You can search for identifiers within the package.
in-package search v0.2.0
type t
type bigarray = (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t
val sock : t -> Unix.file_descr
val read : t -> Bytes.t -> int -> int -> int
val write : t -> Bytes.t -> int -> int -> int
val ba_write : t -> bigarray -> int -> int -> int