module Make: functor (M : Make_arg) -> S  with type t = Int63.t
Flags.Make builds a new flags module.  If there is an error in the 
known flags,
      it behaves as per 
on_error.
      We expose type t = int in the result of Flags.Make so that one can easily use
      flag constants as values of the flag type without having to coerce them.  It is
      typical to hide the t = int in another signature S.
 
type t 
include Comparable.S
consistent with subset
val of_int : int -> t
val to_int_exn : t -> int
val empty : t
val (+) : t -> t -> t
val (-) : t -> t -> t
val intersect : t -> t -> t
val complement : t -> t
val is_empty : t -> bool
val do_intersect : t -> t -> bool
val are_disjoint : t -> t -> bool
val t_of_sexp : Sexplib.Sexp.t -> t
val sexp_of_t : t -> Sexplib.Sexp.t
consistent with subset