In TYPO3 Fluid, how to pass additional arguments to a partial when {_all} is used
<p>Fluid Styled Content uses the <code>f:render</code> Viewhelper as such:</p>

<pre><code>&lt;f:render partial="Header" arguments="{_all}" /&gt;
</code></pre>

<p>I'd like to pass another info to the partial, like </p>

<pre><code>&lt;f:render partial="Header" arguments="{_all, settings : doThis}" /&gt;
</code></pre>

<p>But it seems to me that's the wrong way, as it throws an error. </p>

<p>I also tried accessing <code>settings.doThis</code> with <code>f:alias</code>, but no luck (or rather, skill) either.</p>

<p>How's that done correctly?</p>