You can search for identifiers within the package.
in-package search v0.2.0
exception Unknown_op_code
type t =
| OP_REPLY
| OP_UPDATE
| OP_INSERT
| RESERVED
| OP_QUERY
| OP_GET_MORE
| OP_DELETE
| OP_KILL_CURSORS
val to_code : t -> int32
val of_code : int32 -> t