User blog comment:Simply Beautiful Art/A hierarchy of Greatly Mahlo OCFs/@comment-35392788-20190829125526

So, would   Ξ ( 0 , … , 1 , 0 ; 0 )        be a sort of "greatly Mahlo" analogue of the greatly Mahlo ?

More formally, sort of replacing "closed under the Mahlo operation" with "closed under the greatly Mahlo operation", whatever that means ?