_.Tools.VarMap.t</a></span> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-spawn_itv"><a href="#val-spawn_itv" class="anchor"></a><code><span class="keyword">val</span> spawn_itv : Apron.Environment.typvar <span>&#45;&gt;</span> Apron.Interval.t <span>&#45;&gt;</span> Mpqf.t</code></dt><dt class="spec value" id="val-spawn_box"><a href="#val-spawn_box" class="anchor"></a><code><span class="keyword">val</span> spawn_box : <a href="index.html#module-A">A</a>.box1 <span>&#45;&gt;</span> <