The Complimentary Close: It is a humble way of ending a letter. It is written in accordance with the salutation. The most generally used complimentary close are Yours faithfully, Yours sincerely, and Thanks & Regards. Signature and Writer’s Identification: It includes signature, name, and designation of the sender. It can also include other details like contact number, address etc. The signature is handwritten just above the name of the sender. Enclosures: Enclosures show the documents attached to the letter. The documents can be anything like cheque, draft, bills, receipts, invoices etc. It is listed one by one. Copy Circulation: It is needed when the copies of the letter are sent to other persons. It is denoted as C.C. PostScript: The sender can mention it when he wants to add something other than the message in the body of the letter. It is written as P.S.
For instance, in a typical job application, the problem is that the company or organization needs a position filled, and more importantly they need someone who can do the job well and help the organization achieve its mission (which may be more profits, or it may be to save children in Darfur or to end global warming or to cure cancer). You arouse their interest by telling them that you’re the right person for the position and by promising to help them achieve their mission.