Hi all,<br><br>In this definition from the Parsec library:<br><br><pre><span class="hs-definition">parse</span> <span class="hs-keyglyph">::</span> <span class="hs-layout">(</span><span class="hs-conid">Stream</span> <span class="hs-varid">s</span> <span class="hs-conid">Identity</span> <span class="hs-varid">t</span><span class="hs-layout">)</span>
<a name="line-571"></a>      <span class="hs-keyglyph">=&gt;</span> <span class="hs-conid">Parsec</span> <span class="hs-varid">s</span> <span class="hs-conid">()</span> <span class="hs-varid">a</span> <span class="hs-keyglyph">-&gt;</span> <span class="hs-conid">SourceName</span> <span class="hs-keyglyph">-&gt;</span> <span class="hs-varid">s</span> <span class="hs-keyglyph">-&gt;</span> <span class="hs-conid">Either</span> <span class="hs-conid">ParseError</span> <span class="hs-varid">a</span>
<a name="line-572"></a><span class="hs-definition">parse</span> <span class="hs-varid">p</span> <span class="hs-keyglyph">=</span> <span class="hs-varid">runP</span> <span class="hs-varid">p</span> <span class="hs-conid">()<br>
<br></span></pre>what&#39;s the significance of `Identity t&#39;?<br>(`t&#39; isn&#39;t used anywhere.)<br><br>Thanks,<br>-db<br><br>