add ( self,  *runArgs )

__init__ (
        self,
        master=None,
        dirPrompt="Pick a directory",
        startDir=None,
        hiddenDirs=0,
        **kw,
        )

as per OrderedListOption, but accepts additional keywords

dirPrompt specifies prompt to use in directory picker startDir specifies directory to start the picker in hiddenDirs is boolean indicating whether to show hidden dirs