In addition, it may also have a signature line, reference initials, an attachment notation, and a courtesy copy notation. Good memos begin with the most important ideas, are clearly and logically organized, and are concisely written. In printed memo forms, headings do not have colons.
Subject lines are as specific as possible, leaving no uncertainty regarding the purpose of the memo.
The heading may also contain a reference line or block. Body Paragraphs are single-spaced with a double space between them. Either a block or indented format is employed. Headings, lists, and other emphasis techniques are useful, especially in long memos. Whether or not indentions are used in the body of the memo depends upon the style preference of the organization.