d the last ends
at <code>arcEnd</code>. The curves follow a path in a direction determined by
<code>clockwise</code> and <code>largeArc</code> in such a way that the sweep angle
is always less than 360 degrees.</p>
<p>A simple line is appended if either either radii are zero or the last
point in the path is <code>arcEnd</code>. The radii are scaled to fit the last path
point if both are greater than zero but too small to describe an arc.</p>
    </section>
    
    <section class="summary source-code" id="s