tatic.typ</span> <span>&#45;&gt;</span> <span><span>(<span class="type-var">'a</span>, <span class="type-var">'t</span>)</span> Ctypes_static.field</span></code></dt><dt class="spec value" id="val-seal"><a href="#val-seal" class="anchor"></a><code><span class="keyword">val</span> seal : a. <span><span class="type-var">'a</span> Ctypes_static.typ</span> <span>&#45;&gt;</span> unit</code></dt></dl><dl><dt class="spec type" id="type-const"><a href="#type-const" class="anchor"></a><code><span class="keyword">t