o  Unnamed fields are similar to FILLER fields in  COBOL.   You  can
      use  them to format print records or to reserve space in a record
      for future additions.

   o  All fields, except BIT fields, begin on the first byte  following
      the  preceding  field.   BIT  fields begin on the bit immediately
      following the preceding field.   You  can  modify  this  starting
      position with the ALIGNED clause.