><span class="keyword">type</span> extra</span><span> = <a href="../Jsonbug_t/index.html#type-extra">Jsonbug_t.extra</a></span><span> = </span><span>{</span></code><ol><li id="type-extra.cost_polynomial" class="def record field anchored"><a href="#type-extra.cost_polynomial" class="anchor"></a><code><span>cost_polynomial : <span>string option</span>;</span></code></li><li id="type-extra.cost_degree" class="def record field anchored"><a href="#type-extra.cost_degree" class="anchor"></a><code><span>cost_degre