ExplicitTrace.Elementinclude IStdlib.PrettyPrintable.PrintableOrderedTypeinclude IStdlib.PrettyPrintable.PrintableType with type t := tval pp : IStdlib.PrettyPrintable.F.formatter -> t -> unitval describe : Stdlib.Format.formatter -> t -> unitPretty printer used for trace construction; pp is used for debug output.