You can search for identifiers within the package.
in-package search v0.2.0
type key =
| Up
| Down
| Left
| Right
| Space
| Escape
| Backspace
| Enter
| Key of string
type t =
| KeyDown of key
| Timer of unit Riot.Ref.t
| Frame of Ptime.t
| Custom of Riot.Message.t
val pp : Stdlib.Format.formatter -> t -> unit