 image buffer</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#display_image_region">display_image_region (image, left, top, width, height, x, y)</a></td>
	<td class="summary">display sub-region image buffer</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#draw_to">draw_to (image, func)</a></td>
	<td class="summary">direct screen drawing within the provide function into the image instead of the screen</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#peek">peek (x, y, w, h)</a></td>
	<td class="s