NUMBER:  258

  ERROR CODE:  F

  MESSAGE TEXT:  direct-access I/O to unit open for keyed access

  EXPLANATION:  The OPEN statement for this unit number specified
  keyed access and the I/O statement specifies direct access.  Check
  the OPEN statement and make sure the I/O statement uses the correct
  unit number and type of access.  (For more information on
  statements, see the HP Fortran for OpenVMS Language Reference
  Manual.)