Typographical errors, commonly referred to as TYPOS, are mistakes made in the typing of a document. These errors can range from simple misspellings to more complex errors such as incorrect punctuation or formatting. TYPOS can be caused by a variety of factors, including human error, mechanical failure, or software glitches. TYPOS can have serious consequences, such as miscommunication or misinterpretation of a document, and can lead to costly mistakes. It is important to proofread documents carefully to ensure that all TYPOS are corrected before they are sent out.