 class="anchor"></a><code><span class="keyword">val</span> operator_select_out : string</code></dt><dt class="spec value" id="val-operator_group_in"><a href="#val-operator_group_in" class="anchor"></a><code><span class="keyword">val</span> operator_group_in : string</code></dt><dt class="spec value" id="val-operator_group_out"><a href="#val-operator_group_out" class="anchor"></a><code><span class="keyword">val</span> operator_group_out : string</code></dt><dt class="spec value" id="val-operator_or"><a href=