t</code>".</p>

<a name='Preview'></a>
<h3>The Preview Image Problem</h3>

<p>Writing the preview image in JPEG files poses many problems of its own.  These
problems stem from the fact that the JPEG standard is inadequate for storing
large preview images due to the 64kB limit on segment size as mentioned above.
(Note that TIFF images don't have this problem since they have a 4GB limit.)
Some manufacturers get around this by appending the preview after the normal end
of the JPEG file (JPEG EOI), but this cau