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<h1>OpenLink Virtuoso Universal Server: Documentation - before-render</h1>
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<h2>before-render</h2>
<div class="refpurpose">Container for code that should be executed before rendering.</div>
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<span class="funcdef">
<<a href="vc_before_render.html">
<span class="function">before-render</span>
</a>>(EventHandler)</<a href="vc_before_render.html">
<span class="function">before-render</span>
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<div class="refsect1title">Description</div>
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The code contained in this element is executed on the descending edge of recursion when traversing the vspx control tree before rendering.
This is expected to have side effects on vspx controls only, not to return anything or emit any output.
Any return value from the code is ignored.
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