Our subcluster documentation starts with:
> A subcluster is a group of agents serving a specific purpose within the ThinLinc cluster. The dimension for grouping can be chosen at will and could for example be; location, project, application etc.
It's easy to misunderstand this and miss that ThinLinc always requires subcluster configuration, even with only one server machine. I think this could be clarified easily.
Documentation has been clarified.
I think the new text might have a bit too strong focus on a single agent (as opposed to a single subcluster), but looks decent enough.