Hi Mark,
Firstly: thanks for helping out!
This works! 
I’ve only been able to test the edict you kindly spelled out above as of today.
For what it’s worth, I’ve first implemented it, and then have started to “try” to “read” the edict in order to understand what we’re doing here, checking on aTbRef, to then later on read further on to find that my search was approx equivalent as your textual explanation. I know, this is a lot of words to say just this tiny bit 
I think it will be very interesting to read and learn up on aTbRef > format to learn the powers that lay within..
For now I have a simple question:
How would we extend the edict to also list the $AgentPriority attribute?
Also: How complex would it be to format the output as a table?
As an aside: I find your explanation to be spot on with regards to the/my use of agents: likely too many. That is also one of the reasons that I’d like to extend this (maybe, if sufficiently sensible) with the use of an icon that would e.g. be colored according to $AgentPriority==level 0/1/4/10/20/-1.
Is it correct that @satikusala ‘s Training Video - Searching sets: understanding the .format dot operator treats this subject? Are there any other recommended Training Video’s or Meetup Video’s that treat this subject to learn about it?