This can result in the need to launch a program many times in a day. Switching back to these programs activate their retrieval from disk, which is faster than re-launching . The Get Info command on a Power Macintosh will show the size of the program's data space, plus the program code that is loaded into memory. With virtual memory on, the Power Macintosh operating system becomes more flexible in the way that code is loaded and used, therefore maximizing the memory available. A Power Macintosh with less than 16MB must have Virtual Memory or RAM Doubler on, but Virtual Memory or RAM Doubler makes any Power Macintosh more flexible.
Gray areas represent information that is swapped from disk to physical memory and back.
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