kw'>y_expand</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>legend_ncol</span> <span class='kw'>=</span> <span class='fl'>3</span>, <span class='kw'>legend_digits</span> <span class='kw'>=</span> <span class='fl'>1</span>,
  <span class='kw'>title</span> <span class='kw'>=</span> <span class='st'>"[Title]"</span>, <span class='kw'>subtitle</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>x_title</span> <span class='kw'>=</span> <span class='st'