opdown-header" data-toc-skip>Metadata</h6>
    <a class="dropdown-item" href="../articles/metadata.html">Tplyr Metadata</a>
    <a class="dropdown-item" href="../articles/custom-metadata.html">Creating Custom Tplyr Metadata</a>
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    <h6 class="dropdown-header" data-toc-skip>Advanced</h6>
    <a class="dropdown-item" href="../articles/riskdiff.html">Risk Difference</a>
    <a class="dropdown-item" href="../articles/options.html">Tplyr Options</a>
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