VMS Help FORTRAN, Statements, OPEN, ORGANIZATION  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  ORGANIZATION = org

  org  Is a character expression with one of the following
       values:

  'SEQUENTIAL'  Records are stored in the order that
                they are written. Access mode must be
                sequential, append, or direct (fixed-length
                records only). (*DEFAULT FOR NEW FILES*)

  'RELATIVE'    Records are stored in numbered positions.
                Access mode must be direct or sequential.

  'INDEXED'     Records are stored according to the values
                of their keys. Access mode must be indexed
                or sequential.

  The default for an existing file is its current organization.