/sys$common/syshlp/helplib.hlb FORTRAN, Statements, OPEN, ACCESS  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  ACCESS = acc

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

  'DIRECT'       Access by record number
  'SEQUENTIAL'   Access sequentially (*DEFAULT*)
  'KEYED'        Access by a specified key
  'APPEND'       Access sequentially, after the last record
                 of the file