Extensions.Boolsval tag : Tag.tval btrue : Ty.tval bfalse : Ty.tval bool : bool -> Ty.tval any : Ty.tval any_t : tval empty_t : tval components : t -> bool listtype printer = int -> Prec.assoc -> Stdlib.Format.formatter -> t -> unitval print : printerval printer_params : printer -> Printer.paramsval printer_params' : Printer.params