You can search for identifiers within the package.
in-package search v0.2.0
vif
vif.core
Vif_core.Headers
type t = (string * string) list
val mem : (string * 'a) list -> string -> bool
val add_unless_exists : (string * 'a) list -> string -> 'a -> (string * 'a) list
val get : (string * string) list -> string -> string option
val rem : (string * 'a) list -> string -> (string * 'a) list
val pp : (string * string) list Fmt.t