an>  <span class="va">zargs</span>,</span>
<span>  length <span class="op">=</span> <span class="fl">0.1</span>,</span>
<span>  eps <span class="op">=</span> <span class="fl">0.04</span>,</span>
<span>  code <span class="op">=</span> <span class="fl">2</span>,</span>
<span>  xpd <span class="op">=</span> <span class="cn">NA</span>,</span>
<span>  add <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  group... <span class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  plot...