In OS/VS2 and MVT(and in MFT with subtasking), a priority specification associated with every task in a multitask operation, representing the highest dispatching priority that the task may assign to itself or to any of its subtasks.

• 在IBM的操作系统os/VS2和MVT（以及具有子任务的MFT）中，与多任务运行中的每一个任务相关联的优先级说明，它表示了该任务可以分配给自身或其任何子任务的最高调度优先数。