> <span class='kw'>NULL</span>,
  <span class='kw'>count</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>proportional</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>,
  <span class='kw'>na.rm</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>,
  <span class='kw'>show_midpoint</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>,
  <span class='kw'>vertical_lines</span> <span class='kw'>=</span> <span class='fl'>FALSE</span>,
  <span class=