sig
val print_list :
(Stdlib.Format.formatter -> unit -> unit) ->
(Stdlib.Format.formatter -> 'a -> unit) ->
Stdlib.Format.formatter -> 'a list -> unit
val comma : Stdlib.Format.formatter -> unit -> unit
val semi : Stdlib.Format.formatter -> unit -> unit
val space : Stdlib.Format.formatter -> unit -> unit
val newline : Stdlib.Format.formatter -> unit -> unit
end