Letter format is an agreed-upon set of ways to present the parts of a letter. The quickest way to find out what they are and how they fit on the page is to study Figure 19.1. That figure presents the parts in block format, which arranges all the items at the left margin. Using block format is an easy way to present yourself as a credible professional.

Letters represent you or your company in professional, often legal and emotional, situations. The key to all types of letters is to treat the reader appropriately. "Appropriately" means to use the "you" attitude—speak to readers in nonjargony, understandable, nonconfrontational words. Write several short paragraphs rather than fewer long ones. Treat readers as you would want yourself or people close to you treated.