如何在宏语言的%if语句中使用in逻辑语句【转载】

    This example turns on the MINOPERATOR system option to make the IN operator available.  The MINDELIMITER= %MACRO statement option to change the delimiter from a space to a comma.  The MLOGIC system option is also turned on to show how the %IF condition is evaluated.    This example turns on the MINOPERATOR syste