.Itv.t</a></code></dt><dd><p>Return difference of offsets between given array blocks</p></dd></dl><dl><dt class="spec value" id="val-normalize"><a href="#val-normalize" class="anchor"></a><code><span class="keyword">val</span> normalize : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dd><p>Normalize all interval values such as offset and size in it. Thus, if an interval value is invalid, the interval value is replaced with bottom.</p></dd></dl><dl><dt