/a><code><span class="keyword">module</span> <span class="keyword">type</span> <a href="module-type-FOLD/index.html">FOLD</a> = <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec module" id="module-Fold_Map"><a href="#module-Fold_Map" class="anchor"></a><code><span class="keyword">module</span> <a href="Fold_Map/index.html">Fold_Map</a> : <span class="keyword">functor</span> (<a href="Fold_Map/argument-1-M/index.html">M</a> : <a href="../Bastet/Interface/index