I’ve just refreshed the aTbRef section on the application’s syntax for Tinderbox’s XML: see this section.
Other new/refreshed content includes more information about creating notes and agent, deleting notes and agents, and Window saved tabs Gallery pane.
The XML info is fairly niche if it looks complex, it is likely a part of the toolbox you don’t )yet) need so don’t worry. The create/delete was an obvious omission once pointed out†. Many users may be unaware that they can name their tabs, i.e. put a custom label on them. See the last link above for more info on how to do that…
†. I forget whom, but thank you for the nudge!