<dd><p>The size of the outlines of density areas.</p></dd>


<dt>title</dt>
<dd><p>Title string.</p></dd>


<dt>title_wrap</dt>
<dd><p>Number of characters to wrap the title to. Defaults to 75.</p></dd>


<dt>subtitle</dt>
<dd><p>Subtitle string.</p></dd>


<dt>subtitle_wrap</dt>
<dd><p>Number of characters to wrap the subtitle to. Defaults to 75.</p></dd>


<dt>x_breaks_n</dt>
<dd><p>For a numeric x variable, the desired number of intervals on the x scale, as calculated by the pretty algorithm. Defaults to