You can search for identifiers within the package.
in-package search v0.2.0
type _t
Parameter for CKM_EXTRACT_KEY_FROM_KEY (CK_KEY_DERIVATION_STRING_DATA)
CKM_EXTRACT_KEY_FROM_KEY
CK_KEY_DERIVATION_STRING_DATA
type t = _t Ctypes.structure
type u = string
val make : u -> t
val view : t -> u
val t : t Ctypes.typ