You can search for identifiers within the package.
in-package search v0.2.0
dokeysto
Dokeysto.Utls
type filename = string
val with_in_file : filename -> (in_channel -> 'a) -> 'a
val with_out_file : filename -> (out_channel -> 'a) -> 'a
val save : filename -> 'a -> unit
val restore : filename -> 'a