Also kind of makes sense out of the concept of "Desk Accessories" (i.e. the things under the Apple menu in Macintosh System 1 — Lisa OS also had these.) Every Lisa OS "task" (there were no processes in the pre-emptive sense) is either running a program in the context of a document that program manipulates; or is a document-less accessory program, running under some other task.
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Also kind of makes sense out of the concept of "Desk Accessories" (i.e. the things under the Apple menu in Macintosh System 1 — Lisa OS also had these.) Every Lisa OS "task" (there were no processes in the pre-emptive sense) is either running a program in the context of a document that program manipulates; or is a document-less accessory program, running under some other task.