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DSpace exposes collections and communities as sets.

Each community and collection has a corresponding OAI set, discoverable by harvesters via the ListSets verb. The setSpec is the Handle of the collectionbased on the community/collection handle, with the ":" and "/" converted to underscores so that the Handle is underscore to form a legal setSpec, for . The setSpec is prefixed by "com_" or "col_" for communities and collections, respectively (this is a change in set names in DSpace 3.0 / OAI 2.0). For example:

hdlcol_1721.1_1234

Naturally enough, the community/collection name is also the name of the corresponding set.

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