class="op">=</span> <span class="cn">NULL</span>,</span>
<span>  <span class="va">env_bg</span>,</span>
<span>  <span class="va">cf_level</span>,</span>
<span>  mve <span class="op">=</span> <span class="cn">TRUE</span>,</span>
<span>  proc <span class="op">=</span> <span class="cn">FALSE</span>,</span>
<span>  proc_iter <span class="op">=</span> <span class="fl">100</span>,</span>
<span>  rseed <span class="op">=</span> <span class="cn">TRUE</span></span>
<span><span class="op">)</span></span></code></pre>