Transfer I/O statements include READ, WRITE, REWRITE, ACCEPT, TYPE,
  and PRINT.  Auxiliary I/O statements include OPEN, CLOSE, INQUIRE,
  REWIND, BACKSPACE, ENDFILE, DELETE, and UNLOCK.

  Transfer I/O statements may be formatted (F), unformatted (U),
  list-directed (L-D), or namelist (N) as follows:

     ACCEPT     Sequential -- F, L-D, N
     DELETE     Relative -- U
                Indexed -- U
     PRINT      Sequential -- F, L-D, N
     READ       Sequential -- F, U, L-D, N
                Direct Access -- F, U
                Internal -- F, L-D
                Indexed -- F, U
     REWRITE    Relative -- F, U
                Sequential -- F
                Indexed -- F, U
     TYPE       Sequential -- F, L-D, N
     WRITE      Sequential -- F, U, L-D, N
                Direct Access -- F, U
                Internal -- F, L-D
                Indexed -- F, U