span><span class="n">are</span><span class="w"> </span><span class="n">automatically</span><span class="w"> </span><span class="n">computed</span>
<span class="n">internally</span><span class="w"> </span><span class="ow">and</span><span class="w"> </span><span class="n">the</span><span class="w"> </span><span class="k">class</span><span class="w"> </span><span class="n">width</span><span class="w"> </span><span class="p">(</span><span class="n">xdel</span><span class="p">)</span><span class="w"> </span><spa