type t =
  | Video of string * string option * bool
  | Raster of string * string option * string option * (int * int) option
  | Vector of string * string option * string option
  | Audio of string
  | Photo of string
  | Chart of string * string * string * string
  | GeoJSON of string
  | Youtube of string
  | Diagram of string
  | CompareRaster of string * string * string * string * (int * int) option
  | Unknown of string list

val find_shortcodes : string -> ((int * int) * t) list
val find_labels : string -> t list
val find_codes : string -> t list
val img_expansion : string list -> t