		<TD>file offset (should be off_t)</TD>
</TR>

<TR>
<TD>typedef unsigned char* tidata_t;</TD> <TD>internal image data</TD>
</TR>

</TABLE>

<P>
Note that <TT>tstrip_t</TT>, <TT>ttile_t</TT>, and <TT>tsize_t</TT>
are constrained to be
no more than 32-bit quantities by 32-bit fields they are stored
in in the TIFF image.  Likewise <TT>tsample_t</TT> is limited by the 16-bit
field used to store the <TT>SamplesPerPixel</TT> tag.  <TT>tdir_t</TT>
constrains
the maximum number of IFDs that may appear in an image 