source_view:GSourceView.source_view ->
mathviewer: MatitaTypes.mathViewer->
urichooser: (UriManager.uri list -> UriManager.uri list) ->
- rootcreator: (containing:string option -> unit) ->
ask_confirmation:
(title:string -> message:string -> [`YES | `NO | `CANCEL]) ->
set_star: (bool -> unit) ->