o  Each VARIANT begins on the same byte in the  record,  subject  to
      individual  alignment options.  The length of the longest VARIANT
      in the collection determines the overall length of  the  VARIANTS
      field description.

   o  Be sure that the VARIANTS collection you define conforms  to  the
      requirements  of  the  language  or  language processor that will
      access the record definition.

   o  VAX DATATRIEVE requires each VARIANT to contain a STRUCTURE field
      description statement at the top of the VARIANT.