As a guide to DOS 3.3 for the Apple II, All About DOS contains many useful programs and in-depth topics. This new Enhanced Edition, encompassing over 560 pages, is improved with a new design, art, glossary, and technical appendices. It includes a wide variety of references and how-to's, making it a great reference for Apple II programmers. Highlights Include: - "How DOS Works" - RWTS, Internals, Diskettes. - "The Directory" - Sectors, Catalog Edit, Wildcards. - "File Handling" - Sequential to Random files, EXEC - "Speeding Up DOS" - Fast Boot, Loaders for Text, BASIC, Binary. - "Repairing Bugs" - Sequential files, Sector display, Stack. - "DOS Modifications" - Customizing, Using available holes in DOS. - "'R' Files: Relocatable Object Code" - Create code with the Toolkit assembler. - "Utilities" - Automate DOS patches, Disk Error Checking - "Memory Management" - Moving DOS to the Language Card. - "Other Operating Systems" - DOS 4.1, Pascal, CP/M, TRS-80, Atari.