an><span>(<span class="type-var">'stdin</span>, <a href="#type-pipe">pipe</a>, <span class="type-var">'stderr</span>)</span> <a href="#type-t">t</a></span> <span class="arrow">&#45;&gt;</span></span> <span class="xref-unresolved">Stdlib</span>.in_channel</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-stderr"><a href="#val-stderr" class="anchor"></a><code><span><span class="keyword">val</span> stderr : <span><span><span>(<span class="type-var">'stdin</span>, <span cl