When size, weight, or other factors prevent sending an enclosure with a letter, send it separately and type "(sep cover)" after the enclosure's description. The document discusses enclosures in cover letters.In this article, we explain what an enclosure is and how to cite one, and we provide an example of an enclosure in a business letter. Home and Community Support Services (HCSS) Letter. The Letter is also available as a Portable Document Format (PDF). BEE COLONY : All bees in a hive, including queens, workers, or drones.