ith them. This is most useful for helper functions
that define both data and aesthetics and shouldn't inherit behaviour from
the default plot specification, e.g. <code><a href='https://ggplot2.tidyverse.org/reference/borders.html'>borders()</a></code>.</p></td>
    </tr>
    <tr>
      <th>origin</th>
      <td><p>Origin of the horizon plot. It can either be a string, namely
<code>"midpoint"</code> (the default), <code>"median"</code>,
<code>"mean"</code>, <code>"min"</code> or <code>"quantiles"</code>, or 