me" nowrap><a href="#clear">clear ()</a></td>
	<td class="summary">clear.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#level">level (value)</a></td>
	<td class="summary">set level (color/brightness).</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#line_width">line_width (w)</a></td>
	<td class="summary">set line width.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#line_cap">line_cap (style)</a></td>
	<td class="summary">set line cap style.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a hr