sign">-&gt;</span>&nbsp;int<br>
&nbsp;&nbsp;<span class="keyword">type</span>&nbsp;<span class="keywordsign">'</span>a&nbsp;printer&nbsp;=&nbsp;<span class="constructor">Format</span>.formatter&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keywordsign">'</span>a&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;unit<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;pp&nbsp;:<br>
&nbsp;&nbsp;&nbsp;&nbsp;?sep:string&nbsp;<span class="keywordsign">-&gt;</span><br>
&nbsp;&nbsp;&nbsp;&nbsp;<sp