d"><td class="def field"><a href="#type-error_desc.dotty" class="anchor"></a><code>dotty : <span>string option</span>;</code></td></tr></table><code>}</code></dt><dd><p>description field of error messages</p></dd></dl><div><div class="spec include"><div class="doc"><dl><dt class="spec value" id="val-compare_error_desc"><a href="#val-compare_error_desc" class="anchor"></a><code><span class="keyword">val</span> compare_error_desc : <a href="index.html#type-error_desc">error_desc</a> <span>&#45;&gt;</span> <a 