You can search for identifiers within the package.
in-package search v0.2.0
include Graphv_core_lib.Flags.S
type t = int
val no_flags : int
val has : int -> flag:int -> bool
val or_ : int -> int -> int
val (lor) : int -> int -> int
val remove : int -> flag:int -> int
val optional : t
val required : t
type pattern = private
| Optional
| Required
val to_pattern : t -> pattern