You can search for identifiers within the package.
in-package search v0.2.0
type bigstring = (char, Bigarray.int8_unsigned_elt, Bigarray.c_layout) Bigarray.Array1.t
val equal : bigstring -> bigstring -> bool
val compare_be : bigstring -> bigstring -> int
val compare_be_with_len : len:int -> bigstring -> bigstring -> int
val compare_le : bigstring -> bigstring -> int
val compare_le_with_len : len:int -> bigstring -> bigstring -> int