This AppleWorks Command Performance book by Charles Rubin is a valuable addition to any vintage computing collection. Published by Microsoft Press and Apple Computer, it provides a comprehensive guide to the use of AppleWorks software. The book is in great shape and would be a fantastic find for anyone interested in vintage computing. The unit quantity is one, and it is a vintage item that has been well-maintained. It is a great choice for anyone who wants to get a glimpse of the past and understand how AppleWorks software was used in the early days of computing.