Book slips are documents that are used to record information about books, such as the title, author, publisher, and date of publication. ERRATA is a term used to refer to errors or mistakes in a book, such as TYPOS, incorrect facts, or misprints. TYPOS are mistakes in written text, usually caused by typing errors. Both ERRATA and TYPOS are important to note when dealing with books, as they can affect the accuracy of the information presented.