>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_expand</dt>
<dd><p>A vector of range expansion constants used to add padding to the x scale, as per the ggplot2 expand argument in ggplot2 scales functions.</p></dd>


<dt>x_labels</dt>
<dd><p>A function or named vector to modi