int <span>&#45;&gt;</span> <span><span class="type-var">'a</span> option</span> * bool)</span> <span>&#45;&gt;</span> <span>int list</span> <span>&#45;&gt;</span> <span><span>(<span><span class="type-var">'a</span> option</span> * bool)</span> list</span></code></dt><dt class="spec value" id="val-mk_range"><a href="#val-mk_range" class="anchor"></a><code><span class="keyword">val</span> mk_range : <span>?&#8288;accel:int</span> <span>&#45;&gt;</span> int <span>&#45;&gt;</span> int <span>&#45;&gt;</span> <sp