f="Url/index.html">Url</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><dl><dt class="spec type" id="type-res"><a href="#type-res" class="anchor"></a><code><span class="keyword">type</span> <span>'a res</span></code><code> = <span><span>(<span class="type-var">'a</span>, <span>[ <span>`Msg of string</span> ]</span>)</span> Stdlib.result</span></code></dt><dt class="spec type" id="type-conf"><a href="#type-conf" class="anchor"></a><code><span class="keyword">type</spa