html text - what can we do?

Is there a complete list of supported html for label traits?

Like, does text shadow work, for example?

We don’t have a complete list because “we don’t really know ourselves” – we simply wired them up to the HTML parser built into Java’s Swing library. I believe that it’s HTML 3.2 or something like that (so not cutting edge), but definitely lots of things work. It’s best to just try things out and see how they do! Sorry I don’t have a clearer answer for you!