Office missives are documents that are sent from one office to another. They can be used for a variety of purposes, such as communicating important information, making requests, or providing instructions. The term 'office missives' is often used interchangeably with the term 'MEMOS, ' which is a five-letter word that is commonly used to describe these types of documents. MEMOS are typically written in a formal style and are used to convey important information to a wide audience.