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Definition: DESQview


An earlier multitasking, windowing environment for DOS from Quarterdeck. In 1985, DESQview was the first serious multitasking program for the DOS PC. For 386 CPUs, DESQview relied on the included QEMM memory manager, also from Quarterdeck, that supported EMS and extended memory to allow multiple DOS programs to run concurrently. See EMS and extended memory.