1. NOTE: This material is intended as only an example which you may use in developing your own form. Sample forms and checklists for attorneys.It's easy to get started with these templated resources. 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. Enclosed are the materials you gave me during our office meeting. We have kept no copies. 13. Enclosures. An enclosure can prevent a letter from becoming too detailed. Add an enclosure notation after your signature at the end of the letter, and abbreviate it with "Enc." or "Encl. Use an enclosure note whenever you enclose something. Type Enclosure(s) or Enc(s).