lass="label label-meta label-meta-optional" title="Marks the field of a structure as optional.">@:optional</span><span class="label label-optional">optional</span><a href="#fontSize"><span class="identifier">fontSize</span></a>:<span class="type">Null</span>&lt;<span class="type">Int</span>&gt;</code></h3><div class="doc"><p>the size of the font in pixels.</p></div></div><div class="field "><a name="font"></a><h3 class="anchor"><code><span class="label label-meta label-meta-optional" title="Marks the field 