This memorandum provides Cynthia Blackmore with guidance on writing a memorandum format for her assignment. Memorandums are commonly used in business to concisely summarize information for busy executives. They allow executives to quickly understand lengthy sources. This memorandum explains that memorandums are the primary means of internal communication in companies when important information needs to be distributed. It contrasts memorandums with letters, which are used for external communication. Finally, it advises that the memorandum for Cynthia Blackmore's graduate level course should be 2-3 pages in length and provides additional resources to help with the assignment.