'Query or modify the options of the specified pane.
pane is either an integer index or the name of a managed subwindow.
If kw is not given, returns a dict of the pane option values. If
option is specified then the value for that option is returned.
Otherwise, sets the options to the corresponding values.'

def pane(self, pane, option=None, **kw):

    if (option is not None):
        kw[option] = None
    return _val_or_dict(self.tk, kw, self._w, 'pane', pane)
