IBM DOS/VS COBOL and ACUCOBOL-GT ignore the following clause in a file description entry statement:
VALUE OF  value-pair-1  {value-pair-2} ... 
            	 Each value-pair is of the form
data-name-1 IS  {data-name-2 }
                {literal-1   } 
            	 You may put a VALUE OF clause into a file description entry, but only when the compiler is in the IBM DOS/VS compatibility mode.