mathviewer: MatitaTypes.mathViewer->
urichooser: (UriManager.uri list -> UriManager.uri list) ->
develcreator: (containing:string option -> unit) ->
mathviewer: MatitaTypes.mathViewer->
urichooser: (UriManager.uri list -> UriManager.uri list) ->
develcreator: (containing:string option -> unit) ->