You can search for identifiers within the package.
in-package search v0.2.0
testo-util
Testo_util.Tag_query
type t = Tag.query =
| Has_tag of Tag.t
| All
| None
| Not of t
| And of t * t
| Or of t * t
val parse : string -> (t, string) result
val match_ : Tag.t list -> t -> bool
val show : t -> string
val pp : Format.formatter -> t -> unit