l: "class Arc" -->
<p>Arc is consists of a set of (two or more) points.
Each point has two coordinates x and y.
It is also called polyline.</p>
<dl>
<dt><a name="label-62" id="label-62"><code>Arc::new <var>point</var>, <var>point</var>, ...</code></a></dt><!-- RDLabel: "Arc::new point, point, ..." -->
<dd>
Constructs a single arc.
<var>point</var> is array of numerals, or <a href="#label-51">class Point</a>.</dd>
<dt><a name="label-63" id="label-63"><code>Arc::new [<var>point</var>, <var>point</var>, ...], 