ns</th>
      <td><p>For a numeric y variable, a string specifying a transformation for the y scale, such as "log10" or "sqrt". Defaults to "identity".</p></td>
    </tr>
    <tr>
      <th>y_zero</th>
      <td><p>For a numeric y variable, TRUE or FALSE of whether the minimum of the y scale is zero. Defaults to TRUE.</p></td>
    </tr>
    <tr>
      <th>y_zero_line</th>
      <td><p>For a numeric y variable, TRUE or FALSE whether to add a zero reference line to the y scale. Defaults to TRUE if there are p