User blog comment:SuperSpruce/The T Array Function Part 5: Arbitrary Comma T Function (ACT)/@comment-39585023-20190630141242/@comment-36984051-20190723162356

Start at part 1 on my googology website (but I forgot the link and because I am typing this on an iPad I can’t access google sites!), and this will give you a step-by-step tutorial of my notation.