</td></tr>
<tr class=b>
<td>Type</td>
<td class=c>string</td>
<td>&nbsp;</td></tr>
<tr>
<td>SeeAlso</td>
<td class=c>string</td>
<td>&nbsp;</td></tr>
</table></td></tr></table></blockquote>

<h2><a name='Extensions'>MWG Extensions Struct</a></h2>
<p>This structure may contain any top-level XMP tags, but none have been
pre-defined in ExifTool.  Since no flattened tags have been pre-defined,
RegionExtensions is writable only as a structure (eg.
<code>{xmp-dc:creator=me,rating=5}</code>).  Fields for this stru