I didn’t know about these, and it looks like I won’t use them in the near future (learning/playing with TADS3 these days).
However, the request was that the interpretor handle it - not the author…
Well… ADRIFT 4 does that. But in practice it doesn’t work very well as people can so easily create layouts that aren’t logically structured, and so the automapper can end up getting confused. Giving control to the author is in my opinion, a much better strategy.