When the Include Linked Full Text Journals when using the Full Text Limiter setting is enabled in a profile's Basic Settings, you can select the Full Text limiter and receive Linked Full Text (via SmartLinks+), along with the full text results on the Result List.
When this limiter is selected, it is limiting results to a series of collections. Each collection is made up of all of the full text titles in a subscribed database and configured using each title's expected coverage. Whenever you conduct a search using this limiter, all of these collections are searched; if the title is found in one of the collections, it is matched against the date range logged for that title. The title is then verified to see if the full text is available for that article. If full text is not available, the title is displayed on the Result List without a link to full text.
Also included when using this limiter are CustomLinks that are set as type "Full Text" or "Library Catalog" and have collections set as filters within EBSCOadmin. Customlinks can be a source of external Full Text so they are also displayed when the Include Linked Full Text Journals when using the Full Text Limiter setting is enabled.