In Listing 24, the procedure proc is coded to return an OUT parameter value, which is denoted by the parameter marker (?), and was not coded to accept an input value.

在清单24中，过程被编码为返回一个OUT参数值，使用参数标记(？)表示，并且不能接受输入值。

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A group of SAS procedure statements is called a proc step.

SAS程序语句组被称为进程内的一步。

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