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The basic procedures outline how to order an opt-in resource when you have 1 order for 1 e-collection. The multi procedures outline how order two options for ordering when you have a single price being paid (ie. it is not broken down by e-collection) for multiple e-collections. Within each of these procedures, there are options to add migrated orders, add local e-collections, and make the e-collections discoverable should your library wish to do these things.
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