SYMGLOBL and SYMLOCAL

NOTE: Macro variable created inside the macro do loop is local, but can be changed to global by adding %global var after %do ...

%let c=yes;

%macro test;

%let d=yes;

data _null_;
      if symlocal ('c') then put '**** c is local';
      if symglobl('c') then put '**** c is global';
      if symlocal ('d') then put '**** d is local';
      if symglobl('d') then put '**** d is global';
run;

%mend test;
%test;

**** c is global
**** d is local

NOTE: DATA statement used (Total process time):
real time 0.00 seconds
cpu time 0.00 seconds