Inside Macintosh is the name of the developer documentation manuals published by Apple Inc., documenting the APIs and machine architecture of the Macintosh computer. The first documentation for the original 1984 Macintosh was available only in the form of photocopied sheets that could be obtained from Apple. In 1985, they were published in the form of a book that was available to the general public. The first version had three volumes, which covered the original Mac 128K, and the Mac 512K ("Big Mac") and Mac XL (Lisa) models. When the Macintosh Plus was released, a fourth volume was added, detailing the changes to the system software introduced with that model. A further "delta" manual, volume 5, was introduced with the Mac II line in 1986. This manual discusses color QuickDraw, as well as