You can search for identifiers within the package.
in-package search v0.2.0
type ('k1, 'k2, 'd) t
val make : 'a -> 'b
val add : 'a -> 'b
val remove : 'a -> 'b
val find : 'a -> 'b
val length : 'a -> 'b
val clear : 'a -> 'b