a> â€“ <a href="../../index.html">infer</a> &#x00BB; <a href="../index.html">Biabduction__Prop</a> &#x00BB; CategorizePreconditions</nav><h1>Module <code>Biabduction__Prop.CategorizePreconditions</code></h1></header><dl><dt class="spec type" id="type-pre_category"><a href="#type-pre_category" class="anchor"></a><code><span class="keyword">type</span> pre_category</code><code> = </code><table class="variant"><tr id="type-pre_category.NoPres" class="anchored"><td class="def constructor"><a href="#type-pr