 <span class="op">=</span> <span class="nam">bottom</span> <span class="key">and</span> <span class="nam">left</span>  <span class="com"># bottom-left</span>&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t71" href="#t71">71</a></span><span class="t">&nbsp;</span><span class="r"></span></p>
    <p class="pln"><span class="n"><a id="t72" href="#t72">72</a></span><span class="t">        <span class="com"># If corner_radius=0, arcs become straight lines.</span>&nbsp;</span><s