You can search for identifiers within the package.
in-package search v0.2.0
devkit.core
Persist.Marshal
module V : Value
type t = V.value
val to_channel : out_channel -> ?flags:??? -> t -> unit
val from_channel : in_channel -> t
val to_string : ?flags:??? -> t -> string
val from_string_ext : string list -> string -> t
val from_string : string -> t
val to_file_exn : string -> ?mode:??? -> ?flags:??? -> t -> unit
val from_file : string -> t