3 include Set.Make (struct type t = int let compare = (-) end)
4 let hash = Hashtbl.hash
7 include FiniteCofinite.Make(Ptset)
9 let tag t = singleton t
10 let pcdata = singleton Tag.pcdata
11 let attribute = singleton Tag.attribute
12 let star = diff any (cup pcdata attribute)
13 let node = neg attribute