You can search for identifiers within the package.
in-package search v0.2.0
module Tree : sig ... end
type t = float Tree.node
type entry = string * float
type entries = entry list
type word = string list * float
type chunk = word list
val dispConds : word list -> unit
val dispCands : chunk list -> unit
val result_of_cand : chunk -> string
val buildEntries : entries -> entries
val buildIndex : entries -> t
val candidates : t -> string -> int -> chunk list