This document provides information about formal letters, including their characteristics, focus, format, and steps for writing one. A formal letter is addressed to someone you don't know personally, such as for work or business matters. It should be concise and focused on a specific purpose or topic without being overly long or informal. The key components of a formal letter include the sender and recipient addresses, date, salutation, subject, body, complimentary close, signature, and sometimes an enclosure. The document also includes a sample formal letter as an example.