</a></span> <span class="modifier_kind"><span class="modifier"></span> <span class="kind">val</span></span> <span class="symbol"><span class="name">optTitle</span><span class="result">: <span name="scala.Option" class="extype">Option</span>[<span name="scala.Predef.String" class="extype">String</span>]</span></span></li><li class="indented0 " name="provingground.interface.Site.Tut#output" group="Ungrouped" fullComment="no" data-isabs="false" visbl="pub"><a id="output:String"></a> <span class="permalink"><a 