazon A provider of metadata for releases. You need an API key to use this service. imdb A provider of metadata for movie releases. This information is obtained via scraping. tmdb A provider of metadata for movie releases. A shared API key is used for this service. nfo A text file containing information about a release. par A parity file for completing usenet downloads which contain missing parts. rotten tomatoes A provider of metadata for movie releases. You need an API key to use this service. NZB An NZB is an XML-based file format for retrieving posts from NNTP (Usenet) servers. For more information about NZB files, see `NZB `_. regex Short for "regular expression", which provides a concise and flexible means for matching and extracting strings of text. "Regexs" are a central concept in Newznab as they provide the foundation for matching and grouping releases. More information can be found `REGEX `_. TvRage A provider of metadata for releases. The website is www.tvrage.com.