sage_extra"><a href="#val-equal_config_usage_extra" class="anchor"></a><code><span><span class="keyword">val</span> equal_config_usage_extra : <span><a href="#type-config_usage_extra">config_usage_extra</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-config_usage_extra">config_usage_extra</a> <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></div><div class="odoc-spec"><div class="spec type anchored" id="type-extra"><a href="#type-extra" class="anchor"></a><code><span