DATA: RESULT TYPE I,
N1 TYPE I VALUE 5,
N2 TYPE I VALUE 6.
DEFINE OPERATION.
RESULT = &1 &2 &3.
OUTPUT &1 &2 &3 RESULT.
END-OF-DEFINITION.
DEFINE OUTPUT.
WRITE: / 'The result of &1 &2 &3 is', &4.
END-OF-DEFINITION.
OPERATION 4 + 3.
OPERATION 2 ** 7.
OPERATION N2 - N1.

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The produces the following output:
The result of 4 + 3 is 7
The result of 2 ** 7 is 128
The result of N2 - N1 is 1
这是一个定义宏的语句，在DEFINE和END-OF-DEFINITION之间有完整的ABAP语句，用&N作为占位符，在调用的时候把真正的字符传入并取代。