ref="#module-Additive" class="anchor"></a><code><span class="keyword">module</span> <a href="Additive/index.html">Additive</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec module" id="module-Multiplicative"><a href="#module-Multiplicative" class="anchor"></a><code><span class="keyword">module</span> <a href="Multiplicative/index.html">Multiplicative</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></div><div class="spec