Multitasking extension for Classic Mac OS / From Wikipedia, the free encyclopedia

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MultiFinder is an extension for the Apple Macintosh's classic Mac OS, introduced on August 11, 1987[1] and included with System Software 5.[2] It adds cooperative multitasking of several applications at once a great improvement over the previous Macintosh systems, which can only run one application at a time. With the advent of System 7, MultiFinder became a standard integrated part of the operating system and remained until the introduction of Mac OS X.