p_gen</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></dt><dd></dd></dl><dl><dt class="spec module" id="module-Regexp_spec"><a href="#module-Regexp_spec" class="anchor"></a><code><span class="keyword">module</span> <a href="Regexp_spec/index.html">Regexp_spec</a> : <span class="keyword">sig</span> ... <span class="keyword">end</span></code></dt><dd></dd></dl><dl><dt class="spec module" id="module-Util"><a href="#module-Util" class="anchor"></a><code><span class="keyword">m