You can search for identifiers within the package.
in-package search v0.2.0
type t
val of_string_list : string list -> t
val to_string_list : t -> string list
val directory : t -> t
val filename : t -> string
val to_string : t -> string
val of_string : string -> t
val concat : t -> string -> t
val cd : t -> string -> t
val is_root : t -> bool