gt;</span> <a href="../../../Csp/index.html#type-bexpr">Csp.bexpr</a></code></dt><dd><p>transforms an abstract element into constraints</p></dd></dl><dl><dt class="spec value" id="val-spawn"><a href="#val-spawn" class="anchor"></a><code><span class="keyword">val</span> spawn : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="../../../Csp/index.html#type-instance">Csp.instance</a></code></dt><dd><p>Random concretization function. useful to do tests, and to reuse the results. values are gener