;&nbsp;&nbsp;&nbsp;<span class="keyword">end</span><br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;insert&nbsp;:&nbsp;unit&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Pretty</span>.doc&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;<span class="constructor">Pretty</span>.doc<br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;dprintf&nbsp;:&nbsp;(<span class="keywordsign">'</span>a,&nbsp;unit,&nbsp;<span class="constructor">Pretty</span>.doc,&nbsp;<span class="const