Timedesc_sexp.Spanval to_sexp : Timedesc.Span.t -> Sexplib.Sexp.tval to_sexp_string : Timedesc.Span.t -> stringval of_sexp : Sexplib.Sexp.t -> (Timedesc.Span.t, string) Stdlib.resultval of_sexp_string : string -> (Timedesc.Span.t, string) Stdlib.resultval pp_sexp : Stdlib.Format.formatter -> Timedesc.Span.t -> unit