-spec"><div class="spec type anchored" id="type-io_cat"><a href="#type-io_cat" class="anchor"></a><code><span><span class="keyword">and</span> io_cat</span><span> = </span></code><ol><li id="type-io_cat.In" class="def variant constructor anchored"><a href="#type-io_cat.In" class="anchor"></a><code><span>| </span><span><span class="constructor">In</span></span></code></li><li id="type-io_cat.Out" class="def variant constructor anchored"><a href="#type-io_cat.Out" class="anchor"></a><code><span>| </span><span