简单.
%macro test(a);
%put Test says &a;
%mend;
%let mymacro = test;
%&mymacro(Hello World);
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返回
8239 %macro test(a);
8240 %put Test says &a;
8241 %mend;
8242
8243 %let mymacro = test;
8244
8245 %&mymacro(Hello World);
Test says Hello World
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