We now move into good news letters, that is, letters with messages that the reader is likely to be pleased with. The text explores a variety of these letters that might be written in the course of business. The direct order letter opens with the main point, the good news, which is followed by the details of the news, and then closes with some expression that shows goodwill and prompts the reader to take some sort of follow up action.
Many people have trouble closing letters.
They have said what they want to in the letter itself, but they want some sense of graceful closure at the end. Often, unsure that they have expressed this clearly enough, they will close the letter two, three, even four times. Limit yourself to one close to a letter. The book provides several excellent examples on p. 218. Note the discussion of the various types of direct order letters.