o  Each language that requires a picture  string  will  construct  a
      default  picture  string  if you do not provide one.  The default
      picture string provides a concise, efficient description  of  the
      field.   You  should  use  the  default  picture  string whenever
      possible and avoid facility-specific PICTURE clauses.

   o  The CDDL compiler does not check picture strings  for  conformity
      with  the DATATYPE clause.  In most cases, therefore, the default
      picture string is probably the best option.

   o  You can use the EDIT_STRING field attribute clause to provide  an
      edited picture string for VAX DATATRIEVE.