def abortArgsNeeded(term, index, argsNeeded):
    """Issues the error message when an operator is provided with an insufficient
    number of arguments."""
    print('rpn:  error in arg ' + format(index) + ":  operator '" + term +
        "' requires " + format(argsNeeded) + ' argument', end='')
    print('s' if argsNeeded > 1 else '')
