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Package ingesters and package disseminators are each a type of named plugin (see DSDOC:Plugin Manager), so it is easy to add new packagers specific to the needs of your site. You do not have to supply both an ingester and disseminator for each format; it is perfectly acceptable to just implement one of them.

Most packager plugins call upon DSDOC:Crosswalk Plugins to translate the metadata between DSpace's object model and the package format.

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Crosswalk plugins are named plugins (see DSDOC:Plugin Manager), so it is easy to add new crosswalks. You do not have to supply both an ingester and disseminator for each format; it is perfectly acceptable to just implement one of them.

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