l</span>,
  yvar <span class="op">=</span> <span class="st">"residual"</span>,
  type <span class="op">=</span> <span class="cn">NA</span>,
  smoother <span class="op">=</span> <span class="cn">FALSE</span>,
  scale <span class="op">=</span> <span class="fl">1</span>,
  theme <span class="op">=</span> <span class="st">"bw"</span>,
  axis.text.size <span class="op">=</span> <span class="fl">10</span>,
  title.text.size <span class="op">=</span> <span class="fl">12</span>,
  title.opt <span class="op">=</span