User blog comment:Pellucidar12/Attempt at a FGH related notation/@comment-24920136-20170416172922

As it stands it's ill defined but i guess it has an Egg-like feel to it which is why i sorta understand what he was trying to muster up

i believe yth function after a limit ordinal could be interpreted as the nth successor ordinal after a certain limit, placed into the subscript for the standard fgh notation

nth limit ordinal could be interpreted as "nth multiple of w" from examples

I guess the fourth term is a half left-to-the-reader half-defined way of saying a specifies some sort of process and z becomes the recursion on that process, then the fifth element becomes a sort of diagonalizer hierarchy for that process