html" class="external-link">waiver()</a></code>, the default, the name of the scale is taken from the first
mapping used for that aesthetic. If <code>NULL</code>, the legend title will be
omitted.</p></dd>

    <dt><code>breaks</code></dt>
<dd><p>One of:</p><ul><li><p><code>NULL</code> for no breaks</p></li>
<li><p><code><a href="https://ggplot2.tidyverse.org/reference/waiver.html" class="external-link">waiver()</a></code> for the default breaks (the scale limits)</p></li>
<li><p>A character vector o