n><span>(<span class="type-var">'stdin</span>, <span class="type-var">'stdout</span>, <span class="type-var">'stderr</span>)</span> <a href="../Core/Cmd/index.html#type-t">Core.Cmd.t</a></span> <span class="arrow">&#45;&gt;</span></span>
  <span><span class="label">f</span>:<span>(<span><span><span>(<span class="type-var">'stdin</span>, <span class="type-var">'stdout</span>, <span class="type-var">'stderr</span>)</span> <a href="../Core/index.html#type-t">Core.t</a></span> <span class="arrow">&#45;&gt;</spa