_channel,&nbsp;unit)&nbsp;<span class="constructor">Stdlib</span>.format&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keywordsign">'</span>a<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;sprintf&nbsp;:&nbsp;(<span class="keywordsign">'</span>a,&nbsp;unit,&nbsp;string)&nbsp;<span class="constructor">Stdlib</span>.format&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="keywordsign">'</span>a<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;bprintf&nbsp;:<br>
&nbsp;&n