794         option_strings,  argument
837         option_strings,  argument
876         option_strings,  argument
899     def __init__(self, option_strings, dest, default=False, required=False, help=None):  argument
911     def __init__(self, option_strings, dest, default=True, required=False, help=None):  argument
925         option_strings,  argument
966         option_strings,  argument
992     def __init__(self, option_strings, dest, default=None, required=False, help=None):  argument
1008     def __init__(self, option_strings, dest=SUPPRESS, default=SUPPRESS, help=None):  argument
1024         self, option_strings, version=None, dest=SUPPRESS, default=SUPPRESS, help=None  argument
1051         self, option_strings, prog, parser_class, dest=SUPPRESS, help=None, metavar=None  argument