Thanks, Mark. I will have to go away and see if I can understand that.
I think at this point this is taking up too much of your valuable time. I will have to think about what I am trying to achieve at a strategic level, and consider whether the “tactics” are getting me closer to the goal, or just providing a distraction when I should be thinking about other ways of achieving what I want.
I think this may be a case of me trying to use Tinderbox in ways that are beyond my capabilities, and rather than digging myself deeper, it may be best to try something simpler.
But this has been highly educational, though I fear that one of the learning points is that I ought not to try to do this kind of thing! Thank you for all the suggestions and insight.