w, so any valid HTML (including Javascript content) can be used. Style classes from CSS files 
  can be referenced, or styles can be defined directly. For example, to add a label the following could be used:
</p>
<pre>
  &lt;span style="background-color:yellow;font-size:25px;font-weight:bold;border:2px solid orange;"&gt;My label&lt;/span&gt;
</pre>
<p>
  This would result in the following: <span style="background-color:yellow;font-size:25px;font-weight:bold;border:2px solid orange;">My label</span>
</p>

<p