EndNote works with filters, connectors and styles
filters to pull records from databases into EndNote (Medline, PsycInfo, Web of Science, Embase etc),
connectors to search out to sources such as PubMed from within EndNote and
styles to format referencing according to various styles (such as publisher specific styles, as well as Vancouver, Harvard, APA etc).
EndNote is installed with filters connectors and styles, though it may be necessary to get updates from EndNote.
It is possible to customise filters connectors and styles. If you do this the customised files are not stored in the program files (so that they are not lost if EndNote is uninstalled).
Some useful connectors and filters that are not included in the default files are available for download below.