h samples separated.
    The major limitation of the scanline-oriented interface, other
    than the need to first identify an existing file as having a
    suitable organization, is that random access to individual
    scanlines can only be provided when data is not stored in a
    compressed format, or when the number of rows in a strip
    of image data is set to one (<tt>RowsPerStrip</tt> is one).
  </p>
  <p>
    Two routines are provided for scanline-based i/o:
    <tt>TIFFReadScanline</tt>
    and
  