This is "Not yet implemented". It was going to, and we made a few variants. But didn't like the outcome. If you know how you want it to look, you are welcome to create detailed specifications of how you would like it to work and look. This may end up with you getting more close to what you specifically want, and it may also make us finish the project faster.
We got a bit stuck and started with other things instead. But regardless we will get back to this and finish it at some point.