ywordsign">-&gt;</span>&nbsp;bool&nbsp;=&nbsp;<span class="string">"%sequand"</span><br>
&nbsp;&nbsp;<span class="keyword">external</span>&nbsp;(&nbsp;<span class="keywordsign">||</span>&nbsp;)&nbsp;:&nbsp;bool&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;bool&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;bool&nbsp;=&nbsp;<span class="string">"%sequor"</span><br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;equal&nbsp;:&nbsp;bool&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;bool&nbsp;<span c