span class="op">=</span> <span class="st">"cartesian2d"</span>,</span>
<span>  <span class="va">...</span></span>
<span><span class="op">)</span></span>
<span></span>
<span><span class="fu">e_area_</span><span class="op">(</span></span>
<span>  <span class="va">e</span>,</span>
<span>  <span class="va">serie</span>,</span>
<span>  bind <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  name <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  legend <span class="op">=</