This vintage 1983 ATARI Disk Operating System Reference Manual is a must-have for computer enthusiasts. The spiral-bound manual is in English and covers all aspects of the DOS 3 operating system. Whether you are a collector or a user, this manual is a valuable resource. It is specifically designed for ATARI computers and provides detailed instructions on how to operate the system.The manual is in very good condition, with no tears or marks, and the spiral binding is intact. It is a rare find and a great addition to any collection. Expand your knowledge and improve your ATARI experience with this comprehensive reference manual.