You can search for identifiers within the package.
in-package search v0.2.0
type uchar = int
val is_scalar_value : int -> bool
type form = [
| `NFC
| `NFD
| `NFKC
| `NFKD
]
type t
val create : [< form ] -> t
val form : t -> form
val add : t -> [ `Await | `End | `Uchar of uchar ] -> [ `Await | `Uchar of uchar ]
val reset : t -> unit
val copy : t -> t
val unicode_version : string
val ccc : uchar -> int
val decomp : uchar -> int array
val d_uchar : int -> uchar
val d_compatibility : int -> bool
val composite : uchar -> uchar -> uchar option