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（作者为本报宁夏分社记者徐元锋）
，更多细节参见纸飞机下载
That is, DOS 5.0 can either link or unlink UMBs from the standard memory chain (in conventional memory). To allocate memory from UMBs, a program must both set an allocation strategy which looks at UMBs and link the UMBs to the pool of available memory.
Did I learn anything in doing this?