./index.html">infer</a> &#x00BB; Checkers__ImpurityDomain</nav><h1>Module <code>Checkers__ImpurityDomain</code></h1></header><dl><dt class="spec type" id="type-trace"><a href="#type-trace" class="anchor"></a><code><span class="keyword">type</span> trace</code><code> = </code><table class="variant"><tr id="type-trace.WrittenTo" class="anchored"><td class="def constructor"><a href="#type-trace.WrittenTo" class="anchor"></a><code>| </code><code><span class="constructor">WrittenTo</span> <span class="keyword">o