Global symbol table and llocal symbol table

[UPEN]

%let Mv=shoes;
%macro PRODUCT(Mv=bicycles);
%let Mv=clothes;
%mend;
%PRODUCT(Mv=tents)
%put Mv is &Mv;

Why is the value o MV is shoes?? Please explain

[Reeza]

Because you have both global and local variables. 

Since the macro is finished when you request a PUT it uses the global version - which is the first assignment. 

[Ksharp]

Yeah. The local symbol table would be destroied after running the macro.

So you only get the global symbol value.