="#display_png">display_png (filename, x, y)</a></td>
	<td class="summary">display png</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#load_png">load_png (filename)</a></td>
	<td class="summary">load png into an image buffer</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#create_image">create_image (width, height)</a></td>
	<td class="summary">create an image buffer</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#display_image">display_image (image, x, y)</a></td>
	<td class="summary">display