History: System 6 was a version of Mac OS, the operating system of the Apple Macintosh computer, which was used in the late 1980s prior to the introduction of System 7. It is still widely considered to be the best system software version for the Macintoshes compatible with it. Cooperative multitasking made its Macintosh debut in March 1985 with a program called Switcher, which allowed the user to launch multiple applications and switch between them. However, many programs and features did not function correctly with Switcher, and it did not come with the operating system, so it had to be acquired from Apple separately. System 6 featured a much more seamless approach called MultiFinder. MultiFinder originally debuted with System 5 (System file 4.2 / Finder 6.0). Multitasking under System 6 was optional — startup could be set to Finder or MultiFinder. If MultiFinder were selected, the Finder and its functions continued to run when an application was launched. The MultiFinder environment allowed users to see past the windows of running applications to view Finder icons such as the Trash, or the windows of other applications running in the background.
History Source: Wikipedia
History Source Address: http://en.wikipedia.org/wiki/System_6
