[TW5] Tiddlymap: Is there a way to group nodes into a group?

[Tom Bardout]

Hi,
First time posting here so let me know if this post should be elsewhere.
My aim is to make an interactive wiki that uses the liveview to jump from one topic to another related topic. I'd like to represent all sorts of things related to that topic. This means a lot of nodes all mixed up. For that reason, I'd like to know if there is any way to represent a group like shown below, encapsulating nodes instead of as is shown above. I wish to be able to have ony the relevant nodes show although the categories remain the same throughout the map. Since the system limitations don't allow multiple nodes with the same name, I was hoping there would be a sort of "tag group" that doesn't need a node but automatically groups nodes with the same tag in liveview. Do you know of any other way to acheive something similar?