What is a short, written statement or message commonly referred to as?

A short, written statement or message is commonly referred to as a memo. Memos are used primarily for internal communication within an organization. They are concise and focused on conveying information, instructions, or updates to employees or team members. The structure of a memo is typically straightforward, including a header that lists the recipient, sender, date, and subject line, followed by a brief message body.

In contrast, a letter is typically more formal and can be used for external communication with individuals or organizations outside the sender's workplace. A report is usually a longer document that provides detailed information or analysis on a specific topic, often intended for broader audiences. A notice usually serves the purpose of notifying individuals about specific events or changes but can often be part of a larger communication strategy, such as postings or bulletins. Thus, the nature and function of a memo best fit the description of a short, written statement or message.