同样的，在符号变量的变量地址栏输入地址就可以将符号变量转换为映射变量。符号变量所需的存储空间根据用户空间计算。为这些变量预留的空间大小在CPU硬件配置下的存储器键内配置。非直接变量允许你将分配给LD指令的操作数作为一个指针指向其它数据，而不是作为实际的数据。
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