Since packages are not supported, the name of the outermost procedure is returned.
PACKAGENAME()
   /* Since Open PL/I does not support Packages, the name of the outermost  */
   /* procedure is aways returned for the PACKAGENAME() built-in.          */
Micro: proc options(main);
    call Focus();
    Focus: proc;
           put skip list (packagename() || ' ' || procedurename() );
    end;
end;
               		will print:
MICRO FOCUS