SETC; DOUBLE; DC?

[Paul Gilmartin]

Which of these (or other) is supposed to work?

         START
         GBLC  &A,&B,&C
&A       SETC  'O''Day'
&B       SETC  (DOUBLE &A)
&C       SETC  DOUBLE(&A)
         DC    C'&B'
         DC    C'&C'
         END

Thanks,
gil