Query or modify the configuration options of the widget. With no arguments, return a dictionary mapping every available option name to a tuple describing it (its name, X resource name, X resource class, default value and current value). If a single option name is given as a string, return the tuple for just that option. If one or more keyword arguments are given, or a dictionary is passed as cnf, set each named option to the corresponding value; the expression widget[key] = value sets a single option in the same way.