ass="summary">draw circle.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#rect">rect (x, y, w, h)</a></td>
	<td class="summary">draw rectangle.</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#curve">curve (x1, y1, x2, y2, x3, y3)</a></td>
	<td class="summary">draw curve (cubic Bézier spline).</td>
	</tr>
	<tr>
	<td class="name" nowrap><a href="#curve_rel">curve_rel (x1, y1, x2, y2, x3, y3)</a></td>
	<td class="summary">draw curve (cubic Bézier spline) relative coordinates.</td>
	</tr>
	<tr>
	<t