To clarify to the user if the resource is public (any user can access) or restricted (a user will need to log in to some kind of authentication protocol) and if the application should provide a web service preview and/or a download function
Entry Guidelines
Only one of two values are allowed: Public or Restricted.
Commentary
This field can be set to “Public”, which allows users to view and download an item, or “Restricted”, which requires a user to log in to an authentication service.