ly referenced by non-extern code.">@:directlyUsed</span><span class="label label-meta label-meta-flatEnum" title="Internally used to mark an enum as being flat, i.e. having no function constructors.">@:flatEnum</span></div><div class="body"><div class="doc doc-main"><p></p></div><h3 class="section">Values</h3><div class="fields"><div class="field"><h3><code><a name="Subject" href="#Subject"><span class="identifier">Subject</span></a></code></h3><div class="doc"><p></p></div></div><div class="field"><h3><cod