User blog comment:SuperSpruce/The T Array Function Part 5: Arbitrary Comma T Function (ACT)/@comment-39585023-20190630141242

I came here to better understand how recursions can go way up the FGH, but I'm afraid I have so far not been able to undersatnd how this works. I don't understand how all of the symbols are defined and I don't understand  the M definitions and how they relate to what precedes them. Perhaps this notation is just always going to be over my head, but it would be nice to have more detailed explanations and examples that illustrate the use of each symbol. Thanks!