<p>Allows the modification of various properties for template extensions before they are rendered.</p>

<p>Callback signature:</p>
<blockquote><code><em>\XF\Template\Templater</em> $templater, $type, $template, $name, <em>array</em> &amp;$params</code></blockquote>

<p>Arguments:</p>
<ol>
	<li><code><em>\XF\Template\Templater</em> $templater</code> - Templater object.</li>
	<li><code>$type</code> - Template type.</li>
	<li><code>$template</code> - Template name.</li>
	<li><code>$name</code> - Extension name. Note that if the extension is within a macro, this name will be <code>macro_id:extension_id</code>.</li>
	<li><code><em>array</em> &amp;$params</code> - Array of parameters available to this extension.</li>
</ol>

<p><b>Event hint:</b> A string representing the template type, template name and extension name, e.g. <code>public:template_name:name</code>. Note that the name value takes the same format as the name argument.</p>