Unformatted

 Unformatted I/O statements do not contain format specifiers and
 therefore do not translate the data being transferred.

 Unformatted I/O is especially appropriate where the output data
 will subsequently be used as input.  Unformatted I/O saves
 execution time by eliminating the data translation process,
 preserves greater precision in the external data, and usually
 conserves file storage space.

 Unformatted I/O statements do not specify a format (FMT=) in the
 control list (clist).  Other "clist" elements are required
 depending on the type of access.

 Unformatted sequential READ:

   READ (UNIT=u[,IOSTAT=ios][,ERR=err][,END=end]) [iolist]

 Unformatted direct access READ:

   READ (UNIT=u,REC=rec[,IOSTAT=ios][,ERR=err]) [iolist]

 Unformatted indexed READ:

   READ (UNIT=u,KEY=k[,KEYID=n][,IOSTAT=ios][,ERR=err]) [iolist]

 Unformatted sequential WRITE:

   WRITE (UNIT=u,[,IOSTAT=ios][,ERR=err]) [iolist]

 Unformatted direct access WRITE:

   WRITE (UNIT=u,REC=rec[,IOSTAT=ios][,ERR=err]) [iolist]

 Unformatted indexed WRITE:

   WRITE (UNIT=u[,IOSTAT=ios][,ERR=err]) [iolist]