="../../argument-1-Core/index.html#type-t">Core.t</a></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-dr"><a href="#val-dr" class="anchor"></a><code><span><span class="keyword">val</span> dr : 
  <span><a href="../../argument-1-Core/index.html#type-t">Core.t</a> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../../argument-1-Core/index.html#type-t">Core.t</a> <span class="arrow">&#45;&gt;</span></span>
  <span><span>(<span><a href="../../argument-1-Core