Office Circular is a type of communication used in the workplace. It is typically a short document that is distributed to all staff members and contains important information. The most common form of Office Circular is a MEMO, which is a four-letter word. Memos are used to communicate information quickly and efficiently, such as changes in policy or procedure, announcements, reminders, and other important information. They are usually written in a formal tone and are often used to ensure that everyone in the office is on the same page.