e channels, ifUnknown if such format does not exist&nbsp;</div></td></tr><tr>
<td class="Element262" valign="top" width="35%">
<div class="Element263">
IsIndexed: Boolean;&nbsp;</div></td><td class="Element266" valign="top" width="65%">
<div class="Element267">
True if image uses palette&nbsp;</div></td></tr><tr>
<td class="Element262" valign="top" width="35%">
<div class="Element263">
IsSpecial: Boolean;&nbsp;</div></td><td class="Element266" valign="top" width="65%">
<div class="Element267">
True if image