This is done by help of Aida/Web on Squeak 3.9. This image has Unicode patch installed but it would probably work the same on plan 3.9 too.
It did already in 3.8 as tested and demonstrated in the comments of the following blog post. The comments were written in a 3.8 image, but nowadays this applications runs on 3.9:
http://www.lukas-renggli.ch/blog/studenckifestwal
Lukas