e-var">'a</span> <a href="index.html#type-arbitrary">arbitrary</a></span> <span>&#45;&gt;</span> <span><span><span class="type-var">'a</span> <a href="index.html#type-t">t</a></span> <a href="index.html#type-arbitrary">arbitrary</a></span></code></dt><dt class="spec value" id="val-make_bound"><a href="#val-make_bound" class="anchor"></a><code><span class="keyword">val</span> make_bound : <span><span class="type-var">'a</span> <a href="index.html#type-arbitrary">arbitrary</a></span> <span>&#45;&gt;</span> <s